CASE IH D35 Service Manual

Document Overview

Purpose of this Manual

This service manual is designed to provide comprehensive information and step-by-step instructions for the proper maintenance and repair of the CASE IH D35 tractor. It is intended for use by qualified technicians and experienced operators who possess a fundamental understanding of agricultural machinery and mechanical principles. This manual covers a wide range of topics, from routine servicing tasks to complex troubleshooting procedures, ensuring that users can effectively diagnose and resolve any issues that may arise during the tractor's lifespan. By following the guidelines outlined in this manual, users can extend the life of their CASE IH D35, improve its performance, and minimize costly downtime.

This manual is not intended to replace formal training in tractor maintenance and repair. It is a supplement to existing knowledge and experience, providing specific details and procedures relevant to the CASE IH D35. While every effort has been made to ensure the accuracy and completeness of the information presented, CASE IH and the publisher assume no liability for errors or omissions. Users are encouraged to consult with qualified technicians or refer to other relevant resources when necessary. Remember to always prioritize safety and follow all applicable regulations when working on agricultural machinery.

Safety Precautions

Safety is paramount when performing any maintenance or repair work on the CASE IH D35 tractor. Before commencing any task, thoroughly read and understand all safety precautions outlined in this section and throughout the manual. Always wear appropriate personal protective equipment (PPE), including safety glasses, gloves, and hearing protection, to minimize the risk of injury. Ensure that the tractor is parked on a level surface, the engine is switched off, and the parking brake is engaged before starting any work.

Never work under a tractor that is only supported by a jack. Use jack stands or other appropriate support devices to ensure the tractor's stability. Be mindful of pinch points and moving parts, and avoid wearing loose clothing or jewelry that could become entangled. Handle fuels, lubricants, and other chemicals with care, following the manufacturer's instructions for storage, handling, and disposal. Disconnect the battery's negative terminal before working on the electrical system to prevent accidental short circuits and electrical shocks. By adhering to these safety precautions, you can minimize the risk of accidents and injuries during maintenance and repair operations.

General Information

The CASE IH D35 tractor is a versatile and reliable agricultural machine designed for a variety of tasks, from plowing and tilling to mowing and hauling. Understanding the tractor's basic components and their functions is essential for effective maintenance and repair. This section provides an overview of the tractor's key systems, including the engine, transmission, hydraulics, and electrical system. Familiarize yourself with the location of major components and their interrelationships before attempting any repairs.

This manual uses specific terminology to describe various parts and procedures. Refer to the glossary of terms at the end of the manual for clarification of any unfamiliar terms. Always use genuine CASE IH parts whenever possible to ensure optimal performance and reliability. Using aftermarket parts may void the warranty and could potentially damage the tractor. Keep accurate records of all maintenance and repairs performed on the tractor to track its service history and identify potential problems early on. A well-maintained CASE IH D35 tractor will provide years of reliable service.

Tools and Equipment Required

Having the right tools and equipment is crucial for performing maintenance and repairs efficiently and safely. This section provides a comprehensive list of the tools and equipment typically required for working on the CASE IH D35 tractor. This includes a basic set of hand tools, such as wrenches, sockets, screwdrivers, and pliers. You will also need specialized tools, such as torque wrenches, multimeters, and hydraulic pressure gauges, depending on the specific tasks you are undertaking.

In addition to hand tools, you may also need power tools, such as drills, grinders, and impact wrenches. Ensure that all tools are in good working condition and properly maintained. Invest in high-quality tools that are designed for automotive or agricultural use. Using the wrong tools can damage the tractor or cause injury. Keep your tools organized and readily accessible in a tool box or cabinet. Before starting any repair, gather all the necessary tools and equipment to avoid interruptions and delays. With the right tools and a well-organized workspace, you can complete your maintenance and repair tasks with confidence and efficiency.

Engine Service

Engine Specifications

Understanding the engine's specifications is critical for proper maintenance and repair. The CASE IH D35 utilizes a [Insert Specific Engine Model Here] diesel engine. Key specifications include the engine displacement (e.g., 2.5 liters), compression ratio (e.g., 17:1), bore and stroke dimensions (e.g., 100mm x 80mm), and the firing order (e.g., 1-3-4-2). These specifications are crucial when performing tasks such as setting valve clearances, checking compression, and ensuring proper timing. Refer to the engine identification plate, typically located on the engine block, for the exact engine model and serial number. Using the correct specifications ensures accurate diagnosis and prevents potential damage during repairs.

Furthermore, engine specifications include data related to oil pressure, coolant capacity, and fuel injector specifications. Maintaining proper oil pressure is vital for lubricating engine components and preventing wear. The D35's cooling system capacity should be adhered to when filling or topping off the coolant to maintain adequate temperature control and avoid overheating. It's also important to understand the proper fuel injector opening pressure and spray pattern, which affects fuel atomization and combustion efficiency. Deviations from these values can cause starting problems, poor performance, and excessive smoke. Always consult the detailed specification chart for the D35's engine for precise numbers and tolerances.

Troubleshooting Engine Problems

Diagnosing engine problems effectively requires a systematic approach. Start by gathering information about the symptoms, such as difficulty starting, unusual noises, loss of power, excessive smoke, or overheating. Next, perform a visual inspection of the engine, looking for leaks, damaged components, or loose connections. Check fluid levels, including engine oil, coolant, and fuel. Listen carefully to the engine while it is running, noting any unusual sounds such as knocking, ticking, or hissing. A stethoscope can be a useful tool for pinpointing the source of engine noises.

Once you've completed the initial assessment, use a diagnostic approach based on the symptoms. For example, if the engine is difficult to start, check the battery, starter motor, and fuel system. If the engine is overheating, investigate the cooling system, including the radiator, water pump, thermostat, and hoses. Excessive smoke may indicate a problem with the fuel system, air intake, or engine compression. Perform basic tests such as compression testing, leak-down testing, and fuel system pressure testing to further isolate the problem. Always consult the troubleshooting charts in this manual for specific diagnostic procedures related to each symptom.

Do not overlook the basics when troubleshooting. Check that fuel is actually getting to the engine, and that the air filter is not clogged. An often-overlooked element is the condition of the battery and charging system. Low voltage can cause a myriad of performance issues. If electrical checks are not your strongest suit, consider bringing in an experienced technician. Remember to document each step taken during the troubleshooting process, as this can be invaluable in identifying the root cause of the problem, especially if it turns out to be intermittent.

Engine Removal and Installation

Removing and installing the engine requires careful planning and the use of proper tools. Begin by disconnecting the battery and draining all fluids, including engine oil, coolant, and fuel. Disconnect all wiring harnesses, hoses, and linkages attached to the engine, carefully labeling each one to ensure proper reassembly. Remove the hood and any other components that may obstruct access to the engine. Support the engine with an engine hoist or crane, ensuring that the lifting points are properly located and secured. Disconnect the engine mounts and carefully lift the engine out of the tractor frame.

Before installing the new or rebuilt engine, thoroughly inspect the engine compartment and repair any damaged components. Clean the engine mounting surfaces and install new engine mounts. Carefully lower the engine into the tractor frame, aligning the mounting points. Connect the engine mounts and tighten them to the specified torque. Reconnect all wiring harnesses, hoses, and linkages, referring to your labeled notes. Refill all fluids to the proper levels and reconnect the battery. Before starting the engine, prime the oil pump by cranking the engine over without starting it. Finally, start the engine and check for leaks or other problems.

When installing a newly rebuilt or replacement engine, it is highly recommended to follow the manufacturer's break-in procedure. This typically involves running the engine at varying speeds and loads for a set period of time, followed by an oil change. Correct engine break-in ensures proper seating of piston rings and bearing surfaces, maximizing engine life and performance. Always consult the engine manufacturer's recommendations for specific break-in procedures. Failure to follow break-in procedures can result in premature engine wear and reduced performance.

Cylinder Head Service

Servicing the cylinder head is a crucial aspect of engine maintenance. Begin by carefully removing the cylinder head from the engine block after properly disconnecting all related components such as intake and exhaust manifolds, fuel lines, and electrical connections. Thoroughly clean the cylinder head, removing all carbon deposits and gasket residue. Inspect the cylinder head for cracks, warpage, and other damage. Use a straight edge and feeler gauge to check for warpage across the gasket surface. If warpage exceeds the manufacturer's specification, the cylinder head must be resurfaced.

Inspect the valves, valve seats, and valve guides for wear and damage. Grind the valves and valve seats to ensure a proper seal. Replace any worn or damaged valve guides. Check the valve springs for proper tension and replace them if necessary. Assemble the cylinder head, installing new valve stem seals. Adjust the valve clearances to the specified values. Install the cylinder head on the engine block, using a new head gasket. Torque the head bolts in the specified sequence and to the specified torque. After installation, it is essential to recheck valve lash after the first hour of operation.

When installing the cylinder head, ensure the head gasket is correctly positioned. Incorrect placement can block oil passages, leading to engine damage. Torque the cylinder head bolts in multiple passes, following the manufacturer's specified sequence and torque values. This ensures even distribution of clamping force and prevents warpage or leaks. After torquing the head, recheck valve clearances to confirm they are within the specified range. Additionally, consider a coolant system pressure test after head installation to detect any leaks before extensive operation.

Transmission Service

Transmission Specifications

The CASE IH D35 transmission is a critical component of the tractor's drivetrain, responsible for transferring power from the engine to the wheels at various speeds and torque levels. Understanding the transmission's specifications is paramount for proper maintenance and repair. These specifications include information on gear ratios, oil type and capacity, bearing types, and torque settings for various components. Consult the detailed specifications chart included later in this manual for the exact values relevant to your specific D35 model. Deviating from these specifications can lead to reduced performance, premature wear, and even catastrophic failure of the transmission. Proper adherence to these guidelines ensures optimal operation and longevity of this vital system.

Furthermore, knowing the acceptable tolerances for gear lash, bearing preload, and shift fork alignment is crucial for maintaining smooth and efficient operation. These tolerances are meticulously engineered to minimize friction, reduce noise, and prevent excessive wear on internal components. Always use calibrated measuring tools and follow the prescribed procedures when checking and adjusting these parameters. Neglecting these specifications can lead to rough shifting, gear slippage, and increased wear, ultimately impacting the tractor's overall performance and reliability. Accurate documentation of all measurements and adjustments is highly recommended for future reference and troubleshooting.

Troubleshooting Transmission Problems

Diagnosing transmission problems requires a systematic approach and a thorough understanding of the transmission's internal workings. Begin by gathering information about the symptoms, such as the specific gears that are affected, the presence of unusual noises, or the difficulty in shifting. Note the conditions under which the problems occur, such as cold or hot operation, under load or at idle. This information can provide valuable clues about the underlying cause. Always check the transmission oil level and condition before proceeding with more invasive diagnostic procedures. Low oil levels or contaminated oil can often lead to a variety of transmission problems.

Next, perform a visual inspection of the transmission housing, shift linkages, and external components for any signs of damage, leaks, or misalignment. Pay close attention to the shift linkage, ensuring that it is properly adjusted and that all connections are secure. Check for any worn or damaged shift forks, as these can cause difficulty in shifting and gear engagement. If a visual inspection does not reveal the cause of the problem, further diagnostic steps may be necessary, such as checking gear lash, bearing preload, and shift fork alignment. Using a stethoscope can help pinpoint the source of unusual noises within the transmission. Remember safety first, always disconnect the battery before performing any electrical troubleshooting.

Transmission Removal and Installation

Removing and installing the transmission is a complex procedure that requires specialized tools and a thorough understanding of the tractor's construction. Prior to beginning the removal process, ensure that the tractor is properly supported and secured to prevent accidental movement. Disconnect the battery to prevent any electrical shorts or hazards. Drain the transmission oil into a suitable container for proper disposal. Carefully disconnect all linkages, hoses, and electrical connections that are attached to the transmission. Take detailed notes and photographs of the connections to ensure proper reassembly.

With all the necessary connections disconnected, carefully unbolt the transmission from the tractor's chassis. Depending on the model, it may be necessary to remove or reposition other components to gain access to the transmission mounting bolts. Use a suitable hoist or jack to support the transmission during removal. Ensure that the hoist is properly rated for the weight of the transmission. Once the transmission is free from the chassis, carefully lower it to the ground and move it to a clean, well-lit workspace. During installation, always use new gaskets and seals to prevent leaks. Torque all bolts to the specified values to ensure proper clamping force. Reconnect all linkages, hoses, and electrical connections, referring to your notes and photographs for guidance.

Gear Inspection and Replacement

Gears are critical components within the transmission that are responsible for transmitting power and changing the speed and torque output. Careful inspection of the gears is essential during any transmission service to identify signs of wear, damage, or fatigue. Examine the gear teeth for pitting, spalling, cracking, or any other signs of surface distress. Check the gear teeth for excessive wear, which can be identified by a reduction in the tooth profile or a change in the surface finish. Inspect the gear splines for wear or damage, as these splines are responsible for transmitting torque between the gears and shafts. A magnifying glass can be helpful in detecting subtle signs of wear or damage.

If any gear is found to be damaged or worn beyond acceptable limits, it must be replaced. Use only genuine CASE IH replacement gears to ensure proper fit and performance. After installing new gears, it is essential to check the gear lash and adjust it to the specified values. Gear lash is the amount of clearance between the teeth of mating gears. Incorrect gear lash can lead to excessive noise, vibration, and premature wear. Always use specialized tools and follow the prescribed procedures when checking and adjusting gear lash. Be certain the correct shims are installed for each of the gears you are inspecting to ensure proper wear patterns, or excessive damage can occur.

Bearing Inspection and Replacement

Bearings play a crucial role in supporting the rotating shafts and gears within the transmission, minimizing friction and allowing for smooth operation. During transmission service, it is essential to carefully inspect the bearings for any signs of wear, damage, or fatigue. Check the bearing races for pitting, spalling, cracking, or any other signs of surface distress. Inspect the bearing rollers or balls for wear, damage, or discoloration. Rotate the bearings by hand to check for roughness, binding, or excessive play. A smooth, quiet rotation indicates a healthy bearing. Any unusual noises or vibrations should be investigated further.

If any bearing is found to be damaged or worn beyond acceptable limits, it must be replaced. Use only high-quality replacement bearings that meet or exceed the original equipment specifications. Before installing new bearings, thoroughly clean the bearing seats and shafts. Ensure that the bearing seats are free from any burrs, scratches, or other imperfections. Lubricate the new bearings with clean transmission oil before installation. Use a bearing driver or press to install the bearings, ensuring that they are properly seated. Avoid hammering directly on the bearings, as this can cause damage. Incorrectly installed bearings may cause premature failure. Check the bearing preload and adjust if necessary.

Shift Linkage Adjustment

Proper shift linkage adjustment is crucial for smooth and precise gear shifting. Misaligned or improperly adjusted shift linkages can cause difficulty in selecting gears, gear grinding, or even complete failure to engage a gear. Start by visually inspecting the shift linkages for any signs of wear, damage, or misalignment. Check the shift levers, rods, and pivot points for excessive play or looseness. Inspect the shift forks for wear or damage. Ensure that all connections are secure and properly lubricated. Refer to the tractor's service manual for the specific shift linkage adjustment procedures for your model.

The adjustment procedure typically involves loosening the shift linkage connections and adjusting the length of the shift rods until the shift levers are properly aligned and the gears engage smoothly. Use a gauge or alignment tool to ensure accurate alignment of the shift levers. After making the adjustments, tighten the shift linkage connections to the specified torque values. Test the shift linkage by selecting each gear and ensuring that it engages smoothly and completely. Recheck the shift linkage adjustment after a period of operation to ensure that it remains properly adjusted. Neglecting this part of the transmission service can cause excessive wear, damage, and even failure.

Hydraulic System Service

Hydraulic System Specifications

The hydraulic system on the CASE IH D35 is a vital component, responsible for powering numerous functions including the power steering, brakes, hitch, and auxiliary hydraulic circuits. Understanding the system's specifications is critical for proper maintenance and repair. The system operates at a specific pressure range, typically between 2000 and 2500 PSI, which can be confirmed by consulting the tractor's technical data sheet. The hydraulic oil reservoir capacity is approximately 15 gallons, and the recommended hydraulic fluid type is CASE IH Hy-Tran Ultra or equivalent. Using the incorrect fluid can lead to reduced performance, increased wear, and potential system damage. Regular checks of the fluid level and condition are essential for maintaining optimal performance.

The hydraulic pump, usually a gear-type pump, delivers a specific flow rate at a given engine RPM. This flow rate is crucial for ensuring sufficient hydraulic power for all connected systems. A pressure relief valve is integrated into the system to prevent over-pressurization, safeguarding components from damage. Proper adjustment of this valve is critical; incorrect settings can lead to either insufficient power or component failure. The hydraulic filter, typically a spin-on type, plays a vital role in removing contaminants from the hydraulic fluid. Regularly replacing the hydraulic filter, as recommended in the maintenance schedule, is crucial for extending the life of the hydraulic system components. Understanding these specifications and adhering to the recommended maintenance schedule will ensure the longevity and efficient operation of the D35's hydraulic system.

Troubleshooting Hydraulic System Problems

Diagnosing hydraulic system problems requires a systematic approach. Start by visually inspecting the system for any obvious leaks at hoses, fittings, and hydraulic components. Check the hydraulic fluid level and condition, noting any discoloration, foaming, or unusual odors, as these can indicate contamination or fluid breakdown. Operate the tractor and observe the performance of the hydraulic functions. Slow or weak operation, erratic movements, or complete failure can provide valuable clues to the underlying problem.

Use a pressure gauge to check the system pressure at various test points, as specified in the service manual. Compare the readings to the system specifications to identify pressure drops or over-pressurization. If a particular hydraulic function is not working correctly, isolate the problem to specific components. For example, if the hitch is not lifting, check the hitch control valve, cylinder, and hydraulic lines. Remember to relieve hydraulic pressure before disconnecting any lines or components to prevent injury. By carefully analyzing the symptoms and using appropriate diagnostic tools, you can effectively troubleshoot hydraulic system problems and identify the necessary repairs.

Hydraulic Pump Service

Servicing the hydraulic pump requires precision and cleanliness. Before removing the pump, disconnect the battery negative cable to prevent accidental electrical shorts. Drain the hydraulic fluid to minimize spillage during removal. Carefully disconnect the hydraulic lines from the pump, plugging the lines to prevent contamination. Inspect the pump mounting bolts for damage or corrosion, and remove the pump from the tractor. Thoroughly clean the exterior of the pump before disassembling it.

Refer to the service manual for detailed disassembly instructions and torque specifications. Inspect the internal components of the pump, including the gears, housing, and seals, for wear, damage, or corrosion. Replace any worn or damaged parts with new components. Reassemble the pump according to the service manual instructions, ensuring that all seals are properly installed. Before reinstalling the pump, prime it with hydraulic fluid to prevent cavitation. Reconnect the hydraulic lines and the battery negative cable. Start the tractor and check for leaks. Bleed the hydraulic system to remove any trapped air. Verify the pump's output pressure and flow rate to ensure proper operation.

Hydraulic Valve Service

Hydraulic valves control the direction and flow of hydraulic fluid, directing power to various functions. When servicing hydraulic valves, cleanliness is paramount to prevent contamination. Before removing a valve, relieve the hydraulic pressure and disconnect the battery negative cable. Carefully disconnect the hydraulic lines from the valve, labeling each line to ensure correct reassembly. Inspect the valve body for cracks or damage. Disassemble the valve according to the service manual instructions, paying close attention to the orientation of the internal components.

Inspect the valve spools, seats, and springs for wear, damage, or corrosion. Clean the valve components with a solvent and compressed air. Replace any worn or damaged parts with new components. Reassemble the valve according to the service manual instructions, ensuring that all seals are properly installed. When reinstalling the valve, torque the hydraulic line fittings to the specified torque. Start the tractor and check for leaks. Operate the hydraulic functions and verify that the valve is functioning correctly.

Hydraulic Cylinder Service

Hydraulic cylinders convert hydraulic pressure into linear motion, powering functions like the hitch and loader. When servicing hydraulic cylinders, safety is crucial. Relieve the hydraulic pressure and disconnect the battery negative cable. Disconnect the hydraulic lines from the cylinder. Remove the cylinder from the tractor, taking care to support its weight. Secure the cylinder in a vise or suitable holding fixture. Loosen the cylinder end cap or gland nut, being careful as it may be under pressure. Disassemble the cylinder according to the service manual instructions.

Inspect the cylinder barrel, piston, rod, and seals for wear, damage, or corrosion. Hone the cylinder barrel if necessary to remove scratches or corrosion. Replace any worn or damaged parts with new components. Install new seals, ensuring that they are properly lubricated. Reassemble the cylinder according to the service manual instructions, tightening the end cap or gland nut to the specified torque. Reinstall the cylinder on the tractor, reconnect the hydraulic lines, and reconnect the battery negative cable. Start the tractor and check for leaks. Operate the hydraulic function and verify that the cylinder is extending and retracting smoothly.

Hydraulic Hose and Fitting Inspection

Hydraulic hoses and fittings are critical for transmitting hydraulic fluid throughout the system. Regular inspection of hoses and fittings is essential for preventing leaks and ensuring system reliability. Visually inspect the hoses for cracks, abrasions, bulges, or kinks. Check the fittings for corrosion, damage, or leaks. Pay close attention to the areas where the hoses are clamped or routed near sharp edges. Replace any hoses or fittings that show signs of wear or damage. When replacing hoses, use the correct type and length of hose for the application.

Ensure that the fittings are compatible with the hoses and that they are properly tightened. Over-tightening fittings can damage the threads or hoses, while under-tightening can lead to leaks. Follow the torque specifications provided in the service manual. After replacing hoses or fittings, start the tractor and check for leaks. Periodically inspect the hoses and fittings, especially after heavy use or after making repairs to the hydraulic system. Proactive inspection and replacement of worn or damaged hoses and fittings can prevent costly downtime and ensure the safe and reliable operation of the hydraulic system.

Electrical System Service

Braking System Service

Braking System Specifications

Understanding the specific operational parameters of your CASE IH D35's braking system is crucial for effective maintenance and repair. Consult the detailed specification charts provided in the appendix of this manual for precise measurements regarding brake pad/shoe thickness, disc/drum diameter tolerances, and hydraulic system pressure. Exceeding these tolerances can drastically reduce braking performance and pose significant safety risks. Always verify that replacement components meet or exceed the original equipment manufacturer (OEM) specifications to ensure optimal performance and longevity. Incorrect specifications can lead to premature wear, system failure, and compromised safety.

Beyond physical dimensions, the hydraulic system specifications are equally vital. The master cylinder bore size, wheel cylinder bore sizes, and brake line diameter all contribute to the overall braking force applied at each wheel. Ensure that all hydraulic components are compatible with the D35's specifications and that the correct type of brake fluid is used. Refer to the fluids and lubricants section of this manual for the recommended brake fluid type. Contamination or the use of an incorrect fluid can damage seals, corrode internal components, and severely diminish braking effectiveness. Always perform a complete system flush when replacing hydraulic components or after encountering any signs of contamination.

Troubleshooting Braking System Problems

Effective troubleshooting is the cornerstone of efficient brake system repair. Begin by carefully observing the symptoms of the problem. Does the brake pedal feel spongy? Is there excessive travel before the brakes engage? Are the brakes pulling to one side during application? These observations can provide valuable clues to the underlying issue. Also, pay close attention to any unusual noises, such as squealing, grinding, or hissing sounds, which can indicate worn brake pads, damaged rotors, or leaking hydraulic lines. Recording these symptoms systematically will assist in a more accurate diagnosis.

A thorough visual inspection is the next step in the troubleshooting process. Carefully examine the brake lines for any signs of leaks, cracks, or corrosion. Inspect the brake pads or shoes for excessive wear, uneven wear patterns, or contamination. Check the condition of the brake rotors or drums for scoring, warping, or cracking. Look for any signs of hydraulic fluid leakage around the master cylinder, wheel cylinders, or calipers. Addressing these issues early can prevent further damage and more costly repairs down the line. Regular inspection will also allow for proactive maintenance.

Brake Pad/Shoe Replacement

Replacing worn brake pads or shoes is a fundamental aspect of brake system maintenance. Before beginning the replacement process, ensure the tractor is parked on a level surface, the engine is off, and the parking brake is engaged. Chock the wheels for added safety. Always work on one brake assembly at a time, using the opposite side as a reference for reassembly. Consult the exploded diagrams in the parts catalog for the proper orientation of all components.

Carefully remove the old brake pads or shoes, noting the location of any shims, clips, or retaining hardware. Clean the brake caliper or drum assembly thoroughly with brake cleaner, removing any dirt, rust, or debris. Inspect the brake rotor or drum for wear and damage, and resurface or replace as necessary. Apply a thin layer of brake grease to the contact points between the brake pads/shoes and the caliper/drum assembly. Install the new brake pads or shoes, ensuring they are properly seated and secured. Reassemble all components in the reverse order of disassembly, and torque all fasteners to the specified values. After completing the replacement, pump the brake pedal several times to ensure proper brake engagement. Test the brakes at low speed before operating the tractor at normal speeds. Finally, remember to dispose of old brake pads/shoes properly, as they often contain hazardous materials.

Brake Caliper/Cylinder Service

Servicing brake calipers and cylinders involves a more in-depth understanding of the braking system. If you observe leaks, sticking pistons, or corrosion, a complete rebuild may be necessary. Start by carefully disconnecting the brake line from the caliper or cylinder, plugging the line to prevent fluid loss. Disassemble the caliper or cylinder, noting the location and orientation of all seals, pistons, and springs. Clean all components thoroughly with brake cleaner, inspecting for any signs of damage or wear.

Replace all seals and O-rings with new components from a reputable manufacturer. Lightly lubricate the pistons and cylinder walls with brake fluid before reassembly. Carefully reassemble the caliper or cylinder, ensuring all components are properly seated and secured. Reconnect the brake line and bleed the brake system to remove any air. Inspect for leaks and verify proper brake function. Overhauling the brake caliper or cylinder can extend the lifespan of your brakes while also improving braking performance.

Brake Line Inspection and Replacement

The brake lines are a critical component of the hydraulic braking system, responsible for transmitting hydraulic pressure from the master cylinder to the wheel cylinders or calipers. Regular inspection of the brake lines is essential to identify any signs of damage or deterioration. Look for cracks, kinks, corrosion, or leaks. Pay particular attention to areas where the brake lines are exposed to abrasion or flexing. Any signs of damage warrant immediate replacement.

When replacing brake lines, use only high-quality, DOT-approved brake line tubing. Ensure the new brake lines are the correct length and diameter for your tractor model. Carefully bend the brake lines to match the original configuration, avoiding any sharp bends or kinks. Use appropriate fittings and connectors to ensure a leak-proof seal. After replacing the brake lines, bleed the brake system thoroughly to remove any air. Inspect for leaks and verify proper brake function. Remember, safe braking is paramount to safe operation of the tractor, and a failing brake line can be a major safety hazard.

Steering System Service

Steering System Specifications

The steering system on your CASE IH D35 is a critical component for safe and efficient operation. Before undertaking any service or repair, it's essential to understand the key specifications of the system. These specifications often include the type of steering system (manual or power-assisted), the steering ratio, the recommended tire pressure, and the acceptable tolerances for play in the steering linkage. Consulting the original manufacturer's specifications for your specific model is paramount, as these values directly impact the steering performance and overall safety of the tractor. Ensure you have the correct torque specifications for all fasteners, as improper tightening can lead to premature wear or failure of steering components. Knowing these specifications upfront helps diagnose problems more accurately and ensures that repairs are carried out correctly, maintaining the intended performance of the steering system.

Furthermore, understanding the type of hydraulic fluid used in the power steering system (if equipped) is crucial. Using the incorrect fluid can damage the seals and internal components of the power steering pump and gearbox. Always refer to the manufacturer's recommendations for the specific type of hydraulic fluid required. Check the fluid level regularly and top it off as needed to ensure proper lubrication and pressure within the system. Keep in mind that certain environments or applications might necessitate the use of specialized hydraulic fluids. Ignoring these specifications can lead to costly repairs and significantly reduce the lifespan of your steering system.

Troubleshooting Steering System Problems

Diagnosing steering system problems requires a systematic approach. Begin by visually inspecting all components, including the steering linkage, power steering pump (if equipped), steering gearbox, and hydraulic lines. Look for signs of leaks, damage, or excessive wear. Pay close attention to the condition of the tie rod ends, ball joints, and other pivot points in the steering linkage. These are common areas for wear and can cause excessive play in the steering. Listen for unusual noises, such as squealing or grinding, which could indicate a problem with the power steering pump or gearbox. A thorough visual inspection can often reveal the source of the problem.

Next, check the steering fluid level (if equipped) and inspect the fluid for contamination. Foamy or milky fluid can indicate the presence of air or water in the system, which can affect steering performance. Test the steering system for excessive play. With the engine running, gently move the steering wheel back and forth to observe the amount of free play before the wheels begin to turn. Excessive play can indicate worn steering linkage components or a problem within the steering gearbox. Finally, check the tire pressure to ensure it is within the manufacturer's recommended range. Uneven tire pressure can cause the tractor to pull to one side, making steering difficult.

Steering Gearbox Service

Servicing the steering gearbox typically involves adjusting the internal components to eliminate excessive play and ensuring proper lubrication. Before disassembling the steering gearbox, make sure to mark the location of all components for correct reassembly. Refer to the service manual for detailed instructions on how to adjust the steering gearbox. Over-tightening the adjustment screws can damage the internal components, while under-tightening will not eliminate the play. During disassembly, carefully inspect all parts for wear, corrosion, or damage. Replace any worn or damaged parts to ensure the long-term reliability of the steering gearbox.

Cleaning the internal components of the steering gearbox is crucial. Use a solvent to remove any dirt, grease, or debris. Inspect the bearings and races for signs of wear or damage. Replace the seals and gaskets to prevent leaks. When reassembling the steering gearbox, use the correct torque specifications for all fasteners. Over-tightening the fasteners can damage the housing, while under-tightening can lead to leaks. Refill the steering gearbox with the recommended type and quantity of lubricant. After reassembly, test the steering gearbox for proper operation. Rotate the input shaft and check for smooth, consistent movement of the output shaft. Adjust the play in the steering gearbox as needed to eliminate any excessive free play.

Power Steering Pump Service

The power steering pump provides the hydraulic pressure necessary for power-assisted steering. Inspect the power steering pump for leaks, damage, or unusual noises. A whining or squealing noise from the pump can indicate a low fluid level, a worn pump, or a blockage in the hydraulic lines. Check the drive belt for proper tension and condition. A loose or worn belt can cause the pump to operate inefficiently. Inspect the hydraulic lines for leaks, kinks, or damage. Replace any damaged lines to prevent fluid loss and ensure proper operation of the power steering system.

If the power steering pump is not functioning properly, it may need to be rebuilt or replaced. When rebuilding the pump, carefully inspect all internal components for wear or damage. Replace any worn or damaged parts, including the seals, bearings, and vanes. Use the correct torque specifications for all fasteners when reassembling the pump. After reassembly, test the power steering pump for proper operation. Check the hydraulic pressure to ensure it is within the manufacturer's recommended range. Bleed the air from the power steering system after servicing the pump. Air in the system can cause the steering to feel spongy or erratic. Consult the service manual for the proper bleeding procedure.

Steering Linkage Inspection and Replacement

The steering linkage connects the steering gearbox to the front wheels, transferring the steering input. Regularly inspect the steering linkage for wear, damage, or excessive play. Pay close attention to the tie rod ends, ball joints, and drag links. These components are subject to a lot of stress and wear over time. Check the dust boots on the tie rod ends and ball joints. Damaged or missing dust boots can allow dirt and moisture to enter the joints, causing premature wear. Replace any worn or damaged components to maintain proper steering geometry and prevent excessive play in the steering.

When replacing steering linkage components, use the correct parts for your specific model. Improperly sized or designed components can affect steering performance and safety. Use the correct torque specifications for all fasteners when installing the new components. Over-tightening the fasteners can damage the components, while under-tightening can lead to looseness and premature wear. After replacing steering linkage components, have the front-end alignment checked and adjusted. Proper alignment is essential for optimal handling and tire wear. Consult the service manual for the recommended alignment specifications.

Axle and Wheel Service

Axle Specifications

Maintaining the axles of your CASE IH D35 is crucial for ensuring smooth operation and optimal performance. Understanding the specifications of your axles, including the torque settings for axle nuts and the type of lubricant required, is fundamental to proper maintenance. Consult the detailed specification chart in the appendix of this manual to find the exact measurements and tolerances applicable to your model and year of manufacture. Failure to adhere to these specifications can lead to premature wear, reduced efficiency, and even catastrophic failure of the axle components. Regular inspection and maintenance according to these specs will significantly extend the life of your D35's axles.

Beyond the basic dimensions, understanding the load-bearing capacity of your axles is equally important. Overloading the tractor beyond its designated weight limits can severely stress the axles, leading to bending, cracking, or complete failure. Always refer to the manufacturer's recommendations for safe operating loads and avoid exceeding them. Pay close attention to the distribution of weight when using implements, ensuring that the load is evenly distributed across the axles. Regular inspection for signs of stress or damage is a vital part of preventative maintenance and can save you costly repairs down the line.

Troubleshooting Axle Problems

Diagnosing axle problems early can prevent major repairs and downtime. Common symptoms of axle issues include unusual noises such as grinding, clicking, or popping, especially during turns. Vibrations felt through the tractor, particularly at specific speeds, can also indicate axle problems. Excessive play in the wheel bearings or noticeable leaking of lubricant around the axle seals are further signs that attention is needed. Ignoring these symptoms can lead to more significant damage and potentially dangerous operating conditions.

When troubleshooting, start by visually inspecting the axles for any obvious damage, such as cracks, bends, or leaks. Check the tightness of all axle nuts and bolts, ensuring they are torqued to the specifications outlined in this manual. Listen carefully for unusual noises while the tractor is in operation, and try to isolate the source of the sound. Use a pry bar to check for excessive play in the wheel bearings and axle shafts. By systematically eliminating potential causes, you can pinpoint the source of the problem and determine the appropriate course of action. Remember to always prioritize safety when working on mechanical systems, and disconnect the battery before beginning any repairs.

Axle Shaft Service

Servicing the axle shafts is a more involved process and typically requires specialized tools and knowledge. Before attempting any axle shaft service, ensure the tractor is properly supported on jack stands, and the parking brake is engaged. Disconnect the battery to prevent accidental starting of the engine. Carefully remove the wheel and tire assembly, followed by the brake components and any other parts that obstruct access to the axle shaft. Pay close attention to the order in which parts are removed, and make detailed notes or take pictures to aid in reassembly.

Once the axle shaft is accessible, inspect it thoroughly for any signs of wear, damage, or bending. Minor surface rust can be removed with fine-grit sandpaper, but any significant damage warrants replacement of the shaft. Use a specialized axle puller to remove the shaft from the axle housing. Avoid using excessive force, as this can damage the housing or the shaft itself. Once the shaft is removed, clean the bearing surfaces and inspect the seals for wear or damage. Replace any worn or damaged components before reassembling the axle. Apply a thin coat of grease to the bearing surfaces and seals to ensure proper lubrication during operation.

Wheel Bearing Service

Proper wheel bearing service is essential for maintaining smooth and efficient wheel rotation. Wheel bearings are subject to significant wear and tear, and regular inspection and maintenance are crucial for preventing premature failure. Common signs of worn wheel bearings include excessive play in the wheels, grinding noises during rotation, and overheating of the wheel hub. Ignoring these symptoms can lead to bearing failure, which can cause damage to the axle and potentially lead to loss of control of the tractor.

To service wheel bearings, start by removing the wheel and tire assembly. Clean the area around the wheel hub to prevent dirt and debris from entering the bearing. Carefully remove the bearing cap or cover, and inspect the bearing for signs of wear, damage, or contamination. Clean the bearing with a solvent and inspect the rollers and races for pitting, cracks, or discoloration. If any damage is found, replace the bearing with a new one. Pack the new bearing with high-quality grease before installing it in the wheel hub. Ensure the bearing is properly seated and tightened to the manufacturer's specifications. Adjust the bearing preload according to the manual to ensure proper operation and longevity.

Tire Inspection and Replacement

Tires are a critical component of your CASE IH D35, providing traction, stability, and cushioning. Regular tire inspection is essential for identifying potential problems and ensuring safe operation. Check the tire pressure regularly and inflate to the recommended levels. Inspect the tires for cuts, bulges, or excessive wear. Pay close attention to the tread depth, as worn tires can significantly reduce traction and increase the risk of skidding. Uneven wear patterns can indicate alignment issues or other mechanical problems.

When replacing tires, it's crucial to choose the correct size and type for your tractor and intended use. Consult the operator's manual for recommended tire sizes and load ratings. Ensure the tires are properly mounted and inflated to the recommended pressure. Use a calibrated torque wrench to tighten the wheel nuts to the specified torque. After installing new tires, it's essential to break them in properly. Avoid sudden acceleration and braking during the first few hours of operation to allow the tires to seat properly on the rims. Regularly inspect the tires for any signs of leaks or damage, and address any issues promptly to prevent further problems.

Wheel Alignment

Proper wheel alignment is crucial for maintaining optimal handling, tire wear, and fuel efficiency. Misaligned wheels can cause uneven tire wear, reduced steering response, and increased fuel consumption. Regular wheel alignment checks are essential for ensuring the tractor operates efficiently and safely. Signs of misalignment include uneven tire wear, pulling to one side during operation, and excessive steering wheel vibration.

Wheel alignment procedures typically require specialized equipment and expertise. Consult a qualified technician or service center to perform wheel alignment on your CASE IH D35. The technician will use precision instruments to measure the toe-in, camber, and caster angles of the wheels. Adjustments will be made to the steering linkage and suspension components to bring the alignment within the manufacturer's specifications. After the alignment is complete, test drive the tractor to ensure proper handling and steering response. Regularly check the tire wear patterns to monitor the effectiveness of the alignment and make any necessary adjustments.

Air Conditioning Service (If Equipped)

Air Conditioning Specifications

Maintaining optimal performance of your CASE IH D35's air conditioning system requires adhering to precise specifications for refrigerant type and charge levels. Always consult the specification plate located within the engine compartment or the cab to determine the correct refrigerant type, typically R-134a or R-1234yf. Using an incorrect refrigerant can severely damage the system components, leading to costly repairs and potential environmental hazards. Furthermore, ensure that the system's refrigerant charge is within the specified range to ensure proper cooling capacity and prevent compressor damage. Overcharging or undercharging the system can lead to inefficient operation and premature component failure.

Beyond refrigerant type and charge, it's crucial to understand the system's operating pressures under various ambient conditions. High-side and low-side pressures should be monitored using a manifold gauge set during operation. Refer to the pressure-temperature charts in this manual for guidance on acceptable pressure ranges based on the outside temperature. Significant deviations from these ranges can indicate underlying issues such as a clogged orifice tube, a faulty compressor, or the presence of non-condensable gases in the system. Regularly checking these specifications and comparing them to actual operating conditions is a proactive step in maintaining a reliable and efficient air conditioning system.

Troubleshooting Air Conditioning Problems

Diagnosing air conditioning issues effectively relies on a systematic approach, starting with a thorough inspection of all components. Begin by visually examining the compressor, condenser, evaporator, and hoses for signs of damage, leaks, or obstructions. Check the drive belt tension and condition to ensure proper compressor engagement. Listen for unusual noises emanating from the compressor, which could indicate internal wear or failure. These initial visual and auditory checks can often provide valuable clues about the source of the problem.

Following the visual inspection, utilize a manifold gauge set to measure the system's high-side and low-side pressures. Compare these readings to the pressure-temperature charts to determine if the system is operating within the specified range. If the pressures are outside the normal range, further investigation is required. Common problems include refrigerant leaks, a faulty compressor, a clogged orifice tube or expansion valve, or a malfunctioning condenser fan. A refrigerant leak detector can be used to pinpoint the source of leaks, while specialized tools can be used to test the compressor's performance and the functionality of the expansion valve.

Electrical issues can also contribute to air conditioning problems. Check the fuses and relays associated with the system to ensure they are functioning correctly. Inspect the wiring harness for any signs of damage, corrosion, or loose connections. A multimeter can be used to test the voltage and continuity of the electrical circuits. If the compressor clutch is not engaging, it could be due to a faulty clutch coil, a defective pressure switch, or a wiring issue. A systematic approach to troubleshooting, combining visual inspections, pressure readings, and electrical testing, is essential for accurately diagnosing and resolving air conditioning problems.

Refrigerant Charging and Recovery

Refrigerant charging and recovery procedures should always be performed by a qualified technician with the appropriate tools and knowledge. Improper handling of refrigerants can be harmful to the environment and can also damage the air conditioning system. Before charging or recovering refrigerant, ensure that the system is properly evacuated to remove any air or moisture. Air and moisture can contaminate the refrigerant and reduce the system's cooling efficiency. Use a vacuum pump to evacuate the system for the recommended duration, typically at least 30 minutes, and then check for leaks before proceeding with the charging process.

When charging the system, use a refrigerant scale to accurately measure the amount of refrigerant being added. Overcharging or undercharging the system can lead to performance issues and potential damage to the compressor. Refer to the vehicle's specifications for the correct refrigerant charge amount. During the charging process, monitor the system's pressures using a manifold gauge set and compare them to the pressure-temperature charts. If the pressures are not within the specified range, further investigation is required. After charging, allow the system to run for a few minutes and then recheck the pressures to ensure they are stable.

Refrigerant recovery should be performed whenever the system needs to be opened for repairs. Use a refrigerant recovery machine to safely remove the refrigerant from the system and store it in a designated container. Never vent refrigerant into the atmosphere, as it is harmful to the environment. Properly dispose of used refrigerant according to local regulations. After the recovery process is complete, inspect the system for any signs of leaks or damage before proceeding with the repairs.

Compressor Service

The compressor is the heart of the air conditioning system, responsible for circulating refrigerant throughout the circuit. Due to its complexity and crucial role, compressor service often requires specialized tools and expertise. Before attempting any compressor repairs, it's essential to properly evacuate the system to remove all refrigerant. This not only prevents environmental damage but also ensures a safe working environment. Disconnect the electrical connections to the compressor clutch to avoid accidental activation during the service process. Thoroughly inspect the compressor for any signs of damage, such as cracks, leaks, or excessive wear on the pulley or clutch.

If the compressor is found to be faulty, replacement is usually the best course of action. When installing a new compressor, it's crucial to flush the entire system to remove any contaminants, such as metal particles or oil sludge, that may have accumulated due to the previous compressor failure. A dedicated flushing agent and procedure should be used to ensure a thorough cleaning. Replace the receiver-drier or accumulator, as these components are designed to absorb moisture and contaminants and can become saturated over time. Lubricate the new compressor with the correct type and amount of refrigerant oil, as specified by the manufacturer. Incorrect lubrication can lead to premature compressor failure.

After installing the new compressor, connect the refrigerant lines and electrical connections. Evacuate the system to remove any air or moisture, and then charge it with the correct amount of refrigerant. Monitor the system's pressures and temperatures during operation to ensure that the compressor is functioning correctly. Listen for any unusual noises emanating from the compressor, which could indicate a problem. Regularly inspect the compressor belt tension and condition to ensure proper drive. Proper compressor service, including thorough system flushing, component replacement, and correct lubrication, is essential for maintaining a reliable and efficient air conditioning system.

Condenser and Evaporator Service

The condenser and evaporator are heat exchangers responsible for transferring heat to and from the refrigerant, respectively. Over time, these components can become clogged with debris, insects, or corrosion, reducing their efficiency and overall system performance. Regularly inspect the condenser and evaporator fins for any signs of blockage. Use a fin comb to straighten bent fins and remove any debris. A mild detergent and water solution can be used to clean the fins, but be careful not to damage them. Avoid using high-pressure washers, as they can bend or damage the fins.

If the condenser or evaporator is severely clogged or damaged, replacement may be necessary. When replacing either component, it's crucial to flush the entire system to remove any contaminants. Replace the receiver-drier or accumulator, as these components are designed to absorb moisture and contaminants and can become saturated over time. Inspect the refrigerant lines and connections for any signs of leaks or damage. Replace any worn or damaged O-rings or seals. Ensure that the new condenser or evaporator is properly installed and secured.

After installing the new condenser or evaporator, connect the refrigerant lines and evacuate the system to remove any air or moisture. Charge the system with the correct amount of refrigerant and monitor the system's pressures and temperatures during operation to ensure that the system is functioning correctly. Check the airflow across the condenser and evaporator to ensure that it is not obstructed. A properly maintained condenser and evaporator are essential for optimal air conditioning performance.

Preventative Maintenance

Recommended Lubricants and Fluids

Maintaining the proper lubrication and fluid levels in your CASE IH D35 is absolutely critical for its longevity and performance. Ignoring these simple steps can lead to costly repairs and downtime. Always consult the manufacturer's recommendations for specific lubricant types and viscosities suitable for your tractor's operating environment. Using the correct fluids ensures optimal engine cooling, hydraulic system performance, and transmission operation, contributing to a smooth and efficient operation of your machine. Keep a log of when you last filled or changed the fluids.

Choosing the right engine oil is paramount. Consider factors like the ambient temperature and the engine's operating hours when selecting the appropriate viscosity grade. Hydraulic fluid should meet or exceed the manufacturer's specifications to protect sensitive components from wear and corrosion. Always use genuine CASE IH lubricants and fluids or approved equivalents to guarantee compatibility and avoid compromising your warranty. It's also good practice to inspect your fluids on a regular basis.

Service Intervals

Adhering to the recommended service intervals is non-negotiable for preventing major mechanical failures and extending the lifespan of your CASE IH D35. These intervals are carefully determined by the manufacturer based on extensive testing and real-world operating conditions. Regularly scheduled maintenance, such as oil changes, filter replacements, and lubrication of moving parts, helps to identify potential issues before they escalate into significant problems. By proactively addressing minor maintenance needs, you minimize the risk of unexpected breakdowns and costly repairs, ensuring that your tractor remains in peak operating condition.

Consult your owner's manual for a comprehensive list of service tasks and their corresponding intervals. Remember to adjust the service schedule based on your tractor's actual usage. If you operate in harsh conditions or experience heavy workloads, more frequent maintenance may be necessary. Keep a detailed record of all maintenance performed, including dates, tasks completed, and parts replaced. This documentation will not only help you track your maintenance progress but also serve as valuable proof of proper care in case of warranty claims or resale.

Inspection Checklist

A thorough inspection checklist is your first line of defense against potential problems with your CASE IH D35. Make it a habit to regularly inspect all critical components, including the engine, transmission, hydraulics, brakes, tires, and electrical system. Look for signs of wear, damage, leaks, or corrosion. Pay close attention to fluid levels, belt tension, hose conditions, and tire pressure. Addressing minor issues promptly can prevent them from developing into major failures. Regular inspections can also save you time and money in the long run.

Carry a copy of your inspection checklist with you and systematically work through each item. Don't just rely on visual inspections; listen for unusual noises, feel for excessive heat or vibration, and smell for unusual odors. Any anomaly should be investigated further and addressed immediately. It's also helpful to keep a log of your inspection findings, noting any corrective actions taken. This record will help you track the overall health of your tractor and identify any recurring issues that may require more in-depth maintenance or repair.

Storage Procedures

Proper storage is crucial for protecting your CASE IH D35 during periods of inactivity, especially during the off-season. Neglecting storage procedures can lead to corrosion, fuel degradation, battery discharge, and other issues that can impact your tractor's performance and longevity. Start by thoroughly cleaning your tractor, removing any dirt, debris, or residue. Drain all fluids, including fuel, coolant, and hydraulic fluid, and replace them with fresh fluids before storage. This prevents corrosion and protects the engine from any other issues.

Disconnect the battery and store it in a cool, dry place. Consider using a battery maintainer to keep it charged during storage. Protect the tires from sunlight and ozone by covering them with tarps or storing the tractor indoors. Lubricate all moving parts to prevent rust and corrosion. Seal off the exhaust pipe to prevent moisture and pests from entering the engine. By following these simple storage procedures, you can ensure that your CASE IH D35 is ready to perform when you need it most, minimizing downtime and maximizing its lifespan.

Appendix

Torque Specifications

Maintaining proper torque on fasteners is absolutely critical for the safe and reliable operation of the CASE IH D35. Under-torqued bolts can loosen over time, leading to component failure and potential hazards. Over-torqued bolts, on the other hand, can stretch, weaken, or even break, rendering the joint ineffective. Always consult the torque specifications chart before tightening any bolt, nut, or screw on your tractor. These values are carefully calculated by engineers based on the fastener size, material, and intended application. Using a calibrated torque wrench is essential to ensure accurate and consistent results.

The following torque chart provides general guidelines for common fastener sizes. However, it's important to note that specific applications may require different torque values. Always refer to the relevant section of this manual or consult a qualified mechanic for precise torque specifications for the component you are working on. The torque values listed are typically expressed in foot-pounds (ft-lbs) or inch-pounds (in-lbs). Ensure your torque wrench is set to the correct units of measurement before applying torque. Remember to apply lubricant (such as anti-seize compound) to the threads of fasteners where recommended, as this can significantly affect the achieved torque.

Torque Chart (General Guidelines - Always Verify Specific Requirements)

Wiring Diagrams

Electrical systems are the lifeblood of any modern tractor, and the CASE IH D35 is no exception. These complex networks of wires, relays, and sensors control everything from starting the engine to operating the lights and instruments. Understanding the wiring diagram is crucial for diagnosing electrical problems and performing repairs safely and effectively. These diagrams are essentially roadmaps of the electrical system, showing the connections between all the various components. They use standardized symbols and color codes to represent different wires, circuits, and devices, enabling you to trace the flow of electricity and pinpoint the source of a fault.

The detailed wiring diagrams provided in this section are essential for troubleshooting electrical issues. Each diagram is clearly labeled and organized to facilitate easy tracing of circuits. Pay close attention to the color codes of the wires, as these are critical for identifying the correct connections. Remember that working with electrical systems can be dangerous, so always disconnect the battery before beginning any repairs. Using a multimeter to test voltage and continuity is an essential skill for any tractor mechanic. Consult the electrical troubleshooting section of this manual for guidance on using these tools to diagnose electrical problems.

[Placeholder for Wiring Diagram Image - Consult the actual manual for accurate diagrams]

Parts List

Maintaining your CASE IH D35 tractor requires access to the correct replacement parts. Using genuine CASE IH parts ensures proper fit, function, and performance, minimizing the risk of premature failure or damage to other components. The parts list provided in this section is a comprehensive guide to identifying and ordering the parts you need to keep your tractor running smoothly. Each part is listed with its part number, description, and diagram reference, allowing you to easily locate the specific item you are looking for. Always double-check the part number against your tractor's serial number to ensure compatibility.

The parts list is organized by component groups, making it easier to find parts related to a specific system or area of the tractor. For example, you can quickly find all the parts related to the engine, transmission, or hydraulic system. The parts list also includes exploded diagrams, which show the relationship between different parts and their correct assembly order. When ordering parts, be sure to specify the quantity required and provide the correct part number to your CASE IH dealer. Using aftermarket parts may seem like a cheaper alternative, but they often lack the quality and durability of genuine CASE IH parts, which can lead to problems down the road.

Sample Parts List Excerpt

Troubleshooting Charts

When your CASE IH D35 experiences a problem, the troubleshooting charts in this section can help you diagnose the cause and identify the necessary repairs. These charts are designed to guide you through a logical process of elimination, starting with the most common causes and gradually narrowing down the possibilities. Each chart focuses on a specific system or symptom, such as engine starting problems, hydraulic system malfunctions, or electrical issues. By following the steps outlined in the chart, you can systematically check various components and connections to pinpoint the source of the problem.

Each troubleshooting step includes a description of the test, the expected result, and the possible causes if the result is not as expected. For example, if the engine fails to start, the chart might instruct you to check the battery voltage, the fuel supply, and the ignition system. If the battery voltage is low, the chart would then direct you to check the battery terminals, the charging system, and the battery itself. Using these charts requires a basic understanding of tractor systems and a willingness to perform simple tests and inspections. Always use caution when working around moving parts and follow all safety precautions outlined in this manual.

Example Troubleshooting Chart: Engine Won't Start