John Deere 995 Manual: A Comprehensive Guide

About the John Deere 995 Combine

Model Overview and Specifications

The John Deere 995 Combine is a robust and versatile machine designed for efficient harvesting of a variety of crops. Understanding its capabilities and limitations is crucial for optimal performance and longevity. This section provides a detailed overview of the 995, outlining its key components, operational systems, and critical specifications. Knowing these details will enable you to better troubleshoot issues, perform preventative maintenance, and operate the combine safely and effectively. Familiarize yourself with the engine specifications, hydraulic system pressures, grain tank capacity, and header compatibility as these factors directly impact the combine's performance in the field.

The 995 typically features a powerful John Deere diesel engine, specifically designed for the demanding conditions of harvest. This engine provides the necessary horsepower to drive the threshing, separating, and cleaning mechanisms of the combine. Key engine specifications such as horsepower rating, torque output, and fuel consumption are critical for understanding the combine's performance capabilities and fuel efficiency. Regularly checking and maintaining the engine, including oil changes, filter replacements, and cooling system inspections, will ensure reliable operation and prevent costly repairs. Consult the engine manufacturer's specifications for detailed maintenance procedures and recommended service intervals.

The combine's harvesting process begins with the header, which cuts and gathers the crop. The header type and size are crucial for matching the combine to the specific crop being harvested and field conditions. Different header options are available for harvesting crops like wheat, corn, soybeans, and sunflowers. Proper header adjustment is essential for minimizing grain loss and ensuring efficient harvesting. This includes setting the cutting height, reel speed, and deck plate spacing according to crop conditions. Refer to the header manufacturer's manual for specific instructions on header setup and operation.

The threshing and separating systems are responsible for separating the grain from the plant material. The 995 typically employs a rotary threshing system, which provides efficient and gentle separation of grain. Understanding the operation of the rotor, concave, and other separating components is essential for optimizing grain quality and minimizing grain loss. Adjustments to the rotor speed and concave clearance are crucial for adapting to different crop conditions and moisture levels. Regularly inspecting the threshing and separating components for wear and damage is important for maintaining optimal performance.

Safety Precautions and Operating Guidelines

Operating a combine like the John Deere 995 involves inherent risks, making safety precautions paramount. This section provides essential safety guidelines that must be followed at all times during operation, maintenance, and transport of the machine. Ignoring these guidelines can lead to serious injury or even death. Always prioritize safety and never take shortcuts that could compromise your well-being or the safety of others. Remember, a well-maintained machine operated by a skilled and safety-conscious operator is the key to a productive and safe harvest.

Before starting the engine, thoroughly inspect the combine for any potential hazards, such as loose parts, fluid leaks, or damaged components. Ensure all safety shields and guards are in place and functioning correctly. Check the condition of the tires and tire pressure, as underinflated tires can affect stability and handling. Verify that all lights and signals are working properly, especially during nighttime operation or when transporting the combine on public roads. Addressing any issues before starting the engine can prevent accidents and costly repairs.

Always wear appropriate personal protective equipment (PPE) when operating or working on the combine. This includes safety glasses, hearing protection, gloves, and sturdy footwear. Safety glasses protect your eyes from flying debris, while hearing protection reduces the risk of hearing damage from the loud engine and machinery noise. Gloves protect your hands from cuts, abrasions, and chemical exposure. Sturdy footwear provides good traction and protects your feet from injury. Choose PPE that is specifically designed for the tasks you are performing and ensure it fits properly.

Never operate the combine under the influence of alcohol or drugs. Alcohol and drugs impair judgment, reaction time, and coordination, increasing the risk of accidents. Ensure you are well-rested and alert before operating the combine, as fatigue can also impair your ability to react quickly and make sound decisions. If you are taking any medications that may affect your alertness or coordination, consult your doctor before operating the machine. Prioritizing your physical and mental well-being is essential for safe combine operation.

Be aware of your surroundings at all times. Scan the field for obstacles, such as rocks, ditches, or power lines. Maintain a safe distance from other workers, vehicles, and bystanders. Use caution when operating on slopes or uneven terrain, as the combine can easily tip over. Always lower the header when transporting the combine on public roads and follow all traffic laws. Keep a watchful eye out for wildlife and avoid causing unnecessary disturbance to the environment. A proactive approach to situational awareness can prevent accidents and protect both people and property.

Operation

Pre-Operation Checks and Adjustments

Before venturing into the field, a thorough pre-operation inspection of your John Deere 995 is absolutely critical. This ensures optimal performance, minimizes downtime, and most importantly, guarantees the safety of the operator and those working around the combine. Begin by meticulously checking all fluid levels, including engine oil, coolant, hydraulic fluid, and fuel. Low fluid levels can lead to overheating, decreased efficiency, and potential damage to vital components. Next, inspect all belts and hoses for signs of wear and tear, cracks, or fraying. Replace any worn belts or hoses immediately to prevent unexpected breakdowns during harvest. Remember, a well-maintained machine is a productive machine.

Beyond the basics, pay special attention to the condition of the tires. Correct tire pressure is essential for proper ground contact, even weight distribution, and fuel efficiency. Consult your operator's manual for the recommended tire pressure based on your operating conditions and the weight of the combine. Inspect the tires for any cuts, bulges, or uneven wear patterns. Addressing tire issues before heading into the field can prevent costly repairs and potential safety hazards. A proactive approach to maintenance always pays dividends in the long run.

Finally, don't neglect the vital systems that impact harvest quality and efficiency. Check the condition of the cutterbar knives, ensuring they are sharp and properly aligned. Dull or misaligned knives can lead to increased grain loss and uneven cutting. Examine the concave and cylinder settings, adjusting them according to the type and condition of the crop you will be harvesting. Proper concave and cylinder settings are crucial for efficient threshing and minimal grain damage. Refer to the operator's manual for detailed guidance on adjusting these settings for different crops. Taking the time for these pre-operation checks will result in a smoother, more productive harvesting season.

Starting and Stopping Procedures

Proper starting and stopping procedures are fundamental to extending the life of your John Deere 995 and preventing unnecessary wear and tear on its components. Before starting the engine, ensure the parking brake is engaged and the transmission is in neutral. This prevents accidental movement of the combine. Turn the key to the "on" position and allow the instrument panel to illuminate and the engine management system to run its self-diagnostics. This ensures that all systems are functioning correctly before you attempt to start the engine. Listen for any unusual noises or warning lights that may indicate a problem.

Once the self-diagnostics are complete, turn the key to the "start" position and hold it until the engine starts. Avoid cranking the engine for extended periods, as this can overheat the starter motor and drain the battery. If the engine fails to start after a few attempts, consult the operator's manual for troubleshooting tips. Once the engine is running, allow it to idle for a few minutes to allow the oil to circulate and the engine to warm up. Avoid immediately revving the engine or putting it under heavy load when it is cold.

When stopping the engine, allow it to idle for a few minutes to cool down gradually. This prevents thermal shock and helps to prolong the life of the engine components. Engage the parking brake and put the transmission in neutral before turning off the engine. Finally, remove the key to prevent unauthorized operation of the combine. Following these simple starting and stopping procedures will help ensure the longevity and reliability of your John Deere 995.

Header and Threshing Adjustments

Achieving optimal harvesting performance hinges on precise header and threshing adjustments, tailored to the specific crop and field conditions. The header, responsible for gathering the crop, should be adjusted to minimize header losses. Ensure the header height is appropriate for the crop being harvested, preventing stalks from being left behind or prematurely knocking heads off. The reel speed should be synchronized with the ground speed to gently guide the crop into the cutterbar without excessive shattering. Periodically check and adjust the header flotation to maintain consistent cutting height, especially in uneven terrain.

The threshing mechanism, which separates the grain from the plant material, requires careful calibration to maximize grain separation and minimize grain damage. Adjust the cylinder speed and concave clearance based on the crop type and moisture content. Lower cylinder speeds and wider concave clearances are generally recommended for dry crops, while higher speeds and tighter clearances are needed for damp crops. Monitor the grain sample for cracked or broken kernels, which indicate excessive cylinder speed or insufficient concave clearance. Conversely, unthreshed heads suggest insufficient cylinder speed or excessive concave clearance.

Optimizing fan speed and sieve settings is equally critical for clean grain separation. Adjust the fan speed to blow away lightweight chaff and debris without carrying away valuable grain. The sieve settings should be adjusted to allow clean grain to pass through while retaining larger pieces of unthreshed material. Regularly inspect the tailings return system, which recycles unthreshed material back to the cylinder for further processing. Fine-tuning these adjustments throughout the harvesting day, as crop conditions change, will significantly improve the overall efficiency and profitability of your harvesting operation. Remember to consult your operator's manual for the recommended settings specific to your crop and combine model.

Grain Handling and Unloading

Efficient grain handling and unloading are vital for maintaining productivity during the harvest season. Before initiating the unloading process, carefully position the combine in a safe and level location, ensuring ample clearance for the unloading auger and the receiving vehicle. Engage the parking brake and shut down the header to prevent accidental operation. Visually inspect the grain tank and unloading auger for any obstructions or potential hazards. A quick inspection can prevent a major headache.

Slowly engage the grain tank unloading system, monitoring the auger for smooth and consistent grain flow. Avoid overloading the auger, as this can cause blockages and potentially damage the unloading mechanism. Pay close attention to the grain stream, ensuring that it is directed accurately into the receiving vehicle. Adjust the unloading auger spout as needed to minimize grain spillage and ensure even filling. During the unloading process, frequently check the grain tank level to avoid overfilling.

After unloading is complete, disengage the unloading system and allow the auger to empty completely. Thoroughly inspect the grain tank and unloading auger for any remaining grain or debris. Clean the auger and grain tank periodically to prevent the buildup of mold, insects, and other contaminants. Proper grain handling and unloading procedures not only maximize efficiency but also help maintain grain quality and prevent costly losses. Additionally, make sure you are using the proper equipment to move the grain into the bin after unloading.

Field Operation Techniques

Mastering effective field operation techniques is paramount for achieving optimal harvesting efficiency and minimizing grain loss. Start by planning your harvesting pattern strategically, considering factors such as field shape, terrain, and prevailing wind direction. Harvesting against the wind can help reduce grain loss by preventing lightweight kernels from being blown away from the header. In sloping fields, contour harvesting, following the natural contours of the land, can improve stability and prevent the combine from tilting excessively. Always prioritize safety when operating on uneven terrain.

Maintaining a consistent ground speed is crucial for achieving uniform harvesting performance. Adjust your ground speed based on crop density, moisture content, and the capacity of the combine. Excessive ground speed can lead to header losses and uneven threshing, while insufficient ground speed reduces efficiency and increases fuel consumption. Monitor the combine's engine load and adjust ground speed accordingly to maintain optimal performance. Pay attention to changes in crop conditions throughout the day and make adjustments to ground speed and combine settings as needed.

Finally, remain vigilant for potential obstacles and hazards in the field. Scan the area ahead for rocks, ditches, irrigation equipment, and other obstructions that could damage the combine or pose a safety risk. Be aware of overhead power lines and maintain a safe distance to prevent electrical accidents. Regularly inspect the combine for any signs of wear and tear or mechanical problems. By employing sound field operation techniques and maintaining a proactive approach to maintenance, you can maximize harvesting efficiency, minimize downtime, and ensure a safe and productive harvesting season. This approach will yield the best results in your field.

Maintenance

Scheduled Maintenance Intervals

Adhering to the recommended maintenance schedule is paramount for ensuring the longevity and optimal performance of your John Deere 995 tractor. Neglecting these intervals can lead to premature wear, reduced efficiency, and potentially costly repairs down the line. Consult the comprehensive maintenance chart provided in the full manual for specific intervals based on operating hours or calendar time, whichever comes first. Regular checks and servicing of key components, as outlined in the schedule, will help prevent unexpected breakdowns and maintain the tractor's overall value. Remember that operating conditions, such as dusty environments or heavy workloads, may necessitate more frequent maintenance.

It's crucial to keep accurate records of all maintenance performed on your John Deere 995. This log serves as a valuable resource for tracking service history, identifying potential problem areas, and demonstrating proper care to future buyers, should you ever decide to sell the tractor. Consider using a dedicated maintenance logbook or a digital tracking system to record dates, types of service performed, parts replaced, and any observations made during the maintenance process. Detailed records will not only help you stay organized but also provide valuable insights into the tractor's performance trends over time. Furthermore, this diligent record-keeping can be invaluable when diagnosing issues or seeking warranty assistance, providing concrete evidence of proper maintenance practices.

Lubrication Points and Procedures

Proper lubrication is essential for minimizing friction, reducing wear, and extending the life of moving parts on your John Deere 995 tractor. Identifying and lubricating all grease fittings and lubrication points according to the manufacturer's recommendations is critical. Use the correct type of grease, as specified in the manual, for each application. Over-greasing can be just as detrimental as under-greasing, potentially damaging seals and attracting dirt and debris. Always wipe grease fittings clean before and after applying grease to prevent contaminants from entering the system.

Pay close attention to the lubrication of critical components such as the steering linkage, front axle pivot points, wheel bearings, and PTO shaft. These areas are subject to high stress and require frequent lubrication to ensure smooth operation and prevent premature wear. For less frequently used lubrication points, consider applying a small amount of penetrating oil before greasing to help loosen any existing grease and facilitate better distribution of the new grease. Remember to consult the lubrication chart in the full manual for detailed information on the location of all grease fittings and the recommended lubrication intervals. Neglecting these lubrication points can lead to excessive friction, increased wear, and potential component failure, resulting in costly repairs.

Belt Inspection and Replacement

Belts are a vital part of your John Deere 995 tractor's power transmission system, and their condition directly affects the performance of various components, including the cooling fan, alternator, and power steering pump. Regularly inspect all belts for signs of wear, such as cracks, fraying, glazing, or missing chunks. A worn belt can slip, causing reduced performance or even failure of the driven component. Check belt tension to ensure it is within the specified range, as excessive or insufficient tension can also lead to premature belt wear and damage to the driven components.

When replacing a belt, always use a genuine John Deere replacement part or an equivalent high-quality belt that meets the manufacturer's specifications. Using an inferior belt can result in poor performance and a shorter lifespan. Before installing a new belt, inspect the pulleys for wear or damage, as worn pulleys can accelerate belt wear and reduce belt life. Ensure the pulleys are properly aligned to prevent the belt from running off-center, which can also lead to premature wear and failure. After installing a new belt, check the tension after a few hours of operation and readjust if necessary. Proper belt maintenance ensures reliable power transmission and prevents costly downtime.

Filter Replacement (Air, Fuel, Oil)

Regular filter replacement is crucial for maintaining the cleanliness of vital fluids and preventing contaminants from entering critical engine components. Air filters protect the engine from dust and debris, fuel filters remove impurities from the fuel, and oil filters trap contaminants in the engine oil. Neglecting filter replacement can lead to reduced engine performance, increased wear, and potential engine damage. Always follow the recommended replacement intervals outlined in the manual, and consider more frequent replacement if operating in dusty or dirty conditions.

When replacing filters, use genuine John Deere filters or equivalent high-quality filters that meet the manufacturer's specifications. Ensure the filters are properly installed and sealed to prevent leaks or bypass of unfiltered fluid. For oil filter replacement, pre-fill the new filter with clean engine oil before installation to minimize the time the engine runs without oil pressure. Properly dispose of used filters according to local regulations. Regular filter replacement is a simple and cost-effective way to protect your engine and extend its lifespan.

Cooling System Maintenance

The cooling system plays a vital role in regulating engine temperature and preventing overheating. Regular maintenance of the cooling system is essential for ensuring optimal engine performance and preventing costly engine damage. Check the coolant level regularly and add coolant as needed to maintain the proper level. Inspect the radiator and cooling fins for debris and clean them as necessary to ensure proper airflow.

Periodically flush and refill the cooling system with fresh coolant according to the manufacturer's recommendations. Use the correct type of coolant, as specified in the manual, and mix it with distilled water in the proper ratio. Inspect the hoses and clamps for leaks or damage and replace them as needed. A pressure test of the cooling system can help identify leaks that are not readily visible. Proper cooling system maintenance is essential for preventing overheating, which can lead to serious engine damage.

Troubleshooting

Engine Problems (Starting, Overheating, Power Loss)

Diagnosing engine problems on a John Deere 995 can be a systematic process, but crucial for efficient operation. If the engine fails to start, begin by checking the fuel supply. Ensure the fuel tank has an adequate level of clean diesel fuel, and the fuel shut-off valve is open. Inspect the fuel lines for any kinks or blockages that might restrict fuel flow to the engine. Next, verify the battery condition; a weak battery will prevent the starter motor from engaging properly. Clean the battery terminals and check the battery voltage with a multimeter. Finally, ensure that the safety interlock switches are properly engaged; these switches prevent the engine from starting if the operator isn't present or if certain systems are in an unsafe position.

Engine overheating is another common issue that demands immediate attention to prevent significant damage. First, check the coolant level in the radiator and expansion tank. Low coolant levels can indicate a leak in the cooling system, which must be addressed promptly. Inspect the radiator fins for debris, such as chaff or straw, which can obstruct airflow and reduce cooling efficiency. Ensure the radiator cap is properly sealed to maintain system pressure. Also, check the condition of the water pump belt; a loose or damaged belt can hinder the water pump's ability to circulate coolant effectively. Last but not least, check that the thermostat is functioning properly because a faulty thermostat can severely restrict coolant flow, leading to overheating.

Loss of engine power can significantly impact the combine's performance during harvest. Start by inspecting the air filter; a clogged air filter restricts airflow to the engine, resulting in reduced power output. Check the fuel filter for contamination or blockages that might impede fuel delivery. Inspect the fuel injectors for proper spray patterns; clogged or malfunctioning injectors can lead to incomplete combustion and power loss. In addition, evaluate the condition of the turbocharger (if equipped); a failing turbocharger will significantly reduce engine power. Finally, make sure to check the compression of the cylinders. Low compression indicates worn piston rings or valves, which will require internal engine repair.

Header Malfunctions (Feeding, Clogging)

Effective header operation is crucial for efficient harvesting. Feeding problems, where the crop fails to enter the header smoothly, can result from several factors. Start by checking the height and angle of the header in relation to the crop. Improper header adjustment can cause the crop to bunch up or be missed entirely. Inspect the condition of the cutter bar knives; dull or damaged knives will not cut cleanly, leading to uneven feeding. Ensure that the reel speed is properly synchronized with the ground speed; an improperly adjusted reel can either throw the crop away from the header or cause it to bunch up. Furthermore, check the condition of the feeder chains and sprockets; worn or damaged chains and sprockets can cause erratic feeding.

Header clogging, particularly in heavy or damp crops, can significantly slow down harvesting operations. Ensure that the slip clutch on the header drive is properly adjusted to prevent excessive torque buildup. Inspect the auger or feeding mechanism for obstructions, such as rocks or foreign objects, that might impede crop flow. Check the clearance between the auger flighting and the header floor; insufficient clearance can cause the crop to pack up and clog the system. Additionally, make sure that the stripper bars are in good condition; damaged or missing stripper bars can allow the crop to wrap around the auger, leading to clogging. It’s vital to stop the machine and remove the clog if it occurs. Ignoring the issue can result in equipment damage and more costly repairs.

Threshing Issues (Grain Loss, Damage)

Efficient threshing is the key to maximizing grain yield while minimizing damage. Excessive grain loss at the threshing unit often indicates improper machine settings. Start by adjusting the concave clearance; too wide a clearance allows grain to pass through unthreshed, while too narrow a clearance can damage the grain. Check the cylinder or rotor speed; excessive speed can shatter the grain, while insufficient speed leaves it unthreshed. Inspect the condition of the threshing elements, such as the cylinder bars or rotor paddles; worn or damaged elements reduce threshing efficiency. Make sure that the crop is evenly distributed across the width of the threshing unit. Uneven distribution causes sections of the system to over or under load.

Grain damage during threshing is a common concern, particularly with delicate crops. Reduce the cylinder or rotor speed to minimize impact on the grain. Increase the concave clearance to provide more space for the grain to be threshed without being crushed. Ensure that the rasp bars or threshing elements are not excessively worn or aggressive; replace them if necessary. Reduce the feed rate to the threshing unit; overloading the system can increase the likelihood of grain damage. It is also crucial to monitor grain moisture content. Threshing grain that is too dry or too wet can increase the risk of damage.

Cleaning System Problems

The cleaning system is responsible for separating grain from chaff and other debris. Inefficient cleaning can lead to grain loss or reduced grain quality. Start by adjusting the fan speed; insufficient fan speed allows chaff to remain in the grain, while excessive fan speed blows grain out of the machine. Check the sieve openings; the upper sieve removes larger debris, while the lower sieve separates smaller particles. Ensure that the sieve agitation mechanism is functioning properly; lack of agitation allows the sieves to become clogged. Check that the air ducts and channels within the cleaning system are free of obstructions that might impede airflow. Furthermore, if there are grain loss monitors, use them for troubleshooting to determine precisely where losses are occurring, guiding adjustments more efficiently.

Electrical System Diagnostics

The electrical system is vital for controlling various functions of the John Deere 995. Electrical malfunctions can range from simple fuse failures to complex wiring issues. Begin by checking the fuses for blown circuits; replace any blown fuses with the correct amperage rating. Inspect the wiring harness for damaged or corroded wires; repair or replace damaged wires to ensure proper electrical continuity. Check the condition of the connectors and terminals; clean and tighten loose or corroded connections. Use a multimeter to test the voltage and continuity of electrical circuits. Make sure to have the wiring diagram on hand for testing continuity to determine if the wires are broken. Additionally, use the appropriate diagnostic tools to read and interpret error codes generated by the machine's computer system; these codes can provide valuable insight into the nature of the electrical problem.

Repair

Engine Repair Procedures

The heart of your John Deere 995 is its engine, and maintaining it is crucial for optimal performance. Before undertaking any engine repair, ensure the tractor is safely parked on a level surface, the engine is cool, and the battery is disconnected. Always consult the engine's specific service manual for detailed torque specifications and procedures, as variations exist between engine models. Properly identifying the root cause of the engine malfunction is paramount before initiating repairs. Symptoms like excessive smoke, unusual noises, or decreased power can provide valuable clues.

When disassembling the engine, meticulous organization is key. Label all parts clearly and store them in designated containers to avoid confusion during reassembly. Pay close attention to the condition of critical components such as the cylinder head, pistons, and connecting rods. Thoroughly inspect these parts for cracks, wear, or damage. Use appropriate measuring tools, such as micrometers and dial bore gauges, to verify that components meet factory specifications. Replacing worn or damaged parts with genuine John Deere components ensures optimal engine performance and longevity.

Reassembly requires precision and adherence to torque specifications. Use a calibrated torque wrench to tighten all fasteners to the specified torque value. Proper lubrication is also essential during reassembly. Apply engine oil to all moving parts to prevent friction and wear during the initial start-up. Once the engine is reassembled, perform a thorough leak check to ensure there are no oil or coolant leaks. Monitor the engine's performance closely during the initial break-in period.

Transmission and Drivetrain Repair

The transmission and drivetrain are responsible for transferring power from the engine to the wheels, making their proper function essential. Diagnosing transmission problems can be challenging, requiring careful observation and analysis. Symptoms such as slipping gears, unusual noises, or difficulty shifting can indicate a problem within the transmission. Before disassembling the transmission, thoroughly clean the exterior to prevent contaminants from entering the internal components. Document the location of all components during disassembly for ease of reassembly.

Inspect the gears, bearings, and synchronizers for wear or damage. Replace any worn or damaged components with genuine John Deere parts. When replacing bearings, ensure they are properly seated and lubricated. Pay close attention to the condition of the seals and gaskets. Replace any seals or gaskets that are cracked, worn, or damaged to prevent leaks. The drivetrain includes the axles, differentials, and final drives. Regularly inspect these components for wear, damage, or leaks.

Reassembly of the transmission and drivetrain requires careful alignment and proper torque specifications. Use a torque wrench to tighten all fasteners to the specified torque value. After reassembly, perform a thorough leak check to ensure there are no oil leaks. Test the transmission and drivetrain under various operating conditions to ensure proper function. If you encounter any difficulties during reassembly or testing, consult the service manual or a qualified technician.

Hydraulic System Repair

The hydraulic system powers many of the John Deere 995's functions, including the steering, brakes, and implements. Maintaining a clean and well-functioning hydraulic system is essential for safe and efficient operation. Hydraulic system problems can manifest in various ways, such as slow or erratic movement of implements, weak steering, or noisy operation. Before attempting any hydraulic system repairs, relieve the pressure in the system by following the procedures outlined in the service manual. Cleanliness is paramount when working with hydraulic components to prevent contamination.

Inspect the hydraulic hoses, lines, and fittings for leaks, cracks, or damage. Replace any damaged components immediately. Check the hydraulic pump for wear or damage. A worn or damaged pump can cause a decrease in hydraulic pressure and performance. Inspect the hydraulic cylinders for leaks, dents, or corrosion. Repair or replace any damaged cylinders. Test the hydraulic system pressure using a pressure gauge. Compare the measured pressure to the specifications in the service manual.

When reassembling the hydraulic system, use new O-rings and seals to prevent leaks. Ensure all fittings are properly tightened to the specified torque value. After reassembly, bleed the air from the hydraulic system to ensure proper operation. Test all hydraulic functions to verify that they are working correctly. Regularly check the hydraulic fluid level and condition. Replace the hydraulic fluid and filter according to the manufacturer's recommendations.

Electrical System Repair

The electrical system provides power to various components of the John Deere 995, including the starting system, lighting, and instruments. Proper maintenance of the electrical system is crucial for reliable operation. Electrical problems can range from simple issues like a blown fuse to more complex problems like a faulty wiring harness. Before working on the electrical system, disconnect the battery to prevent electrical shock or damage to components. Use a multimeter to test circuits for voltage, continuity, and resistance.

Inspect the wiring harness for damage, such as frayed wires, cracked insulation, or corroded connectors. Repair or replace any damaged wiring. Check the fuses and circuit breakers for proper operation. Replace any blown fuses or tripped circuit breakers. Test the battery to ensure it is holding a charge. A weak battery can cause starting problems and other electrical issues. Inspect the alternator or generator for proper output. A faulty alternator or generator can prevent the battery from charging.

When reassembling the electrical system, ensure all connections are clean and tight. Use dielectric grease on all electrical connections to prevent corrosion. Route the wiring harness properly to prevent chafing or damage. Test all electrical functions to verify that they are working correctly. If you encounter any electrical problems that you cannot resolve, consult a qualified electrician. Proper grounding is essential for the safe and reliable operation of the electrical system.

Header and Threshing Mechanism Repair

The header and threshing mechanism are responsible for harvesting and separating the grain from the plant. Proper maintenance of these components is essential for efficient harvesting. Problems with the header and threshing mechanism can result in grain loss, reduced harvesting speed, or damage to the machine. Before attempting any repairs, ensure the header is safely lowered and supported. Clean the header and threshing mechanism thoroughly to remove any debris or buildup.

Inspect the header knives, sickle sections, and guards for wear or damage. Replace any worn or damaged components. Check the feeder house chains and sprockets for wear or damage. Adjust the chain tension as needed. Inspect the threshing cylinder bars and concaves for wear or damage. Replace any worn or damaged components. Check the sieves and cleaning fan for proper operation. Adjust the sieve settings and fan speed as needed.

When reassembling the header and threshing mechanism, ensure all components are properly aligned and tightened. Lubricate all moving parts according to the manufacturer's recommendations. Test the header and threshing mechanism to verify that they are working correctly. Regularly inspect and maintain these components throughout the harvesting season to prevent problems. Consult the service manual for detailed instructions on adjusting and maintaining the header and threshing mechanism.

Parts Information

Exploded Views and Parts Identification

Understanding the components of your John Deere 995 is crucial for effective maintenance and repair. Exploded views, meticulously detailed diagrams showcasing the tractor's assemblies and individual parts, are invaluable resources. These diagrams offer a visual representation of how each part fits together within the larger system. By studying these views, you can easily identify the specific part you need, understand its relationship to surrounding components, and gain insight into the overall construction of the machinery.

Beyond simply identifying the parts, exploded views often include part numbers directly adjacent to the illustrated component. This direct association between the visual representation and the official part number significantly reduces the risk of ordering the wrong replacement. Furthermore, these diagrams serve as a guide during reassembly, ensuring that parts are installed correctly and in the proper sequence. Incorrect reassembly can lead to malfunctions and further damage, making the exploded view an indispensable tool for any John Deere 995 owner or technician.

The meticulous detail included in these diagrams isn't limited to just the major assemblies. Exploded views frequently cover even the smallest components, such as fasteners, seals, and O-rings. These seemingly insignificant parts are often critical to the proper functioning of the overall system. Identifying and replacing worn or damaged small parts can prevent larger, more costly repairs down the line. Remember to always consult the exploded views for your specific model and serial number, as slight variations may exist across different production runs.

Parts Ordering Information

Once you've identified the required part using the exploded views, the next step is to procure it. John Deere offers a comprehensive network of authorized dealerships that are the primary source for genuine John Deere parts. Purchasing from an authorized dealer ensures that you receive a part specifically designed for your John Deere 995, guaranteeing proper fit, function, and durability. Dealers possess the knowledge and resources to assist you in confirming the correct part number and navigating any compatibility issues.

When contacting your local John Deere dealer, be prepared to provide them with the model number of your tractor (995) and the serial number. This information is crucial for accurate part identification, especially since there may be subtle variations within the 995 model series. The serial number pinpoints the exact production date and specific configuration of your machine. Additionally, clearly communicate the part number you've identified from the exploded view and briefly describe the part's location and function within the tractor.

In addition to local dealers, many authorized John Deere parts retailers operate online. These online platforms offer convenience and accessibility, allowing you to search for parts and place orders from the comfort of your own workshop. However, exercise caution when purchasing parts from unofficial sources or third-party vendors. Non-genuine parts may not meet John Deere's stringent quality standards and could potentially compromise the performance and longevity of your tractor. Always prioritize genuine John Deere parts for optimal results.

Diagrams

Diagrams are essential visual aids for understanding the various systems and components within your John Deere 995. These diagrams go beyond the exploded views, often illustrating electrical circuits, hydraulic systems, and fuel delivery pathways. By studying these diagrams, you can gain a deeper understanding of how these systems function and troubleshoot potential problems more effectively. Learning to interpret these diagrams is a valuable skill for any tractor owner or mechanic.

Electrical diagrams, for example, depict the wiring harness, switches, relays, and various electrical components of the tractor. These diagrams enable you to trace circuits, identify faulty wiring, and diagnose electrical issues such as starting problems or lighting malfunctions. Hydraulic diagrams illustrate the flow of hydraulic fluid through the system, highlighting pumps, valves, cylinders, and hoses. Understanding the hydraulic system's operation is crucial for diagnosing issues related to lifting, steering, or other hydraulically powered functions.

Furthermore, fuel system diagrams provide insight into the path of fuel from the tank to the engine. These diagrams can help you identify fuel leaks, diagnose fuel delivery problems, and ensure proper fuel filtration. Many diagrams also include troubleshooting tips and diagnostic procedures related to the specific system they represent. Use these resources in conjunction with the service manual for a comprehensive understanding of your John Deere 995 and its various systems. Regular review of these diagrams can prevent many future issues from taking place.

Storage

Preparing for Storage

Preparing your John Deere 995 for storage is a crucial step in ensuring its longevity and reliable performance for years to come. Neglecting this process can lead to a multitude of issues, including corrosion, fuel degradation, and component seizing. A thorough preparation routine minimizes these risks and sets the stage for a hassle-free start-up when you're ready to put your tractor back to work. This involves a detailed inspection of the machine, addressing any immediate maintenance needs, and implementing protective measures to shield it from the elements and potential damage during the storage period. By investing the time and effort upfront, you will be rewarded with a tractor that is ready to perform when you need it most.

The first step is to thoroughly clean the tractor, removing any dirt, mud, and debris that may have accumulated during operation. Pay particular attention to the engine compartment, radiator, and undercarriage, as these areas are prone to collecting contaminants. Washing the tractor not only improves its appearance but also helps to prevent corrosion by removing corrosive substances. After washing, ensure the tractor is completely dry before proceeding to the next steps. Moisture trapped in crevices can accelerate rust formation, so take the time to properly dry all surfaces, potentially using compressed air to reach difficult areas.

Next, service the engine oil and filter. Used engine oil contains acids and contaminants that can corrode engine components during storage. Replacing the oil and filter with fresh fluids will protect the engine from internal corrosion. Consider using a storage-specific oil additive designed to further inhibit corrosion and protect internal parts. Drain the fuel tank completely or fill it to the brim with treated fuel. A nearly empty tank will allow condensation to form, leading to water accumulation and potential rusting within the tank. A full tank with treated fuel will prevent these issues and ensure the fuel remains stable during storage.

Remove the battery and store it in a cool, dry place. Connect the battery to a trickle charger to maintain its charge during the storage period. This will prevent sulfation and extend the battery's lifespan. Alternatively, disconnect the battery cables to prevent parasitic drain. Grease all lubrication points, including bearings, linkages, and pivot points. Fresh grease will protect these components from corrosion and ensure smooth operation when the tractor is put back into service. Check and inflate tires to the recommended pressure. This will prevent the tires from developing flat spots during storage. Finally, thoroughly inspect the tractor for any leaks, damage, or wear and tear. Address any issues before storing the tractor to prevent them from worsening during storage.

Storage Location

The choice of storage location can significantly impact the condition of your John Deere 995 after a prolonged period of inactivity. Ideally, the tractor should be stored indoors, in a dry, well-ventilated building. This will protect it from the elements, including rain, snow, sun, and wind, all of which can contribute to corrosion, fading, and damage. If indoor storage is not possible, choose a location that is sheltered from direct sunlight and extreme weather conditions. Covering the tractor with a waterproof and breathable cover can provide additional protection from the elements. Ensure the cover is properly secured to prevent it from blowing off in strong winds.

Avoid storing the tractor in areas with high humidity or near sources of moisture, as this can accelerate corrosion. Also, keep the tractor away from areas where rodents and insects are likely to nest, as these pests can cause significant damage to wiring, hoses, and other components. Consider using rodent repellents and insect traps to deter pests from entering the storage area. Prepare the storage surface. Placing the tractor on a concrete or paved surface is preferable to storing it directly on the ground, as this will prevent moisture from wicking up into the machine. If storing the tractor on the ground is unavoidable, place it on wooden planks or gravel to elevate it slightly and improve drainage. Securing the area around the storage location can prevent theft or vandalism.

Post-Storage Preparation

Before putting your John Deere 995 back to work after storage, it's essential to perform a thorough inspection and preparation routine. This will ensure the tractor is in optimal condition and ready to perform reliably. First, remove the tractor cover, if used, and visually inspect the machine for any signs of damage or corrosion. Check the tires for proper inflation and inspect them for cracks or weathering. Reinstall the battery and ensure the connections are clean and secure. If the battery was stored separately, allow it to fully charge before attempting to start the engine.

Check all fluid levels, including engine oil, coolant, hydraulic fluid, and transmission fluid. Top off any fluids as needed. Inspect all belts and hoses for cracks, wear, or damage. Replace any components that are showing signs of deterioration. Check the air filter and clean or replace it as necessary. Start the engine and allow it to warm up gradually. Listen for any unusual noises or vibrations. Monitor the gauges to ensure all systems are functioning properly. Engage all controls and check their operation. Ensure the brakes, steering, and hydraulics are working smoothly and efficiently. Once the engine has reached operating temperature, check for any leaks. Address any leaks immediately to prevent further damage.

Finally, perform a test run to ensure the tractor is operating correctly. Check the performance of all implements and attachments. Monitor the engine temperature and oil pressure. If you notice any issues, consult your John Deere 995 operator's manual or contact a qualified service technician for assistance. By following these post-storage preparation steps, you can ensure your tractor is ready to provide years of reliable service.