Hey guys! Today, we're diving deep into the John Deere 755A track loader, a machine that has been a workhorse on construction sites and farms for years. We'll cover everything from its specs and features to common problems and how to fix them. Whether you're an owner, operator, or just a fan of heavy machinery, this guide is for you.

Overview of the John Deere 755A Track Loader

The John Deere 755A is a robust and versatile track loader designed for a variety of tasks, including digging, loading, and material handling. Known for its durability and reliability, it has become a favorite among many in the industry. This machine boasts a powerful engine, efficient hydraulics, and a comfortable operator station, making it a valuable asset on any job site. Let's get into the details.

Key Features and Specifications

When it comes to the John Deere 755A track loader, understanding its key features and specifications is crucial for both operation and maintenance. This section provides a detailed look at what makes this machine tick.

• Engine: Typically powered by a John Deere diesel engine, the 755A offers ample power for demanding tasks. The engine's horsepower ranges around 110 hp, providing a good balance between power and fuel efficiency. This ensures that the machine can handle heavy loads without excessive fuel consumption.
• Hydraulic System: The hydraulic system is the heart of the 755A, responsible for powering the loader arms, bucket, and other attachments. With a high-pressure system, it delivers quick and precise movements, enhancing productivity. Regular maintenance of the hydraulic system is essential to prevent leaks and ensure optimal performance.
• Transmission: The transmission system in the 755A is designed for smooth and efficient power transfer. It typically features multiple forward and reverse gears, allowing operators to adjust speed and torque according to the task at hand. A well-maintained transmission ensures smooth operation and extends the machine's lifespan.
• Undercarriage: The undercarriage is the foundation of any track loader, and the 755A is no exception. It consists of tracks, rollers, idlers, and sprockets, all working together to provide traction and stability. Regular inspection and maintenance of the undercarriage are vital to prevent premature wear and tear.
• Operator Station: The operator station is designed for comfort and efficiency, featuring ergonomic controls, a comfortable seat, and good visibility. This allows operators to work for extended periods without fatigue, improving overall productivity. The intuitive layout of the controls makes it easy for operators to learn and use the machine effectively.

Understanding these key features and specifications will help you appreciate the capabilities of the John Deere 755A track loader and ensure that it performs optimally for years to come.

Common Problems and Issues

Like any heavy machinery, the John Deere 755A track loader is prone to certain common problems and issues. Knowing these issues can help you diagnose and address them quickly, minimizing downtime and repair costs.

Hydraulic System Problems

Hydraulic issues are among the most frequent problems encountered with the John Deere 755A. These can range from minor leaks to major failures, affecting the machine's overall performance. Here's what you need to know:

• Leaks: Hydraulic leaks are common and can occur at hoses, fittings, and seals. Regular inspection and timely replacement of worn components are crucial to prevent leaks and maintain hydraulic pressure. Ignoring leaks can lead to decreased performance and potential damage to the hydraulic pump.
• Pump Failure: The hydraulic pump is the heart of the system, and its failure can bring the machine to a standstill. Causes of pump failure include contamination, cavitation, and wear. Regular maintenance, including fluid changes and filter replacements, can help prevent pump failure.
• Cylinder Issues: Hydraulic cylinders are responsible for moving the loader arms and bucket. Issues such as bent rods, damaged seals, and internal leaks can affect their performance. Rebuilding or replacing cylinders may be necessary to restore proper function.

Engine Troubles

Engine problems can significantly impact the performance of the John Deere 755A. These issues can range from simple starting problems to more complex mechanical failures. Here's a breakdown of common engine troubles:

• Starting Issues: Difficulty starting the engine can be due to a variety of factors, including a weak battery, faulty starter motor, or fuel system problems. Checking the battery voltage, inspecting the starter motor, and ensuring proper fuel supply can help diagnose and resolve starting issues.
• Overheating: Overheating can occur due to a clogged radiator, faulty thermostat, or insufficient coolant. Regular cleaning of the radiator, replacing the thermostat, and maintaining the correct coolant level are essential to prevent overheating.
• Loss of Power: A sudden loss of power can indicate a problem with the fuel system, air intake, or engine components. Checking the fuel filters, air filters, and inspecting the engine for signs of damage can help identify the cause of power loss.

Undercarriage Wear

Undercarriage wear is an inevitable issue with track loaders, as the undercarriage is constantly subjected to stress and abrasion. Regular inspection and maintenance are crucial to prolong the life of the undercarriage. Here's what to look for:

• Track Wear: The tracks themselves can wear down over time, reducing traction and stability. Monitoring track wear and adjusting track tension can help extend their lifespan. Replacing worn tracks may be necessary to maintain optimal performance.
• Roller and Idler Damage: Rollers and idlers support the tracks and are prone to wear and damage. Inspecting them regularly and replacing worn or damaged components can prevent further damage to the undercarriage.
• Sprocket Wear: Sprockets drive the tracks and are also subject to wear. Monitoring sprocket wear and replacing them when necessary can ensure proper track drive and prevent slippage.

Knowing these common problems can help you stay ahead of potential issues and keep your John Deere 755A track loader running smoothly.

Repair and Maintenance Tips

Keeping your John Deere 755A track loader in top condition requires regular maintenance and timely repairs. Here are some essential tips to help you keep your machine running smoothly and efficiently.

Regular Maintenance Schedule

A regular maintenance schedule is crucial for preventing major problems and extending the life of your John Deere 755A. Here's a suggested schedule:

• Daily: Check fluid levels (oil, coolant, hydraulic fluid), inspect for leaks, and examine the undercarriage for any signs of damage.
• Weekly: Grease all lubrication points, check track tension, and inspect the air filter.
• Monthly: Change engine oil and filter, inspect hydraulic filters, and check the condition of belts and hoses.
• Annually: Perform a thorough inspection of all systems, including the engine, transmission, and hydraulics. Replace any worn or damaged components.

Hydraulic System Maintenance

Proper hydraulic system maintenance is essential for preventing leaks and ensuring optimal performance. Here are some tips:

• Check Fluid Levels: Regularly check the hydraulic fluid level and add fluid as needed. Use the recommended type of hydraulic fluid to prevent compatibility issues.
• Inspect Hoses and Fittings: Inspect hoses and fittings for leaks, cracks, and wear. Replace any damaged components promptly.
• Change Filters: Change hydraulic filters according to the manufacturer's recommendations. This helps remove contaminants from the system and prevent damage to the pump and cylinders.

Engine Maintenance

Engine maintenance is critical for ensuring reliable performance and preventing costly repairs. Follow these tips to keep your engine running smoothly:

• Change Oil and Filter: Change the engine oil and filter regularly, following the manufacturer's recommendations. This helps remove contaminants and maintain proper lubrication.
• Check Coolant Level: Check the coolant level regularly and add coolant as needed. Use the recommended type of coolant to prevent corrosion and overheating.
• Inspect Air Filter: Inspect the air filter regularly and clean or replace it as needed. A clean air filter ensures proper airflow to the engine and prevents damage from contaminants.

Undercarriage Maintenance

Undercarriage maintenance is essential for prolonging the life of your tracks and reducing downtime. Here are some tips:

• Adjust Track Tension: Adjust track tension regularly to prevent excessive wear and maintain proper traction. Follow the manufacturer's recommendations for track tension settings.
• Inspect Rollers and Idlers: Inspect rollers and idlers for wear and damage. Replace any worn or damaged components promptly.
• Clean Tracks: Clean the tracks regularly to remove debris and prevent excessive wear. This is especially important in muddy or abrasive conditions.

By following these repair and maintenance tips, you can keep your John Deere 755A track loader running smoothly and efficiently for years to come.

Troubleshooting Guide

Even with regular maintenance, you may encounter issues with your John Deere 755A track loader. Here's a basic troubleshooting guide to help you diagnose and address common problems.

Problem: Engine Won't Start

• Possible Causes: Weak battery, faulty starter motor, fuel system problems.
• Troubleshooting Steps:
  • Check the battery voltage and charge if necessary.
  • Inspect the starter motor for damage or wear.
  • Check the fuel level and ensure the fuel shut-off valve is open.
  • Inspect the fuel filter for clogs and replace if necessary.

Problem: Hydraulic System Leaks

• Possible Causes: Worn hoses, loose fittings, damaged seals.
• Troubleshooting Steps:
  • Inspect hoses and fittings for leaks and tighten or replace as needed.
  • Check the hydraulic fluid level and add fluid if necessary.
  • Inspect cylinders and pumps for leaks and repair or replace as needed.

Problem: Loss of Power

• Possible Causes: Clogged air filter, fuel system problems, engine damage.
• Troubleshooting Steps:
  • Inspect the air filter and clean or replace if necessary.
  • Check the fuel filter and replace if necessary.
  • Inspect the engine for signs of damage and consult a mechanic if needed.

Problem: Overheating

• Possible Causes: Clogged radiator, faulty thermostat, low coolant level.
• Troubleshooting Steps:
  • Clean the radiator to remove debris and ensure proper airflow.
  • Check the thermostat and replace if necessary.
  • Check the coolant level and add coolant if necessary.

This troubleshooting guide provides a starting point for diagnosing common problems with your John Deere 755A track loader. Always consult the manufacturer's service manual for detailed instructions and safety precautions.

Conclusion

The John Deere 755A track loader is a reliable and versatile machine that can handle a wide range of tasks. By understanding its features, common problems, and maintenance requirements, you can keep your machine running smoothly and efficiently for years to come. Regular maintenance, timely repairs, and careful operation are key to maximizing the lifespan and performance of your John Deere 755A. So, keep these tips in mind, and you'll be well-equipped to tackle any job with confidence!