Bobcat T750: Troubleshooting and Maintenance Guide

[MikePhua]

Introduction to the Bobcat T750
The Bobcat T750 is a compact track loader known for its versatility, power, and efficiency in a wide range of applications, from construction and landscaping to material handling and excavation. However, like all machinery, the T750 can encounter issues that affect its performance. In this article, we’ll go over common problems experienced by Bobcat T750 owners, focusing on maintenance, troubleshooting tips, and how to keep the machine running smoothly.
Symptoms of Bobcat T750 Problems

1. Engine Power Loss
   • A common issue with the Bobcat T750 is a noticeable loss of engine power. This can make it difficult to operate effectively, especially in demanding tasks such as heavy lifting or pushing.
     
   • Symptoms: The engine runs, but there’s a noticeable lack of power or struggle to climb inclines or lift heavy materials.
     
2. Hydraulic Issues
   • Hydraulic issues are another common problem with the T750. These can range from slow or erratic hydraulic movements to a complete loss of hydraulic power.
     
   • Symptoms: Slow bucket or arm movements, erratic control response, or total hydraulic failure.
     
3. Track and Undercarriage Wear
   • The tracks and undercarriage of the T750 are crucial for maintaining stability and movement. Over time, they may suffer wear, causing the loader to lose traction or experience difficulty moving on uneven terrain.
     
   • Symptoms: Excessive noise, uneven movement, or tracks that are loose or missing teeth.
     
4. Electrical Failures
   • Electrical components, including lights, gauges, or control systems, may fail due to wiring issues, damaged connectors, or fuse problems.
     
   • Symptoms: Dashboard lights malfunctioning, inaccurate readings, or control systems not responding correctly.
     

Common Causes of Problems with the Bobcat T750

1. Fuel System Issues
   • A malfunctioning fuel system can result in engine power loss. Clogged filters, a malfunctioning fuel pump, or dirty injectors can all contribute to poor engine performance.
     
   • Cause: Clogged or dirty fuel filters, failing fuel pump, or contaminated fuel.
     
   • Solution: Replace fuel filters regularly, clean the fuel system, and ensure that fuel is clean and fresh.
     
2. Hydraulic Fluid Contamination
   • Contaminated hydraulic fluid is a common cause of hydraulic system failure. Dirt, debris, and water in the fluid can cause seals to fail or hydraulic components to wear out prematurely.
     
   • Cause: Contaminated hydraulic fluid.
     
   • Solution: Regularly change the hydraulic fluid and use a filtration system to keep the fluid clean. Replace worn seals or faulty components as needed.
     
3. Undercarriage Wear and Tear
   • Tracks and undercarriage components can wear out from heavy use, especially if the loader operates on rough or uneven terrain frequently. This can cause issues like track slippage, uneven movement, or total failure of the tracks.
     
   • Cause: Wear and tear on tracks or undercarriage components.
     
   • Solution: Inspect tracks regularly and replace worn-out components, including rollers, sprockets, and track tensioners. Lubricate the undercarriage frequently to prevent excessive wear.
     
4. Electrical Wiring Problems
   • Faulty wiring, damaged connectors, or a blown fuse can cause electrical problems in the T750. Inconsistent power supply to the control system or dashboard may lead to malfunctions.
     
   • Cause: Damaged electrical wiring or connectors.
     
   • Solution: Inspect the wiring and connectors regularly for any visible damage. Replace any damaged fuses or connectors and ensure the electrical system is properly grounded.
     

Troubleshooting Common Bobcat T750 Problems

1. Addressing Engine Power Loss
   • If the T750 experiences a loss of engine power, check the fuel system first. Ensure that the fuel filters are clean, the fuel pump is functioning properly, and the fuel injectors are not clogged.
     
   • Tip: Always use the recommended fuel type, and replace filters and fuel components at regular intervals to avoid power loss.
     
2. Solving Hydraulic Problems
   • Hydraulic issues can be diagnosed by checking the hydraulic fluid level and ensuring that it’s free of contaminants. If the fluid is clean and at the proper level, but problems persist, inspect the hydraulic pumps, valves, and hoses.
     
   • Tip: If hydraulic components are damaged, replace them immediately to prevent further damage to the system.
     
3. Inspecting Tracks and Undercarriage
   • To maintain proper movement, check the condition of the tracks regularly. Look for wear on the track rollers, sprockets, and chain. Ensure the track tension is correct and adjust as necessary.
     
   • Tip: Keep the undercarriage clean and lubricated to reduce wear and prevent dirt from clogging the system.
     
4. Fixing Electrical Failures
   • Electrical issues can usually be traced to damaged wiring or faulty fuses. Begin by checking the fuses and relays for signs of damage. If the electrical system continues to malfunction, inspect the wiring for any frays or loose connections.
     
   • Tip: Use a multimeter to check for continuity in the electrical circuits. If a faulty wire or component is found, replace it as soon as possible.
     

Preventive Maintenance for the Bobcat T750

1. Regular Fluid Checks
   • Keeping the hydraulic fluid, engine oil, and coolant at the correct levels is essential for preventing issues and ensuring that the machine operates efficiently.
     
   • Tip: Check the fluids before each use and change them according to the manufacturer’s recommended schedule.
     
2. Inspect and Replace Filters
   • Clogged or dirty filters can cause a variety of issues, from fuel problems to poor hydraulic performance. Regularly inspect and replace filters to keep the system clean and free of contaminants.
     
   • Tip: Change fuel, air, and hydraulic filters regularly to avoid performance issues.
     
3. Lubricate the Undercarriage
   • Regular lubrication of the tracks and undercarriage components will help minimize wear and improve performance, especially in challenging working conditions.
     
   • Tip: Lubricate the undercarriage daily or as specified in the owner’s manual to ensure smooth operation.
     
4. Electrical System Checks
   • Regularly check the electrical system for any loose wires, damaged connectors, or faulty fuses. Keeping the electrical system in good condition will help avoid issues with dashboard readings or control malfunctions.
     
   • Tip: Perform visual inspections of the wiring and check for any signs of wear, such as exposed wires or corrosion.
     

Conclusion
The Bobcat T750 is a reliable and powerful machine that can handle a wide variety of tasks. However, like any piece of heavy equipment, it requires proper maintenance and attention to avoid common issues. By keeping the hydraulic fluid clean, inspecting filters, maintaining the undercarriage, and troubleshooting electrical problems, owners can ensure the longevity and performance of their Bobcat T750. Regular preventive maintenance will help avoid major issues and keep the machine running smoothly.