2007 CAT 267B Track Loader Issue: Left Track Turns, Right Track Does Not

[MikePhua]

While using the 2007 CAT 267B track loader, the user noticed that the left track operates normally, but the right track does not turn. This issue typically relates to a malfunction in the track drive system, hydraulic system, or electronic control system, potentially affecting the machine's overall performance.
Possible Causes

1. Hydraulic System Failure
   The track steering is primarily dependent on the hydraulic system. If there is an issue with the hydraulic pump, valves, or hydraulic lines, the right track may not receive adequate hydraulic support and, therefore, may not turn.
   
2. Drive Motor Failure
   Each track drive is powered by an independent drive motor. If the drive motor on the right side is malfunctioning—whether due to internal damage or an inability to receive proper electrical signals—it could result in the right track not turning.
   
3. Electronic Control System Issues
   Modern machinery often utilizes electronic control systems to regulate hydraulic and drive operations. If there is a fault in the electronic control system, such as a disruption in control signals, faulty sensors, or issues with the Electronic Control Unit (ECU), the right track may fail to operate correctly.
   
4. Drive Shaft or Transmission Issues
   A loose coupling or a broken drive chain within the track drive system can also prevent power from reaching one of the tracks, leading to a situation where one track does not turn.
   

Troubleshooting and Solutions

1. Check the Hydraulic System
   Start by inspecting the hydraulic oil level and quality to ensure there is no contamination or insufficient fluid. Then, examine the hydraulic lines for leaks or blockages, especially the ones connected to the right-side drive motor. Use diagnostic tools to check the hydraulic system's pressure and identify any abnormalities.
   
2. Inspect the Drive Motor
   If the hydraulic system appears fine, the next step is to check the right-side drive motor. Examine the electrical connections to ensure the drive motor is receiving proper voltage and control signals. If necessary, replace or repair the motor to restore functionality.
   
3. Inspect the Electronic Control System
   If both the hydraulic and drive motor systems are working properly, check the electronic control system. Look for any fault codes in the control system and verify the operation of sensors and the ECU. If an issue with the ECU is detected, recalibration or replacement may be needed.
   
4. Check the Track Drive System
   Finally, inspect the track drive system to ensure that the coupling and transmission components are not loose or damaged. If any parts are worn or broken, replace them to restore proper power transfer to the track.
   

Conclusion
For the 2007 CAT 267B track loader, the issue of the left track turning while the right track does not is often related to issues within the hydraulic system, drive motor, electronic control system, or track drive components. By systematically checking the hydraulic fluid, drive motor, control system, and transmission, you can accurately diagnose and resolve the problem to ensure the loader operates efficiently.