Troubleshooting One Track Not Moving or Moving Very Slowly on Heavy Equipment

[MikePhua]

If you’re experiencing an issue where one track on your skid steer or tracked machine isn't moving or is moving very slowly, it’s important to act quickly to prevent further damage. This issue can lead to a loss of productivity and potentially costly repairs. In this guide, we’ll discuss the common causes behind this problem and provide step-by-step instructions to help you troubleshoot and resolve the issue.
Common Causes of One Track Not Moving or Moving Slowly
Several factors could be contributing to the problem of one track not moving or moving slowly. Let’s take a look at some of the common causes:

1. Hydraulic System Issues:
   • Hydraulic pressure issues are a leading cause of slow or non-functioning tracks. The hydraulic system is responsible for providing power to the drive motors that control the movement of the tracks. Low hydraulic pressure, air in the system, or a hydraulic fluid leak can result in one track not functioning properly.
     
2. Hydraulic Pump Failure:
   • The hydraulic pump supplies fluid to the drive motor, so if the pump is malfunctioning or failing, it can lead to uneven movement or no movement at all. If one track is slower than the other, this could be a sign that the pump is only partially providing power to the hydraulic motor.
     
3. Drive Motor Issues:
   • The drive motor is responsible for powering the tracks. If it’s malfunctioning, one track may be slower or not move at all. This could be due to a lack of lubrication, internal damage, or worn-out components in the motor.
     
4. Track or Sprocket Problems:
   • A damaged or worn-out track or sprocket can affect the movement of the machine. If there’s debris, dirt, or other material stuck in the track or sprocket, it can create resistance that slows down or prevents movement.
     
5. Uneven Tension in the Tracks:
   • If the tension of the tracks is uneven, one side may be tighter than the other, which could cause one track to move slower or not at all. Track tension should be checked and adjusted regularly to ensure the machine operates efficiently.
     
6. Drive Belt or Chain Issues:
   • If the machine uses a drive belt or chain to connect the motor to the tracks, any wear or damage to the belt or chain can result in one track not functioning properly. A loose or broken belt/chain can prevent the track from moving, or cause it to move sluggishly.
     
7. Clogged or Faulty Valve:
   • The valve that controls the hydraulic flow to the tracks could be clogged or malfunctioning. If the valve is stuck, damaged, or clogged, it can prevent proper hydraulic flow, leading to uneven track movement.
     

Steps to Troubleshoot and Fix the Problem
Once you’ve identified the possible causes, here are the steps to take for troubleshooting and resolving the issue:

1. Check Hydraulic Fluid Levels:
   • Start by inspecting the hydraulic fluid levels in the machine. Low fluid can lead to a lack of pressure, which could cause one track to move slower or not at all. If the fluid is low, refill it to the appropriate level and monitor for leaks.
     
2. Inspect for Hydraulic Leaks:
   • Examine the hydraulic lines, hoses, and fittings for any visible signs of leaks. A hydraulic leak can cause a loss of pressure, which in turn affects the performance of the tracks. If a leak is found, repair it and top off the hydraulic fluid.
     
3. Test Hydraulic Pressure:
   • Use a pressure gauge to check the hydraulic pressure being supplied to the drive motors. If the pressure is low or uneven, the issue may be with the hydraulic pump or control valve. This could require professional servicing.
     
4. Inspect the Drive Motor:
   • If the hydraulic system appears to be working correctly, the drive motor itself may be the issue. Listen for any unusual noises or vibrations from the motor. If the motor is making strange sounds or appears to be struggling, it may need to be repaired or replaced.
     
5. Check the Tracks and Sprockets:
   • Inspect the tracks for debris, wear, or damage. Check the sprockets for wear, rust, or any buildup of material that could create friction. Clean the tracks and sprockets thoroughly, and replace any worn or damaged components.
     
6. Adjust Track Tension:
   • Ensure that the tracks are properly tensioned. If one track is too tight, it can cause resistance, making it harder for the machine to move. If the tension is too loose, it can cause slippage and poor performance. Adjust the track tension according to the manufacturer’s specifications.
     
7. Inspect the Drive Belt or Chain:
   • If your machine uses a drive belt or chain, check it for any signs of wear, fraying, or damage. If you notice any problems, replace the belt or chain immediately to restore proper movement to the tracks.
     
8. Examine the Valve:
   • If the hydraulic flow valve is clogged or malfunctioning, it could prevent proper fluid flow to the tracks. Check the valve for any blockages or damage. Cleaning or replacing the valve can resolve issues related to the hydraulic flow.
     

When to Seek Professional Help
If you’ve followed the troubleshooting steps above and are still unable to identify or fix the issue, it’s time to seek professional assistance. A trained technician can perform more in-depth diagnostics and repairs, especially if the issue is related to the hydraulic pump, drive motor, or internal components.
Additionally, if you’re unsure about how to handle hydraulic components or lack the necessary tools, it’s best to rely on a professional who has the experience and equipment to safely and effectively repair the machine.
Conclusion
One track not moving or moving very slowly is a problem that can significantly affect your machine’s performance. By systematically diagnosing the hydraulic system, inspecting the drive motor, checking the tracks, and testing the hydraulic pressure, you can often identify and resolve the issue. Regular maintenance, including checking fluid levels and track tension, will help prevent future problems and keep your equipment running smoothly.