Maintaining and Adjusting the Track Adjuster on CAT 955L

The CAT 955L track loader, an essential piece of heavy equipment, is widely recognized for its durability and versatility in construction, excavation, and material handling tasks. One of the most important components of this machine is the track system, which includes the track adjuster. The track adjuster helps maintain the correct tension on the tracks, ensuring the machine runs efficiently. Proper adjustment and maintenance of the track adjuster are crucial for the machine's performance and longevity.

The Role of the Track Adjuster

The track adjuster is responsible for keeping the tracks tight, which ensures smooth operation and reduces the wear and tear on both the tracks and other undercarriage components. When the track adjuster malfunctions or if the tracks are too loose or too tight, it can lead to several issues, including:

• Uneven wear on the tracks.
• Reduced traction.
• Increased strain on the drivetrain and undercarriage.
• Increased risk of track derailment.

Signs of a Problem with the Track Adjuster

Before jumping into the process of adjusting or replacing a track adjuster, it's essential to recognize the signs of trouble. A malfunctioning track adjuster will typically show the following symptoms:

• Excessively Loose Tracks: If the tracks appear loose and sagging, it indicates that the track adjuster is not providing the necessary tension to keep them in place. This can result in inefficient operation and could eventually cause the tracks to slip off.
• Tight or Stiff Tracks: Tracks that are too tight can cause excessive strain on the undercarriage and the drive system. This often results in overheating and rapid wear of the components.
• Unusual Noises: Grinding, squealing, or knocking noises while operating could suggest that the track adjuster is failing or malfunctioning.

Adjusting the Track Tension

Adjusting the track tension on the CAT 955L involves the use of a grease gun to pump grease into the track adjuster, which increases the tension on the tracks. Here is a step-by-step guide on how to perform this maintenance task:

1. Check the Track Condition

Before adjusting the track, inspect the overall condition of the tracks and undercarriage. Ensure that the tracks are in good shape, with no significant wear or damage to the track links, rollers, or sprockets. If the tracks are worn out, they may need to be replaced or repaired before proceeding with the adjustment.

2. Locate the Track Adjuster

On the CAT 955L, the track adjuster is located on the end of the track frame, near the idler. It usually has a grease fitting that can be accessed with a grease gun.

3. Grease the Track Adjuster

Use a grease gun to inject grease into the track adjuster. This will increase the tension on the tracks, making them tighter. Add grease slowly, checking the track tension periodically until it reaches the recommended tightness.

4. Check the Track Tension

Once you’ve added the required amount of grease, check the track tension. The ideal tension for the CAT 955L tracks is generally around 2 inches of sag when the track is lifted off the ground. This can vary depending on the manufacturer’s specifications and the working conditions of the machine.

5. Test the Machine

After adjusting the track tension, run the loader for a short period to ensure that the tracks are functioning smoothly and there are no unusual noises or behaviors. If the tracks are still loose or too tight, further adjustments may be necessary.

When to Replace the Track Adjuster

While adjusting the track tension is a relatively simple task, sometimes the track adjuster itself may fail due to wear and tear or damage. If you find that the track tension cannot be maintained or the grease gun is unable to pump grease into the adjuster, it may be time to replace the track adjuster.

Common signs that indicate the track adjuster needs replacing include:

• Inability to Adjust the Tension: If the track adjuster no longer holds grease or pressure, it may be damaged or worn out.
• Leaking Grease: If there are signs of grease leakage around the adjuster, it could indicate a seal failure or a crack in the adjuster housing.
• Visible Damage: Cracks, dents, or other visible damage to the adjuster housing may indicate that it needs replacement.

Replacing the track adjuster on a CAT 955L can be a more involved process. It typically involves removing the track, detaching the adjuster, and installing a new one. Always consult the machine’s operator manual for specific instructions on replacing the track adjuster.

Preventative Maintenance Tips for Track Adjusters

Proper maintenance is key to prolonging the life of your track adjuster and ensuring optimal performance of your CAT 955L. Here are some helpful tips for maintaining the track adjuster and the track system as a whole:

• Regular Inspections: Check the track condition and adjuster regularly to ensure proper tension and look for signs of damage or wear.
• Keep Grease Clean: When greasing the adjuster, ensure that clean grease is used to avoid contamination. Dirty grease can introduce particles that wear out the seals or internal components of the adjuster.
• Monitor Track Wear: Keep track of how the tracks are wearing. Uneven wear could indicate that the tracks are not adjusted properly or that there is an issue with the undercarriage.
• Proper Lubrication: Ensure that all other moving parts in the undercarriage are properly lubricated to prevent excessive wear and tear.
• Use the Loader Properly: Avoid overloading the loader and ensure that it is not being used in excessively harsh conditions, as this can put extra strain on the track adjuster and other components.

Real-World Example: Managing Track Adjuster Issues

A construction company in Ohio had a CAT 955L that was frequently experiencing issues with loose tracks. Despite regular maintenance and greasing, the tracks continued to sag and caused several instances of derailment, affecting the project timeline. After consulting with a technician, the company discovered that the track adjuster was worn out and unable to maintain pressure. Replacing the adjuster resolved the issue, and the machine operated smoothly thereafter.

In this case, the company had been ignoring early signs of trouble, such as slight sagging and occasional track slippage. If the issue had been addressed sooner, the cost of replacing the track adjuster could have been avoided.

Conclusion

The track adjuster is a vital component of the CAT 955L track loader’s undercarriage system. Proper maintenance, including regular adjustments and inspections, can significantly extend the life of the tracks and prevent costly repairs. By following the recommended procedures for track tension adjustment and being proactive in identifying potential issues, operators can ensure that their equipment runs efficiently and remains in good working condition for years to come.