Issues with Steering Clutches and Brake Bands on 955K

[MikePhua]

The thread discusses issues faced by operators with the steering clutches and brake bands on a 955K, a well-known track loader. The main concerns raised were related to poor steering response and difficulty engaging or disengaging the brake bands, both of which are crucial for the machine’s performance and maneuverability.

---

Symptoms of Steering Clutch Problems
Several users shared their experiences regarding steering clutch issues:

1. Poor Steering Response: One of the most common symptoms was unresponsive steering or difficulty turning, especially when the machine was under load. This could indicate that the steering clutches were not fully engaging.
   
2. Steering Jerks or Slips: Some operators reported that when trying to turn, the machine would jerk or slip instead of turning smoothly. This is often a sign that the clutches are either worn out or not receiving enough pressure.
   
3. Excessive Slippage: Excessive slippage of the clutches could also cause the loader to lose traction or power during operations, which affects the overall efficiency of the machine.
   

---

Symptoms of Brake Band Issues
In addition to the steering clutches, forum members discussed problems with the brake bands:

1. Difficulty Engaging Brakes: Operators mentioned that they had difficulty engaging the brakes, sometimes requiring multiple attempts or additional force to bring the machine to a complete stop.
   
2. Inconsistent Brake Function: Some users reported that the brakes would work intermittently, failing to apply consistent pressure. This could make it difficult to control the machine, particularly when working on inclines or slopes.
   
3. Excessive Wear on Bands: Premature wear on the brake bands was also mentioned, leading to reduced braking effectiveness and the need for more frequent replacements.
   

---

Causes of Steering Clutch and Brake Band Problems
Several potential causes for the problems with the steering clutches and brake bands were identified:

1. Low or Contaminated Hydraulic Fluid: Low fluid levels or contaminated hydraulic fluid can prevent proper engagement of the steering clutches and brake bands. A lack of sufficient fluid pressure can lead to slippage or failure to fully engage.
   
2. Worn Clutches or Brake Bands: Over time, the friction materials on the steering clutches and brake bands wear out, causing slipping and reduced performance. Regular use, especially under heavy load conditions, accelerates this wear.
   
3. Faulty Seals or Gaskets: Leaking seals or gaskets can result in loss of hydraulic pressure, which affects both the steering clutches and the brake bands. This could prevent proper engagement and lead to erratic machine behavior.
   
4. Incorrect Adjustment: Incorrect adjustments of the steering clutches or brake bands can cause issues with engagement. If the clutches or bands are not properly aligned, they may fail to engage or disengage smoothly.
   

---

Steps for Repair and Maintenance
Forum members suggested the following steps for addressing steering clutch and brake band problems:

1. Check Fluid Levels: Start by checking the hydraulic fluid levels and ensuring that the fluid is clean. If the fluid is contaminated, it should be drained and replaced with fresh fluid to restore proper function.
   
2. Inspect and Replace Worn Clutches and Bands: If the clutches or brake bands are worn out, they should be replaced. Users recommended purchasing OEM parts to ensure proper fit and performance.
   
3. Examine Seals and Gaskets: Inspect all seals and gaskets for leaks, as hydraulic pressure loss can cause the clutches or bands to malfunction. Replace any damaged seals to restore pressure integrity.
   
4. Adjust Clutch and Brake Settings: After addressing the wear or fluid issues, ensure that the steering clutches and brake bands are properly adjusted according to the manufacturer’s specifications. This ensures smooth operation and prevents premature wear.
   
5. Perform Hydraulic Pressure Test: Performing a hydraulic pressure test can help identify issues with pressure loss or low fluid, which could be causing the steering or brake problems.
   

---

Forum Members' Experiences
Some forum users shared their personal experiences with repairs and maintenance on the 955K:

1. Regular Maintenance is Key: Many operators stressed the importance of regular maintenance, including fluid checks and replacing worn components before they fail. Preventative maintenance can significantly extend the lifespan of the clutches and brake bands.
   
2. Avoid Overloading the Machine: Overloading the machine puts extra strain on the steering clutches and brake bands, accelerating wear. Operators were advised to avoid exceeding the machine’s rated capacity.
   
3. Professional Assistance: In cases of severe damage or if the repair process seemed too complex, some users recommended consulting with a professional technician to perform more advanced repairs or adjustments.
   

---

Conclusion
Steering clutch and brake band issues on the 955K loader are common problems that can significantly affect machine performance. Causes include low hydraulic fluid, worn parts, faulty seals, and incorrect adjustments. By regularly maintaining the machine, checking fluid levels, and replacing worn components, operators can ensure that the steering and braking systems remain functional and reliable. When necessary, professional assistance should be sought to handle complex repairs or adjustments.