Repairing the Lap Bar Spring on a Case 1840 Skid Steer

[MikePhua]

Understanding the Lap Bar Spring
The lap bar spring in a Case 1840 skid steer is a vital component that ensures the lap bar remains in the upright position when not in use. This spring is typically a gas strut, providing the necessary force to counterbalance the weight of the lap bar. When this spring fails, the lap bar may not stay up, posing potential safety hazards and operational inefficiencies.

Common Causes of Spring Failure
Several factors can lead to the failure of the lap bar spring:

• Wear and Tear: Over time, repeated use can cause the gas strut to lose its pressure, rendering it ineffective.
  
• Corrosion: Exposure to harsh environmental conditions, such as moisture and chemicals, can lead to rust and degradation of the spring.
  
• Mechanical Stress: Sudden impacts or overloading can cause the spring to fail prematurely.
  

Symptoms of a Faulty Lap Bar Spring
Operators may notice the following signs indicating a malfunctioning lap bar spring:

• Lap Bar Drooping: The lap bar fails to stay in the upright position and may fall down unexpectedly.
  
• Difficulty in Operation: Engaging or disengaging the lap bar becomes cumbersome or requires excessive force.
  
• Unusual Noises: Hissing sounds or metallic noises when operating the lap bar can indicate internal issues within the gas strut.
  

Steps to Replace the Lap Bar Spring
Replacing the lap bar spring is a straightforward process that can be accomplished with basic tools:

1. Safety First: Ensure the skid steer is on a flat surface, the engine is off, and the key is removed.
   
2. Locate the Spring: Identify the gas strut connected to the lap bar mechanism.
   
3. Remove the Old Spring: Using appropriate tools, detach the old gas strut from its mounting points.
   
4. Install the New Spring: Align the new gas strut with the mounting points and secure it firmly.
   
5. Test the Operation: Manually operate the lap bar to ensure the new spring functions correctly.
   

Selecting the Right Replacement Spring
When choosing a replacement gas strut, ensure compatibility with the Case 1840 model. The OEM part number for the lap bar spring is 128461A2. Aftermarket options are available and can be considered based on budget and availability.

Preventive Maintenance Tips
To prolong the life of the lap bar spring:

• Regular Inspection: Periodically check the gas strut for signs of wear, corrosion, or leakage.
  
• Cleanliness: Keep the area around the lap bar mechanism free from dirt and debris.
  
• Proper Storage: When the skid steer is not in use, store it in a sheltered environment to protect components from environmental damage.
  

Conclusion
The lap bar spring in a Case 1840 skid steer plays a crucial role in the safe and efficient operation of the machine. Understanding its function, recognizing signs of failure, and performing timely replacements can ensure the longevity of the equipment and the safety of its operators.