Gehl Boom Chain Adjustment: A Step-by-Step Guide

[MikePhua]

Introduction
The boom chain on a Gehl skid steer loader plays a critical role in lifting and lowering the loader’s boom. Over time, these chains can stretch or wear, leading to issues with boom movement, stability, and performance. Properly adjusting the boom chain is essential to maintain smooth operation and prevent unnecessary wear on the loader’s hydraulic system. This guide provides an overview of how to adjust the boom chain on a Gehl skid steer.
Symptoms of a Loose or Worn Boom Chain

1. Uneven Boom Movement
   • A worn or improperly adjusted boom chain can cause the boom to move unevenly, leading to difficulty in lifting and lowering the loader’s arms.
     
2. Difficulty Lifting Loads
   • If the boom chain is too loose, it can affect the machine’s ability to lift heavy loads. This can reduce the overall lifting capacity and efficiency of the loader.
     
3. Excessive Noise
   • A loose or damaged chain may also produce excess noise during operation, such as rattling or banging, as the chain moves through its tracks.
     
4. Uneven Wear on Other Components
   • An improperly adjusted chain can lead to increased wear on the loader’s hydraulic cylinders, boom, and other related components.
     

Steps to Adjust the Gehl Boom Chain

1. Preparation and Safety
   • Turn off the Engine: Before starting any maintenance or adjustment work, ensure that the engine is turned off and the loader is in a stable position.
     
   • Lift the Boom: Raise the boom to its highest position using the loader's hydraulic controls. This will provide access to the boom chain and ensure you can adjust it safely.
     
   • Block the Tires: Use wheel chocks or blocks to secure the tires and prevent the loader from rolling while you work.
     
2. Locate the Boom Chain and Adjustment Mechanism
   • On most Gehl skid steer models, the boom chain is housed in a track that runs along the sides of the boom arms. You will need to locate the adjustment mechanism, which is usually near the base of the boom.
     
   • Identify the Tensioner: The boom chain tensioner is typically a threaded rod or bolt that can be tightened or loosened to adjust the chain’s tension.
     
3. Loosen the Lock Nut
   • Before adjusting the tensioner, you will need to loosen the lock nut or bolt that holds the tensioner in place. This can be done using a wrench or socket set.
     
   • Caution: Be mindful of the load on the chain. Loosening the lock nut will allow the tensioner to move, but if the chain is under significant tension, take care not to damage the mechanism.
     
4. Adjust the Boom Chain Tension
   • Tightening the Chain: If the boom chain is too loose, tighten the tensioner by turning it clockwise. This will increase the tension on the chain and restore proper boom movement.
     
   • Loosening the Chain: If the chain is too tight or the boom is not moving smoothly, loosen the tensioner by turning it counterclockwise. This will reduce the tension on the chain and prevent excessive stress on the hydraulic system.
     
5. Check Chain Alignment
   • After adjusting the tension, check the alignment of the boom chain. Ensure that the chain is running smoothly within its tracks and that there are no signs of misalignment or binding.
     
   • Test Boom Movement: With the adjustment made, use the loader's hydraulic controls to lift and lower the boom several times to check for smooth operation. The boom should move evenly without excessive noise or resistance.
     
6. Tighten the Lock Nut
   • Once the proper tension is achieved and the boom moves smoothly, tighten the lock nut or bolt to secure the tensioner in place. Be sure to torque the nut to the manufacturer’s specifications to avoid loosening during operation.
     
7. Final Check
   • After completing the adjustment, inspect the boom chain and surrounding components for any signs of wear or damage. Ensure the chain is operating smoothly and that no issues remain.
     

Maintaining the Gehl Boom Chain

1. Regular Inspections
   • Inspect the boom chain regularly for signs of wear, damage, or stretching. If the chain appears to be significantly worn, it may need to be replaced entirely to prevent further issues.
     
2. Lubrication
   • Keep the boom chain well-lubricated to prevent excessive wear and ensure smooth movement. Use the appropriate lubricant recommended by Gehl for your specific loader model.
     
3. Monitor Performance
   • Pay attention to how the boom operates during use. If you notice any issues such as uneven movement, difficulty lifting, or unusual noise, it may indicate a need for further adjustments or maintenance.
     
4. Follow Manufacturer Recommendations
   • Always follow the manufacturer’s guidelines and specifications when adjusting or maintaining the boom chain. This will ensure that the loader operates efficiently and safely.
     

Conclusion
Adjusting the boom chain on your Gehl skid steer is an essential part of maintaining the loader’s performance. By following the steps outlined in this guide, you can ensure that the boom moves smoothly, safely, and efficiently, allowing you to get the most out of your equipment. Regular maintenance and proper adjustments will prolong the life of the machine and prevent costly repairs down the line.