How to Release the Tracks on a JD 450 Dozer

[MikePhua]

Introduction
Releasing the tracks on a JD 450 dozer is an essential procedure when performing maintenance, repairs, or transporting the equipment. The process requires a thorough understanding of the machine's undercarriage system to ensure that the tracks are safely released without causing damage to the components. This article provides a step-by-step guide on how to release the tracks on a JD 450 dozer.
Step-by-Step Guide to Releasing the Tracks

1. Prepare the Machine
   • Before starting, ensure that the dozer is parked on a flat, level surface to prevent any instability while working on the tracks.
     
   • Turn off the engine and remove the key to ensure the machine is not accidentally powered on during the process.
     
   • Engage the parking brake to secure the dozer in place.
     
2. Locate the Track Tensioning Mechanism
   The JD 450 dozer is equipped with a track tensioning system that adjusts the tightness of the tracks. You will need to locate the tensioning bolts and idler wheels that allow you to adjust the tension before releasing the tracks. These are typically located at the rear or side of the undercarriage.
   
3. Release the Track Tension
   • Using a wrench or suitable tool, loosen the tensioning bolts on both sides of the dozer. This will release the pressure from the tracks and allow them to slacken. Be careful not to loosen the bolts too quickly to avoid causing damage to the tensioning components.
     
   • After loosening the bolts, the tension on the tracks should be reduced, making it easier to release them.
     
4. Lift the Track Idlers
   On the JD 450 dozer, the track idlers are responsible for holding the tracks in place. To release the tracks, you will need to lift the idler wheels off their mounting points. This is typically done by using a jack or a lifting device to raise the idler slightly.
   • Ensure that the idler is lifted just enough to create slack in the track without causing undue stress on the system.
     
5. Remove the Track Guards
   Depending on the model of your JD 450, there may be track guards or covers protecting the tracks. These can obstruct the removal process and should be taken off first. Use a wrench or appropriate tool to remove any bolts securing the track guards in place.
   
6. Detaching the Tracks
   With the tension released and the idler lifted, you can now begin the process of detaching the tracks from the undercarriage. Start by carefully removing the track pins that secure the track links to the rest of the undercarriage system.
   • You may need a track pin removal tool to assist with this step. Make sure to work slowly and methodically to avoid damaging the components.
     
7. Carefully Remove the Tracks
   Once the pins are removed, the tracks should be free to slide off the sprockets and rollers. If needed, use a forklift or lifting device to assist in moving the track off the machine. Be sure to take extra care to prevent any injury or damage to the surrounding parts during this stage.
   
8. Final Checks
   After the tracks are removed, inspect the tracks, idlers, and undercarriage components for any signs of wear or damage. It is a good practice to clean the components and lubricate the necessary parts before reassembly.
   

Conclusion
Releasing the tracks on a JD 450 dozer is a straightforward task if done carefully and methodically. Properly releasing the tracks allows for easier maintenance, repairs, or transport. Always ensure that the necessary safety precautions are followed, and take your time to avoid damaging any components during the process. Regular maintenance of the tracks and undercarriage system will ensure the longevity and reliability of the dozer.