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February 20, 2023
Komatsu chassis parts - replacement method of idler, Bulldozer Idler Made in China
Idler is an important component in the walking system of large construction machinery such as excavators. It is installed on the track and used to guide the track. Its main function is to guide the correct winding of the track. At the same time, the tensioning device is used to move the idler to adjust the tension of the track. The idler is both the idler of the track and the tensioning wheel in the tensioning device.
Method to replace the excavator idler:
1. Remove the tracks of the excavator first.
Remove a single valve in the place of the butter mouth, put the butter inside, use the bucket to push the guide wheel in, so that the crawler is as loose as possible, if the excavator used is below 150, remove the track pin, if it is more than 150, use the bucket to hook the track down, remember to remove the single valve, otherwise it is not good to remove the track, and it is even more difficult to install.
2. Install the guide wheel.
Idler mounting is the same as general wheel mounting. Use a jack to prop up the excavator, then use a screwdriver to unscrew the screws, remove them, attach new wheels, apply lubricating oil, and complete the installation.
Use a grease gun to inject grease into the grease cylinder through the grease nozzle, so that the piston extends outward to push the tension spring, so that the guide wheel moves left to tighten the track. The tension spring has an appropriate stroke, and the spring is compressed to play a buffering role when the tension force is too large; After the excessive tightening force disappears, the compressed spring pushes the guide wheel to the original position. This can ensure sliding along the track frame to change the track width, ensure the disassembly and assembly of the track, reduce the impact of the walking process, and avoid derailment of the track chain. The damage of the idler assembly is mainly caused by poor lubrication of the idler shaft.Bulldozer Idler Made in China
The above is the replacement method of the guide wheel of the excavator chassis. I hope it can help you. If you want to know more about excavator accessories, you can comment below!Bulldozer Idler Made in China