Shantui Accessories – Idler FAQ!Madagascar Excavator sprocket

Shantui Accessories – Idler FAQ!Madagascar Excavator sprocket

The idler wheel is an important part of the crawler-type construction machinery, such as bulldozers, excavators and other walking systems. The role of the guide wheel is to guide the movement of the track. Together with the tensioning device, it can keep the track to a certain degree of tension, ease the impact from the road when moving forward, and reduce the vibration of the fuselage. The idler is both the idler of the track and the tensioner in the tensioning device.Madagascar Excavator sprocket

However, many machine friends complained that bulldozers and excavators always had problems: the bearing bushings were burnt and damaged. What really happened? Let’s take a look at the reasons why the guide wheel is always damaged!Madagascar Excavator sprocket

The main reason for the increasing wear of the guide wheel shaft and the burning of the sleeve of the sliding bearing is that the lubrication state between the guide wheel shaft and the sleeve of the sliding bearing deteriorates, and the boundary lubrication is gradually transformed into a partial dry friction state. If you don’t pay attention to daily maintenance, this problem will inevitably occur. So what should we do?

All parts that can rotate or slide must be lubricated. Poor lubrication will increase the friction of the transmission surface and cause heat generation. When the temperature reaches a certain critical point, the surface deforms, cracks, melts, and then burns.

Once the bearing bushing is burnt and damaged, it needs to be replaced. So how should the guide wheel be removed and installed?

First, remove a single valve at the place of the grease nipple, release all the grease inside, and then use the bucket to push the guide wheel inward hard to make the track as loose as possible.Madagascar Excavator sprocket

If the excavator is below 150, you need to remove the track pin; if it is above 150, you can directly hook the track off with the bucket. Remember, you must disassemble the single valve, otherwise the crawler will be difficult to disassemble, and even more difficult to install!Madagascar Excavator sprocket

The above is about the guide wheel damage and removal and installation steps, I hope to provide you with some help. If you want to know more accessories information, you can pay attention to the public account “excavator accessories maintenance expert”Madagascar Excavator sprocket