The most feared thing about the excavator track is the chain drop! There are many reasons for the derailment, but most of the chains are caused by the looseness of the looseness. This principle is well understood, similar to a bicycle, and the chain is too loose and too long to be particularly easy to drop the chain.

The picture above is a undercarriage track, the chain is tensioned normally, and the sag is also in the proper range. Therefore, it is not easy to drop the chain during normal use. However, the chain is not as tight as possible. If the chain is too tight, the resistance will be too large, the running power loss will be serious, and the symptoms such as walking weakness will be caused.

The chain above is a little looser, but it is also in the normal range, just a metaphor. If the chain is too loose, first check the tensioning cylinder. If the cylinder still has a stroke, you can tighten the chain by buttering. It is generally observed from the guide wheel rail that the guide wheel can continue to extend outwards and whether the cylinder is still in tension. If there is room, butter. If the tensioner is fully extended and the chain is still loose, then check the degree of wear on the chain axle pin. If the wear is too large, the chain will become longer. If the chain is too long, the tension of the chain will not be able to maintain the tension of the chain. Only the chain rail can be replaced, and the chain rail can be replaced.

In addition, damage to the front idler can also cause the chain to be too loose. One of the reasons for the derailment is that the carrier roller is damaged, the track roller is damaged, and the track link assy is damaged. The entry of foreign objects such as stones into the chain is also one of the reasons for derailment. Try not to go backwards while driving, and go backwards and turn the chain when the turn is more likely. Walking backwards means that the sprocket is in front, and in normal times, the idler needs to be in front. This should also be noted! When the soil is soft, the chain can be loosened a little, and the excess rails can be cleaned in time.