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Joanna
07 August 2020 / Published in REGENERATION, TRAVEL FINAL DRIVE REPAIR

JCB final drive cracked flange

For many years we have been observing a problem with cracking housings and rings attaching the hydromotor to the frame of JCB excavators. In which models do the casings break most often? First of all in: 8016, 8025, 8045, 8060. We have already described this problem on our blog. But it is still valid, because they often come to us with a broken flange final drives. Therefore, it is worth remembering what to do in this situation.

Description of the problem

Final drive cracked flange: The reason for this damage is the track’s wheel base being too long. The track tensioning piston is too long and often causes the metal plate that fixes the hydromotor to the bend frame to bend. There is no one hundred percent solution to the problem. But you can prevent it or significantly reduce the time in which it occurs. To avoid this, operators should be advised against the consequences of turning the machine sharply on hard surfaces. Only then do such oblique stresses occur which, in the case of other machines, cause the track to fall, the drive wheel to quickly wear off. In JCB, however, the deflection of the mounting plate, which literally cuts us the entire mounting ring separating it from the driving motor housing.

Remember that this type of damage can be removed. It is possible to repair a cracked housing, but welding these elements will not bring any results. Unfortunately, the crack will reappear after a short period of time. /final drive cracked flange/

What should you do?

The way out is to unscrew the travel motor with the travel gearbox. Not to unfold it to supply the entire device to a company specializing in regeneration of such damages. While waiting for the repaired device, carefully straighten the bent mounting plate. And check if the tensioning rod works in a straight line in relation to the place of mounting the engine. Clean everything thoroughly and Install the repaired hydromotor. Then enjoy its work and the cheap cost of regeneration compared to buying a new part.

Repairing such damage costs between 15-20% of the price of a new original hydraulic motor. After professionally carried out regeneration, this problem cannot occur again. However, care must be taken that operators do not bend the securing plates.

Tagged under: final drive housing, Flange in JCB machine

What you can read next

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