Inspection and Repairs of the Deformation of Differential Case

Due to the restrictions of inspection devices, it often overlooked to check the deformation of transmission gearbox differential housing in the repair. In fact, the destruction of certain parts of the mutual positional relationship caused by the deformation of transmission gearbox housing makes great impact on the repair quality of the transmission. Especially for the destruction of the parallelism to the axis of the housing bore, which can significantly reduce the life time. Therefore, it must be checked for each center line of housing bore how is the parallelism.

The not-parallel level between twin-shaft and the center line of housing bore can not be greater than 0. 02mm; Also, the not-parallel level between intermediate shaft and reverse gear shaft should be less than 0.03mm. If the values exceed the above criteria, it needs grinding bearing bores, then make use of the bushing method to repair them. In the inspection process, using special measurement tools to check the three-shaft transmission.

1. The distance between the upper and lower bore axis;

2. The parallel level of the upper and lower bore axis;

3. The distance from the upper bore axis to the upper flat;

4. The flatness of the front and back end surfaces.

Twin-shaft transmission differential case consists of front and rear parts, to check the deformation of a differential case, you should inspect the parallel level of input and output shafts, as well as the flatness of joints connecting front and rear differential cases. To repair the differential case if not reaching the required values.