05-09-2021, 11:30 AM
(This post was last modified: 05-09-2021, 11:40 AM by Robert Leigh.)
It is not unknown for the drive flange on the pinion shaft to be loose on its taper, making a big contribution to backlash. Failure of the key giving loss of drive is the expected outcome. All the taper joints in the system, drive flange and hubs must be tight (keys are there to fix the location,they should not provide drive). If there has been play at the drive flange the CWP should be checked for correct mesh as the pinion is not held in the correct location and rapid wear can be expected during the fault period.