Hi

The bearing in the PTU failed, so my workshop sent it for refurbishment. While I was at it, I noticed there is play between the sleeve (LR002746) and the PTU splined wheel. I also don’t see any grease there.
I assume they apply some thick grease before assembly, because this connection is probably not lubricated either by the gearbox oil or the PTU oil.



If I move the quill shaft by hand, dry, placed on the PTU splined wheel without grease, should it move (have play) or should it be tightly fitted?


It now moves noticeably, although the splines at first glance, from my amateur perspective, don't look bad. MY2011 TD4 S Manual
MY2014 Si4 HSE Auto
MY2017 C63S Coupe

Last edited by pporocki on 19th Dec 2024 2:39 pm. Edited 2 times in total

Current status: The workshop is putting it back together without reconditioning the splines. They say the splines are slightly worn but don't qualify for replacement. Unfortunately, we don't have specialists like in the UK here, and even though they repair various gearboxes, they are seeing such PTU for the first time. I assessed this based on photos available online from Bell Engineering and other refurbishers, and the splines look not bad. After applying thick grease to the connection between the front PTU and the sleeve, the play is no longer noticeable. MY2011 TD4 S Manual
MY2014 Si4 HSE Auto
MY2017 C63S Coupe