Quote:
Originally Posted by Paul Workman
Seating depth, I can understand. But, greasing the broze bushing (pilot bearing) resulting in THAT particular failure - considering those bearings are impregnated with lube (are they not?) out of the box?
I'm seeing the damaged(?) input shaft and bearing, and not intending to be casting dispersions, but I am a shade skeptical of the diagnosis. I know I'm setting the stage for ridicule, but I'd want to know more...  |
I concur...…..Those impregnated bushings (I use needle bearing bushings on ALL Zs) do not need grease. Matter of FACT...…From a different Pilot Bushing Failure analyzed by ZF.Doc…...
Quote:
Originally Posted by GOLDCYLON
From the ZF.Doc
I replayed the video about twenty times. It sounds like the pilot bushing is
compromised. Install GM fluted pilot bushing (GM P/N 10125896). WARNING: Applying grease in an oil-lite type pilot bushing will cause the pilot bushing to fail within the first one percent of its normal life expectancy. Although very dry looking straight out of the bag, the oil-lite type pilot bushing is infused with enough oil to lubricated the input shaft pilot tip for the entire service life of the clutch. Why not just install a pilot roller bearing instead? When a pilot roller bearing fails, the input shaft pilot tip will be compromised requiring removal of the input shaft for pilot tip repair or replacement of the input shaft.
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I seems to me that rather simple measurements would prove exactly how far the transmission nose penetrated the bearing. Maybe the Transmission was loose from the Bell Housing
It appears that the marks on the Trans tip would indicate the Trans was seated well into the Pilot Bearing
All sorts of possibilities
Ridicule ???? ……….You mean Debate on this Forum
What we have to do is load our photos into our Forum Albums (Registry or CF) so we can see what is going on 
