Reply to "Throwout bearing"

bosswrenchMember

Chris, the parts shown appear to have the galling at the bottom of the carrier & the ZF nose. I dab a little grease on the radiused fingers and nose-piece when assembling, but I've never seen galling that bad! Normally, all you see is a polished area where the loaded parts slide on each other. All the moving parts are cast iron and run metal-on-metal with no lubrication except what gets dabbed on during assembly.

The radiused fingers are designed to push on the approximate middle of the sliding throwout bearing carrier, just like rocker arms on a valve. Either debris got caught in between the carrier and ZF nose, or a misalignment somehow occurred. If the nose-piece got loose on its 3 allen bolts, you would have had a massive lube leak, so I dunno. Is it possible the pilot bushing is badly worn?

11/13/153:07 PM

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