Packard Forum Index » Pre-War (1899-1942)

I suggest replacing the crush sleeve with a new one and then adjusting the pinion pre-load as directed in the service manual. I'd put in another new seal while I was at it.

Transmissions also generate heat, and they will pick up a lot of heat from the engine.

I have gotten away with tightening a slightly loose (Ford) pinion shaft, since doing that further crushes the sleeve, but once it is crushed, it will not return to its previous condition if for any reason the adjustment is loosened. If you need to loosen the adjustment, you'll need a new sleeve. It's best to use a new sleeve anytime an adjustment is needed. It's important not to over tighten when making adjustments. The sleeve can crush, but it cannot rebound.