Re: bull pinion slop

Posted by chris heinzle on July 17, 2007 at 05:47:31 from (164.119.246.190):

In Reply to: Re: bull pinion slop posted by Harold Hubbard on July 17, 2007 at 04:04:33:

I actually have one side completely apart already, bull gear and axle shaft out, bull pinion and cage out. I guess my question not one of disassembly but rather where the side slop was coming from.

As Bob said, there are 2 bearings in the bull pinion cage. The outer one holds the pull pinion itself. The inner one doesnt hold the bull pinion, but rather it holds one end of the differential. The splines inside the differential, in turn, hold the inner end of the bull pinion. Now, if theres slop in the splines, or if the differential bevel gear can move inside the differential case, there ends up being slop in the other end of the bull pinion.

Regarding when bearings are considered bad, how much 'looseness' can one live with? I have measured the side slop in some bearings, and they range from .008 to .020. Im thinking that .008 in the axle shaft bearings is fine, but .020 in the pull pinion bearings is not. Bearing slop that allows a gear to pretty much move sideways, like the bull gear, shouldnt be much of an issue, as long as the gears stay aligned (shafts stay parallel) with each other.

Replies:

• Re: bull pinion slop D Slater 08:45:49 07/17/07 (0)

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