Posted by Bob on April 08, 2019 at 10:14:35 from (64.255.159.199):
In Reply to: Tore into the 4020 posted by SVcummins on April 08, 2019 at 00:17:41:
There's several bearings you are simply NOT going to be able to examine thoroughly without a 100% teardown of the transmission and differential carrier, pretty much down to the bare case.
The RH carrier bearing would be ONE to suspect. (Have to remove the final drive/axle assembly to get to that one.)
Was it making any unusual noises, such as a "cyclic rumble"?
With a bearing cage destroyed, the balls or rollers don't stay evenly spaced and the "center-to-center" distances between the shaft changes a bit as the shafts rotate, typically making some sort of gear noise, and eventually damage.
Did you find any other bearing pieces, or a significant amount of filings in the "sump", or in the filter?
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