Vintage CAT overview? Rebuilding advice needed.

[OptimaFan]

Originally Posted by DerbyDan

Do you mean the 'rocking' of the pulley as it moves about over the balls in the diff or a side to side play of the diff once mounting in the housing?

Side to side play when mounted in the housing. the bearings can slide side to side in the transmission housing, as if the bearings are too thin, or the housing too wide internally.