Once you get the cover off and the gear oil drained you should be able to see anything that is obviously wrong. Metal in the gear oil is a clear sign that you may have wear problems, any side to side movement in the ring gear would point to carrier bearing trouble. Any slack or excess backlash would indicate wear between the pinion and ring gear or the pinion not being shimmed properly. If the ring or pinion gear are knife edged you know you have some serious wear and more than likely need to replace the gear set.


~ Craig
1958 Viking 4400
"The Book of Thor"
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1960 Chevrolet C10
"A Family Heirloom"
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'59 Apache 31, 327 V8 (0.030 over), Muncie M20 4 Speed, GM 10 Bolt Rear... long term project (30 years and counting)

If you don't like driving yourTruck, you won't drive yourTruck..| Living life in the SLOW lane