spur gear trans questions


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Posted by JD [174.59.165.52] on Friday, April 19, 2013 at 09:26:11 :

Just pulled an early spur gear transmission apart to rebuild. Upon inspection, all bearings seem good. No slop in any of them, and PTO mesh looks good. When this transmission is in the truck, in 3rd gear it sounds like gear teeth are chattering,especially under moderate load or when letting off the gas(pretty loud). On the bench, seems like everything is spinning fine. front of smaller gear on the 3rd/ direct gear(part 21-10-78) are a bit hammered on there face. The lower main gear has just the slightest end to end play. Idle gear is good. Is this gear noise commen to all spur gear trannys?. Could their be an adjustmant I am missing in shift forks?Tower seems nice and tite. would apreciate some help on this one. Maybe I am trying to fix something that does not need fixing, but it sure seems to me nose is not normal. John



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