rallyace Posted May 24, 2019 Report Posted May 24, 2019 How much play should there be in a 3 speed manual transmission front pinion bearing? I have the back of the transmission off as I am rebuilding the OD unit and the front pinion has some play in it. I cannot feel any roughness or hear anything abnormal. I am not sure if I should replace it or not. The rest of the transmission looks real good and I don't want to get involved with the countershaft needle bearings if I don't have to. Thanks in advance. Quote
Don Coatney Posted May 24, 2019 Report Posted May 24, 2019 The pilot bushing in the end of the crankshaft supports the engine end of the transmission input shaft. 1 Quote
kencombs Posted May 24, 2019 Report Posted May 24, 2019 I don't think I've ever seen a measurement specified for that. UP/Down or the reason mentioned above. As long as there is almost no for/aft play it's good IMO. If it feels good, use it! sounds like the 60s all over again. 1 Quote
Dodgeb4ya Posted May 25, 2019 Report Posted May 25, 2019 With the back 1/2 pulled out of the front case the input shaft loses alignment support from the end of the mainshaft... also causing some input shaft wobble. 1 Quote
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