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Old 04-28-2008, 09:06 PM   #1 (permalink)
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Default Help needed setting tranny bearing preloads

I am assembling my F5M33 FWD transmission completing a rebuild. I am trying to figure out how to set bearing preload/endplay but the manual leaves some ambiguity. If you have done this before I could use some help.

I measured the space between bearing races and the outer tranny case with pieces of solder that crushed while the tranny was torqured to spec. These are my measurements:

Differential: .0435"
Output shaft: .0510"
Intermediate shaft: .0565"
Input shaft: .0545"

My manual says for the F5M33:

Differential case preload .0020"-.0040"
Output shaft preload .0020"-.0040"
Intermediate gear preload .0020"-.0040"
Intermediate gear bearing end play .0004"-.0055"
Input shaft end play 0"-.0020"
Input shaft rear bearing end play 0"-.00354"

What size spacers should I be purchasing?
Also confused about input shaft end play and input shaft bearing end play...which to use?
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Old 04-29-2008, 04:57 PM   #2 (permalink)
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Default Re: Help needed setting tranny bearing preloads

You have the specs and you have the end play. Whats your real question??

-SP
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Old 04-29-2008, 09:15 PM   #3 (permalink)
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Default Re: Help needed setting tranny bearing preloads

I have never done this before and I just don't want to screw it up.

The input shaft, all the gears and synchros are factory new parts with a new quaiffe differential. I have a lot of money and time invested.

The question is: how do I calculate the spacer size?
Do you add the preload value to the measured value for the preload spacer?
example: .0435 + .0020 = .0455 spacer?

These specs below are really throwing me off. How do you pick one spacer to compensate for intermediate gear preload AND intermediate gear bearing end play or one spacer for Input shaft end play AND input shaft rear bearing end play?
I only have one spacer to install for each shaft.

Intermediate gear preload .0020"-.0040"
Intermediate gear bearing end play .0004"-.0055"
Input shaft end play 0"-.0020"
Input shaft rear bearing end play 0"-.00354"
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