Slop in Input Shaft after rebuild? Help

[michaelmiller85]

So i rebuilt my 5spd transmission. IN the process a shim escaped and left me needing one. I put everything back together and had the play in the input shaft measured. The transmission shop, of which I have never worked with before told me it had .00010 play in the shaft and that was fine because you want there to be a little play so as to ensure the bearings aren't preloaded. They also said to maybe get rid of a little of the slop is to run 90W oil.

Does this sound correct? 90W is a lot heavier and .0001 inches of slop is more than my friend mechanics have been telling me.

Help!

[NovaSS]

.0001 ??? I wouldnt worry about it.

Im sure thats way inside th +/- tolerance of the tranny and Im sure most shops cant even measure that amount correctly

[georgeb]

Are you sure it's not .001 (one-one thousandth)? Because otherwise that would mean that the shim you lost was .0001 or less. An .001 feeler gauge is like a piece of foil!

[Kraig]

How did they measure a tenth of a thousandth? Being a machinist/welder etc. I doubt a tranny shop could measure down to a tenth. You sure it's not .010" ? And no gear oil won't take up slop and our trannies weren't designed to run it.

[Kraig]

End play of the input shaft is supposed to be .005 to 0.1mm (0.0002 to 0.004"), available shims are 0.0012, 0.016, and 0.020".

[nitrofarm]

Are you sure you lost it?

Those readings dont make sense for a tranny that is missing its preload shim.
The shims can stay in place & look like they are part of the bearing race IMO.
And as far as running gear oil as opposed to ATF.Thats been beat to death on other threads. Just search the user John Gunn (i think thats how you spell his name)? He has a thread thats quite long on this subject. And pretty much everyone thats anyone on this forum gave input. So for FOR THE LOVE OF GOD. Lets not go there, here!

[Advancedynamix]

End play of the input shaft is supposed to be .005 to 0.1mm (0.0002 to 0.004"), available shims are 0.0012, 0.016, and 0.020".

I've set up bars across the bell housing and used a dial indicator that measured up to a .0001" to measure mainshaft endplay before. You can tell if your decimal point is in the wrong place by feeling the play with your fingers. You can't feel .0001" with your fingers, but you can barely feel .001" if there isn't any oil (especially gear oil) in the trans. Either way your are within tolerance and you shouldn't worry. If it's .010 you will feel it and should find that shim or get a new one.

[Kraig]

I second what Advancedynamix says about measuring the endplay. I do something similar when rebuilding T-5s.

[michaelmiller85]

Just got back from out of town. my mistake. there is .001 of play in the input shaft.

I didn't think that using 90W was a good idea, but that is what they said. thanks for the input.