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Final drive end play 0.140" overall? What?!!

BrandonHall10

BrandonHall10

Solving problems
I started the reassembly of a 4t65e for the minivan. Went to check the final drive assembly end play per the atsg manual instructions.

With a 0.070" washer already installed, I'm still seeing 0.070" play. Which makes 0.140" total!!

To put this thing within spec (0.005"-0.025") I would have to add a 0.125"-0.135" selective washer. The chart in the manual stops at 0.095" or something like that...

So, I guess my question is; can I "stack" the selective washers to get the desired result? If I throw a blue (0.060") in there, that should put me at 0.015" play. But it's this okay?

Is it normal for case to be this loose?

Details:
Transmission = 04BCB from a 2004 venture. Going into a 2004 silhouette.
 


Also,
Where can I buy individual end play and final drive selective thrust washers? I see TEP has a couple, but not the thickness I will need.
 
Thats a load of end play. You sure you didn't forget a bearing or something in the rest of the case. How far off is the forth support?
 
That's what I thought.

0.140" was TOTAL end play. (Final drive assembled with torrington bearing but NO selective washers.)
0.070" is the measured end play as it was previously assembled. (Final drive assembled with torrington bearing and 0.070" selective washer.)

Fourth support is somewhere around 0.030". I didn't get super precise. I just slammed it back together to get a rough idea. Regardless, that's still 0.018" over the maximum!
 
BillBoost37 said:
I don't supposed you measured before you pulled it apart to compare to?
Click to expand...
Unfortunately, I didn't. I will from now on though.

When I did the trans for my father in law's car, everything was right down the middle of the given tolerance, so I didn't think too much about it.
 


Third and second should have nothing to do with endplay being too great a number.

IIRC isn't endplay originally measured by putting the park gear, bearing, sungear and diff into the case and putting on the proper cover?
 
But wouldn't the end play be way off if something isn't right? Like 2nd sitting higher than usual? Maybe I'm cray

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BillBoost37 said:
IIRC isn't endplay originally measured by putting the park gear, bearing, sungear and diff into the case and putting on the proper cover?
Click to expand...

Whelp... I'm a dummy.

Now that the PBR fog has lifted, and I'm no longer being distracted by my 2 year old daughter, I can see that I was missing some pieces of the puzzle.

Kind of hard to get an accurate number when you leave the park gear and corresponding torrington bearing sitting on the bench. Looks like after having one successful build on my resume, I was feeling a little over confident. Derp.

This is why final assembly is done sober and ALONE!

I will check again tonight will all the required pieces involved.
 


LOL! Yup. Can't believe I did that. What a doofus.

Anyhow, all good when you measure the PROPER way. Ordering parts tomorrow.
 
ADecker said:
Haha I was right! Missing bits :)

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Click to expand...

Would you like a picture of transmission guts that shows how your suggestion was no where near right? The clutch packs and associated pieces have nothing at all to do with differential end play. It's the parts I mentioned, because the pinion doesn't move at all once in the case. End play is pinion to diff cover measuring the diff to the end cover.
 


As far as I'm concerned, you were both right. I appreciate the help. Now, my next issue...

I'm measuring the play in the reaction carrier (rear planet) gears at over 0.030". Is it possible to replace the brass thrust washers?

1364503821113-2085571455.jpeg
 
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