Davids 4l60E rebuild
I keep trying to get the output shaft endplay tightened up to .025 ish. I have .045 as measured in the picture with the assembly upside down on the bench. So I took it apart, added .020 in shims between the rear support and bearing like the picture shows, and reinstalled everything back into the case. When I check the endplay it still has .045. So I put another .020 in shims for a total of .040. Put it all back in the case and I still have .045 endplay. Honestly I can’t see how adding the shims where I did is going to tighten the endplay up. Where am I going wrong?

O well... try and post a video of how you are stacking the components, and then how the measurement is being taken.
It sounds like incorrect assembly/ missing components...
Make sure that all your thrust bearings are in place.
I am measuring the endplay on the bench per the Sonnax instructions I posted earlier and get .045 with a feeler gauge. Get the same when I use a dial indicator. This “end play” is the gap between the snap ring and the planet? How does putting shims between the rear support and case tighten up the gap between the snap ring and planet? I am miss understanding something here.
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If not, then please do so.
I noticed that the Low-Roller Clutch and Inner-Race were not installed... make sure to install these parts when you assemble the Rear Half of the Transmission into the case to measure clearance.
Some people find it easier to have the Transmission inverted with the Output-Shaft pointing upward with a Dial-Indicator resting on the end of the Output-Shaft.
Pull up on the Output-Shaft (or push up from inside the Case) to obtain your measurement.
Good luck.
Attached is a short video of the output shaft endplay.
and it aggravates me.
What are you using for Shims now?
Also, once the Rear-Section End-Play is finalized... the Front-Section will need to have about 0.005" more clearance than the Rear-Section.
Last edited by David1; Jun 30, 2021 at 08:37 PM. Reason: gibberish







