Th400 endplay

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May 1, 2021
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Almost have all parts and got my new transmission holder yesterday so thought it was time to start planing with it. Using this sonnax guide.https://www.sonnax.com/tech_resources/237-playing-with-transmissions-setting-total-endplay-to-prevent-th400-gear-train-failure
Checked rear endplay.
I went with the sonnax no walk bushing, using two .015” shim gets me a tight .010 clearance checking with a feeler gauge is that ok? Sonnax says .007”-.019” but I seen that some recomends .005”? Will double check with dial indicator next time.

Next I checked Front planery to rear planery play, I think its pretty big I used a metall four tab washer from the output shaft instead of the plastic so to tighter that clearance I need a thicker? Is there a way to check the play using some kind of tool? By feel feels Insecure? But those metall washers are avaible selective? I also replaced the plastic washer against the center support with a metal one because the old plastic looked kind of beaten up but that has nothing to do with this clearance?
 

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Are this what I need to tighter up clearance between the planetarys?
 
Are this what I need to tighter up clearance between the planetarys?

It is. Sometimes you have to shim under the Trust Washer that sits in the Center Support, But I don't know of a drop-in shim.....I machine my own out of differential side bearing shims.
 
I have ordered the shims.
Played some more with the endplay.
Its not like checking endplay on a BBC or sbc were you get a distinct ”clunk” so with the dial indicator I tried one .015 and one .010 shim and used a screwdriwer to carefully pry got .018-.019 so guess the double .015 shims are they way to go for .013-.014? Or should I use one .015 and two .010 shim to get .008-.009? I tried that in the begining at it felt very tight?
 

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I've played with different methods over the years, Point the output shaft straight up.....Zero the indicator. Carefully rotate the unit so the output shaft points straight down. Of coarse I don't know if the indicator will hit the leg of the engine stand?
 
I've played with different methods over the years, Point the output shaft straight up.....Zero the indicator. Carefully rotate the unit so the output shaft points straight down. Of coarse I don't know if the indicator will hit the leg of the engine stand?
I did but the opposite started in bottom and did zero the indicator with one .015 and two .010 I hade very little endplay so used two .015 shim and that did give me .005-.006 clearance. So guess the double .015 is the way Im going.
 

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It is. Sometimes you have to shim under the Trust Washer that sits in the Center Support, But I don't know of a drop-in shim.....I machine my own out of differential side bearing shims.
I think I have located shims that work under the center support thrust washer. You think its best to shim under both to reduce the clearance?
 
I've played with different methods over the years, Point the output shaft straight up.....Zero the indicator. Carefully rotate the unit so the output shaft points straight down. Of coarse I don't know if the indicator will hit the leg of the engine stand?
Do you think my method was ok and accurate? Should I use shims on both sides if possible to tighten up the planetarys clearance?
 
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