Transmission End Play (stock 41)

[Veeder]

I've rebuilt the tran. And in the final stages of assy. I do have a little bit of end play when pulling on the spline rear shaft (1/8 inch approx.) Based on what I've read on Vapelts Web site (super helpful) that is not acceptable. I'll call them Monday as I believe they have washers for this issue.
Would like to hear from someone who may have dealt with this successfully.
Bob

[Zeke3]

Do you have the universal joint installed on the end of the shaft? It took all the end play out of my 1937 trans when the joint is bolted in place.

[Veeder]

I do not and wow I was wondering if the Universal joint had anything to do with it. I don't have a U Joint to try it but very very good information thank u
Bob

[HD Rider]

Originally Posted by Veeder

I do not and wow I was wondering if the Universal joint had anything to do with it. I don't have a U Joint to try it but very very good information thank u
Bob

There's the problem. When you tighten the ujoint, it pulls the output shaft tight against the rear bearing.

[Veeder]

Many thks guys! And yes you will love it building a frame to protect this thing for 6 mths or so I dropped it as the frame was not quite done but the 2x4 protected the tran case but the rear mount broke. Lovely!!! U gotta love it

[Bored&Stroked]

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Hey guys, I don't believe the u-joint has anything to do with it . . . will check a 39 box that I just finished in the AM.

With that said you have to have the transmission mount on the box to hold the rear bearing in (or it can move backwards) - so if you don't have the mount on, then use a 3/8" bolt with a big washer and thread it in the back so the washer holds the bearing in place.

[Veeder]

Thks Bored and stroked it would be nice to confirm the situation otherwise I must be looking at putting shims in

Stay tuned

[Bored&Stroked]

Veeder - when you mention play - what is it? Is it the main-shaft moving inside the bearing at the rear? I've never seen that - so please explain?

[bbrocksr]

Originally Posted by Bored&Stroked

Veeder - when you mention play - what is it? Is it the main-shaft moving inside the bearing at the rear? I've never seen that - so please explain?

U joint clamps/secures the shaft to the bearing, rear bearing retainer/rear mount clamps/secures the bearing to the case. Both must be secured before checking endplay,
Bill

[HD Rider]

Originally Posted by bbrocksr

U joint clamps/secures the shaft to the bearing, rear bearing retainer/rear mount clamps/secures the bearing to the case. Both must be secured before checking endplay,
Bill

Nailed it.

[Bored&Stroked]

Originally Posted by bbrocksr

U joint clamps/secures the shaft to the bearing, rear bearing retainer/rear mount clamps/secures the bearing to the case. Both must be secured before checking endplay,
Bill

So explain how it works when you have an open drive transmission shaft with a slip yoke on the back? Same transmission, just different main shaft. I will checkout both main shafts tomorrow . . . as I'm curious myself.

[svm99]

Originally Posted by Bored&Stroked

So explain how it works when you have an open drive transmission shaft with a slip yoke on the back? Same transmission, just different main shaft. I will checkout both main shafts tomorrow . . . as I'm curious myself.

The open drive rear bearing is retained on the shaft by the speedometer drive gear and a snap ring. I've found the speedometer gears to be in slightly different widths to minimize the end play when the snap ring is put in place.

[Veeder]

Great information thks again!
Now it's time to find a new rear bearing retainer. Seems like there are multiple types. I still can't believe I dropped it unbelievable. Have a great day guys my 41 is going for a ride today!!!!!

[Terry,OH]

The front and rear bearing outer retaining snap rings must be of the proper thickness as the originals. 0.075-0.080"

[Ol' Ron]

Back in the day, we we would meadure the distance between the inside of the two retiner rings on the fron and rear bearings in a lathe. with the assemble held tight, all .006/.008" and machine the case to match. Tis kept the trans from jumping out of 2nd. it also kept them together behind the Oldsmobile engines. Later I was told this was wrong and you should use shims, but I don't know where you'd put the shims. It was about this time the cad/LaSal trand got popular. Maybe somebody will remember this.
Gramps

[Veeder]

Mounting the U-joint took all the end play out just an update

[FRANK PKNY]

The shims would be correct prior to loading th u joint. Do you have VanPelts book? it goes over this aspect.

[Karl Wolf]

Mac VanPelt has an excellent transmission book.
Get one

Karl