The Stovebolt Page Forums Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Work those trucks!




Share what you're up to this summer!

Stovebolt Site Search
 
Old Truck Calendars
Months of truck photos!
Nothing like an old truck calendar

Stovebolt Calendars

Check for details!


Who's Online Now
0 registered members (), 331 guests, and 3 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums48
Topics116,443
Posts926,239
Members42,439
Most Online940
Apr 5th, 2017
Image Posting Policy
Previous Thread
Next Thread
Print Thread
Page 1 of 2 1 2
Torque Tube oil leak #1290155 Fri Dec 07 2018 02:13 AM
Joined: Mar 2004
Posts: 246
K
kthomas Offline OP
Shop Shark
Good evening guys!

Just throwing this out for some discussion.

So, back in the summer when I pulled the 235 engine out of my 54 Chevy pickup for overhaul, before reinstalling it, I cleaned up the torque tube and when the engine / tranny went back in, I installed a new gasket in the torque tube u joint bell, and new packing in the retainer with the 2 metal washers on both sides.

Got everything back together and drove the truck a few times and the torque tube was dry as a bone, then I had a transmission problem and had to replace it recently, and since getting everything back together and driving it a couple hundred miles, I now have a leak at the u-joint bell retainer.

Not sure if I should unscrew it and try to see what's going on, but looking for some thoughts.

Thanks!!

Kevin

Attached Files
Torque Tube.PNG (504.24 KB, 303 downloads)
Last edited by kthomas; Fri Dec 07 2018 02:14 AM.
Re: Torque Tube oil leak [Re: kthomas] #1290158 Fri Dec 07 2018 02:23 AM
Joined: Mar 2010
Posts: 8,430
5
52Carl Offline
Master Gabster
Is it leaking at the ball or the knurled nut which you have circled?

Re: Torque Tube oil leak [Re: 52Carl] #1290159 Fri Dec 07 2018 02:24 AM
Joined: Mar 2004
Posts: 246
K
kthomas Offline OP
Shop Shark
Originally Posted by 52Carl
Is it leaking at the ball or the knurled nut which you have circled?


Hey Carl!

Sorry if I wasn't very clear. It's leaking at the knurled nut where the packing and 2 metal washers is. The question is, how would you address this leak, since everything is new?

Kevin.

Last edited by kthomas; Fri Dec 07 2018 02:51 AM.
Re: Torque Tube oil leak [Re: kthomas] #1290171 Fri Dec 07 2018 04:43 AM
Joined: Jan 2013
Posts: 1,391
N
ndkid275 Offline
Shop Shark
Mine did this and I grabbed a pair of large channel lock pliers and tightened it a little more. Now my 216 provides all the ground markings saying I have been there.

Chris

Re: Torque Tube oil leak [Re: kthomas] #1290172 Fri Dec 07 2018 05:12 AM
Joined: Mar 2011
Posts: 1,248
J
jorb Offline
Shop Shark
That part is called a Torque Tube Retainer. U-joint ball assembly
The ball seat in the photo is for the Hydra-Matic and Powerglide trans.
The manual trans ball seat is machined into the Tail Housing.
Manual trans. uses a 4 bolt hole ball collar.
HM & PG trans use a 6 bolt hole ball collar.

There are several reasons why the Torque Tube Retainers start to leak.
1. Missing O-Ring steel washers, 2 are required Picture and HERE
2. Retainer is not threaded on tight.
3. End of Torque Tube is scored and is tearing oil seal.
4. End of Torque Tube O.D. is wore down. Look at slides 35 thru 46 GM film strip.
5. Universal Ball housing I.D. is wore down. Replace
6. Oil seal does not have enough sponge tension to keep the Retainer tight. Rubber oil seals have better sponge tension than cork.

Tightening the retainer makes the seal bulge, pushing down onto the end of the torque tube, making a seal.
When the rubber or cork oil seals gets old and hard, they loose tension and don't bulge any more, and there
is no longer any back pressure on the threads, which keeps the retainer cap from loosening.

Parts illustration
Graphite grease might help
Torque Tube in Living Color

There is also a lot of down pressure at the u-joint ball housing / torque tube
connection from weight, torque and when applying the brakes.
You could give the ball housing a Girdle
Picture 1 , Picture 2, Picture 3, Picture 4
It clamps around the tail of the U-Joint ball housing and the torque tube.
Its soul purpose was to prevent the torque tube from drooping/sagging downward.
But that's a band aid.

check attachment

xxx

Attached Files
torquetubedrooping.jpg (36.81 KB, 232 downloads)
Re: Torque Tube oil leak [Re: kthomas] #1290203 Fri Dec 07 2018 05:31 PM
Joined: Apr 2008
Posts: 717
F
Forty9 Offline
Shop Shark
Awhile back someone mentioned that National #327 O-ring might fit the bill. Haven't tried it but maybe someone else has.


Ed
Re: Torque Tube oil leak [Re: Forty9] #1290274 Sat Dec 08 2018 01:49 AM
Joined: Mar 2004
Posts: 246
K
kthomas Offline OP
Shop Shark
Originally Posted by Forty9
Awhile back someone mentioned that National #327 O-ring might fit the bill. Haven't tried it but maybe someone else has.


It seems I read somewhere one time about using an o-ring. When I replaced all the gaskets recently, I just used that cork gasket in the retainer between the 2 washers and it was leak free until I had to remove the transmission and apparently when I put it back together this time, it went to leaking.

Kevin

Re: Torque Tube oil leak [Re: kthomas] #1290314 Sat Dec 08 2018 04:04 PM
Joined: Sep 2001
Posts: 28,585
tclederman Offline
Boltergeist
Because parts of that whole assembly are prone to leaking, especially when doing a "reseal" with used seals/gaskets, whenever I disconnect the enclosed driveline at the u-joint, I spend the $$ on the gasket kit:

https://www.classicparts.com/1935-54-U-Joint-Ball-Gasket-Seals/productinfo/92-111/


Tim
1954Advance-Design.com
1954 3106 Carryall Suburban - part of the family for 48 years
1954 3104 5-window pickup w/Hydra-Matic - part of the family for 14 years
Z-series (54/55) GMC 350 (2-ton) COE - now part of Dave's family
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engine are not "splash oilers" - this is a splash oiler.
Re: Torque Tube oil leak [Re: kthomas] #1290342 Sat Dec 08 2018 07:55 PM
Joined: Mar 2010
Posts: 8,430
5
52Carl Offline
Master Gabster
The seal at the knurled nut on the tube is compressed by tightening the knurled nut, making a tight seal. Unless the seal is cracked, just tightening the knurled nut will stop your leak.

Re: Torque Tube oil leak [Re: 52Carl] #1290352 Sat Dec 08 2018 08:53 PM
Joined: Mar 2011
Posts: 1,248
J
jorb Offline
Shop Shark
Originally Posted by tclederman
Because parts of that whole assembly are prone to leaking, especially when doing a "reseal" with used seals/gaskets, whenever I disconnect the enclosed driveline at the u-joint, I spend the $$ on the gasket kit:.

I agree, once the seal has been broken, you are better off to start fresh again.
Sad but true.

Originally Posted by 52Carl
The seal at the knurled nut on the tube is compressed by tightening the knurled nut, making a tight seal. Unless the seal is cracked, just tightening the knurled nut will stop your leak.

That advice will work only if the seal is still supple.
To bad there isn't away to just replace the retainer oil seal, without removing the the ball housing.

Example: Unscrew retainer cap, slide 1 washer froward, take out old oil seal,
cut and put in new oil seal, slide washer rearward, screw on retainer cap. Done
But you would have to figure out away to reconnect the splice in the oil seal.

Page 1 of 2 1 2

Moderated by  SWEET 

Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Powered by UBB.threads™ PHP Forum Software 7.7.3