Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend> T-350 rear seal leak
User Name
Password
lost password?   |   register now

Thread: T-350 rear seal leak Reply to Thread
Title:
  
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
08-08-2004 02:55 PM
LanceM Don't want this to sound like anything other than a question, but did you put the seal in the right way? If you put it in backwards it will leak, don't ask how I know.....
08-08-2004 02:31 PM
billg_69gmc
tranny leak

thanks for the info... I believe there were a bunch of posts about proper yokes with or without holes and if they mated up to the wrong tranny there would be an issue... I think Im recalling it correctly. I'll have to check that out. I'd hate to mess with the drive train after actually being happy with the setup.

Yeah the color is cool, I bought the truck with the body work done, it has some pearl in it so it really kicks at night and sorta has a deeper look under different artificial lights.

I reallize this is slightly off forum topic, but here's my paint codes given to me by the guy who painted the truck in case anyone is interested...

Dupont stock code for base coat/color
W9339F Chromapremier
Formula for a pint 16 oz
827J Blue 57.9
830J HS FAST GREEN 115.6
801J HS WHITE 155.1
807J LS BLACK 162.5
820J VIOLET 165.9
62320F BINDER 331.5
62330F BALANCER 450.1
Dupont stock code for Mid coat
F1307F Chromapremier
Formula for a pint
4530S flop control agent 9.8
1007S violet pearl 14.7
62330F balancer 430.1
08-08-2004 01:30 PM
Bill77C10
th350 rear seal leak

I have a '77 and have had the same problem - I bought a 700 R$ and replaced 3 new seals and checked the run out. All was OK. It still leaked. The TCI guy ( sold me the 700R4) said the check my yoke. I didn't believe him but I just took it off and it has a small hole in the center of it!!!! The shaft seal is dry. Maybe you should check yours too. I amgoing to eposy the hole and see if it leaks too.
Good luck. Bill77C10

BTW - nice color on your truck- mine is almost exactly the same shade of blue -a custom Sikkens Color - go figure.
08-02-2004 09:34 PM
billg_69gmc
Seal Leak Saddness

Quote:
Originally posted by stuartc
when you removed the output shaft flange did you check wear the seals runs to see if there were any tram lines i,e worn flange
was the flange a good fit on the splines i.e tight or loose ?
The bushing looked like it needed replacing. I don't know what a tram line is. I need to get a book on this stuff I think. If you mean if there was wear at the point where the seal contacts the drive shaft yoke. I don't think I paid attention to look. The penalty for being a novice is missing all the things I should have looked for the FIRST time I replaced the seal.

Quote:
Originally posted by M&M CUSTOM
Did you check to see if there were grooves worn in the slip yoke?

If so, either a repair sleeve can be installed (if you can find one) or a new yoke is in order.

If the yoke is OK, did you happen to apply a small amount of transmission fluid to the surface of the yoke, and inner surface of the seal?

If not, you could have prematurely worn the seal.
I did lubricate the seal prior to installing it. With the seal, does the seal come in different diameters? The seal seat was correct and seated firm. Another novice miss on my part was knowing how tight the seal should be in relation to the yoke when it is slipped back into place.

ANY recommendations on a good tranny book would be appreciated. I don't mind reading/learning. I guess I was being hopeful that replacing the seal was going to fix my problem and it did not. Other than that, I like the 350turbo. Lots of Giddy Yup.

billg
08-02-2004 02:06 PM
M&M CUSTOM Did you check to see if there were grooves worn in the slip yoke?

If so, either a repair sleeve can be installed (if you can find one) or a new yoke is in order.

If the yoke is OK, did you happen to apply a small amount of transmission fluid to the surface of the yoke, and inner surface of the seal?

If not, you could have prematurely worn the seal.
08-01-2004 11:51 PM
stuartc when you removed the output shaft flange did you check wear the seals runs to see if there were any tram lines i,e worn flange
was the flange a good fit on the splines i.e tight or loose ?
08-01-2004 10:21 PM
billg_69gmc
T-350 rear seal leak

Hey all,

I have a th350 in my 69 gmc with a 350 ci motor. A few months back I notice tranny fluid leaking from the rear seal. I replaced the seal. After a few days it started leaking again. I figured maybe since I hadn't replaced the bushing at the same time that that was possibly the problem.

So I took off the tailstock of the tranny and replaced the bushing and the seal. Reassembled, and again I have the same leak.

With the truck sitting up it still manages to drip leak, suffice to say I'm not driving it AGAIN since I don't want to fry the tranny.

Is this a symptom of a bearing on the output shaft or something... my manual glances over alot of trannys and doesn't get specific enough for me to know if it is the problem AND if it is difficult to fix without investing in a special set of tools.

Is it worth the trouble fixing? Should I think about slapping a different tranny in to get better gas mileage?

Any advice would be appreciated!

billg

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -6. The time now is 10:51 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.