Leaking T-Case and the E-Brake drum - Defender Source
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  #1  
Old February 20th, 2012, 02:09 AM
paydan
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Norberto
1979 RHD Series III
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Leaking T-Case and the E-Brake drum

I am doing a total rebuild of my 79 series III landy and upon initial inspection I noticed a pretty good amount of oil leaking from the rear output of the T-case. It seems to be leaking from the rear output and into the E-brake drum. Has anybody encountered this and if so, do you have any suggestions? Thanks everyone.
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  #2  
Old February 20th, 2012, 02:50 AM
paydan
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Norberto
1979 RHD Series III
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Hey thanks for the information Jeff. Since I have never worked with a tranny nor a t-case, can you tell me how hard (or easy) replacing that seal is?
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  #3  
Old February 20th, 2012, 08:20 AM
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airbornrover
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William Skidmore
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Get a cheapo seal puller from the auto store, it will save you headaches. On the bottom of the housing/extension between the break and the transfer case there is a little hole that is suppose to be clear for any oil to weep out before it reaches the brake it gets clogged make sure its clear.
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  #4  
Old February 20th, 2012, 10:09 AM
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Teriann Wakeman
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Quote:
Originally Posted by JSBriggs View Post
You need a new output seal, and a couple cans of brake clean. Be sure to clean/polish the sealing surface on the output stub, and smear it with grease before installing the new seal.

-Jeff
Get the double lip version of the seal. The survival of the seal depends upon getting the end play of the output shaft correct. That is set by the shims between the transfer case and the speedometer housing. The workshop manual will walk you through it step by step.

When you have the speedo housing off you will notice a vertical slot going down from the back of the seal. This slot is to allow drainage of any seepage past the seal so it does not soak the parking brake. Be sure this slot stays open when you reassemble everything.

If you do not have a workshop manual get one. It is well written and essential to have for long term ownership.

Basically you remove the rear prop shaft, mechanical brake parts, speedo housing being carful not to loose of damage any spacer shims to get at the output seal.
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  #5  
Old February 20th, 2012, 01:53 PM
paydan
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Norberto
1979 RHD Series III
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Thanks for the description TeriAnn. I have the rear prop shaft off and now I am in the midst of removing the brake. So the seal is located behind the speedo housing? From there is it pretty much a pull the old one out, clean the area and put the new one back in job? Jeff is graciously emailing me an S3 manual. Thanks you guys.
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  #6  
Old February 20th, 2012, 02:09 PM
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aka rover
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ed angel
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I just rebuilt my case but here is a pic of the speedo housing off the case, the seal is on the out side just behind the output shaft yoke.

If you decide to setup the preload on the output shaft keep the shims clean and un damaged, I take the thicker ones and keep them on the ends of the stack to protect the thinner ones.


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