Create an account Home  ·  ·  Forums  ·  ·  Articles  ·  ·  Downloads  ·  ·  Photo Gallery  
Login
Nickname

Password

Don't have an account yet? You can create one here.

Navigation
· Home
· Article Archive
· Article Submit
· Downloads
· FAQ
· Forums
· Members List
· Photo Gallery
· Private Messages
· Web Links
· Your Account

Search Articles



Forums

Wiper motor...which is the correct one?
Lead additive, one more question.
M31C mount with or without replica weapon
Backfire and Hesitation
Wanted: Steering column and shaft for M38-1952, or late CJ2A
2024 CT. MILITARY VEHICLE SHOW AND FLEA MARKET- JUNE 15,2024
Brake Line
How to link full size photos in posts
Clutch release bearing support cast tab for return spring
T90 case replacement required?

Willys M Jeeps Forums


willysmjeeps.com :: View topic - L134 Rear Main Seal
 Forum FAQForum FAQ   SearchSearch   UsergroupsUsergroups   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

L134 Rear Main Seal

 
Post new topic   Reply to topic    willysmjeeps.com Forum Index -> Technical Knowledge Base
View previous topic :: View next topic  
Author Message
Fish
Member


Joined: Jun 18, 2015
Posts: 8
Location: California

PostPosted: Tue Aug 25, 2015 11:08 pm    Post subject: L134 Rear Main Seal Reply with quote

I have a question regarding the rear main seal. My engine serial number is MC 34570 in a51 M38. I am going through the engine for a full rebuild and I am finding some conflicting information on the rear main seals. All the machine shops are saying the lip seal is a potential for rear main issues like a burned bearing suggesting a rope seal is more reliable. I have two seals in my possession. The fel-pro lip seal and a NOS military which appears to be impregnated with graphite. I see there are some venders that offer a neoprene alternative over what I believe is a L buna fel-pro. I am wondering where the stigma of poor reliability of the lip seal is coming from. Is it a material or installation tolerance or simply a myth. What would you guys use?
_________________
1951 M38
MC 28477
Back to top
View user's profile Send private message
wesk
Site Administrator
Site Administrator


Joined: Apr 04, 2005
Posts: 16225
Location: Wisconsin

PostPosted: Tue Aug 25, 2015 11:30 pm    Post subject: Reply with quote

You have brought up a topic that has been discussed over and over again here and on every other jeep web site. A simple Google search for Willys L134 rear oil seal will answer your question.

https://www.google.com/?gws_rd=ssl#q=willys+L134+rear+oil+seal

There you can do what most of us did was separate the BS from the facts.

Or just write this down in your copy of the engine manual for your jeep.

1 - There were several years of bad seals produced by Felpro for their own name brand and for others. These were in the 1980/90's. Do not use them!

2 - The early L134's came with cranks that were meant to be used with the rope seal. These did not have the dimensional discipline applied to their sealing journal on the cranks that was applied to the later cranks meant to be used with the formed (lip type) (Garloc type) seals.

3 - When you rebuild the Willys 4 cylinders please read and follow the overhaul manual for the engine. Especially when you have installed the crankshaft with it's bearings and a new rear seal. Before installing rods and pistons the crank should turn easily with your hand on the ends of the crank. If it does not resolve the issue then.

Finally, as with most questions asked here I have provided most of the answers in the hundreds of technical photos in my photo album. It is the 2nd album in the Member's Album page.

http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php&page=1

Especially this sub-album dedicated entirely to the issue you have re-opened.

http://www.willysmjeeps.com/v2/modules.php?set_albumName=album134&op=modload&name=gallery&file=index&include=view_album.php

Also make sure your machinist properly cleans up the journal on the crank that the rear seals ride on.


This journal will never allow either type seal to seal well.


_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    willysmjeeps.com Forum Index -> Technical Knowledge Base All times are GMT - 6 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

Powered by phpBB © 2001 phpBB Group
Forums ©

 



PHP-Nuke Copyright © 2005 by Francisco Burzi. This is free software, and you may redistribute it under the GPL. PHP-Nuke comes with absolutely no warranty, for details, see the license.