 |
29-03-2015
|
 |
Established Member
|
|
Join Date: Jul 2008
Location: Perth
Posts: 114 What Jeep do I drive?: MB
Likes: 0
Liked 1 Time in 1 Post
|
|
Dana 44 rebuild. To stretch or not to stretch...
I have read a few articles on rebuilding the Dana 44 (1980 model).
One article mentions stretching the diff housing to set the correct carrier bearing pre-load. The other doesn't mention stretching the housing at all.
Anyone know the correct way?
Cheers
__________________
The quicker you fall behind, the longer you have to catch up.
|
30-03-2015
|
 |
Established Member
|
|
Join Date: Feb 2014
Posts: 173 What Jeep do I drive?: TJ
Likes: 10
Liked 31 Times in 20 Posts
|
|
I have just finished rebuilding both mine. It is absolutely critical that you spread it. You'll damage the shims and bearings without spreading the housing. You'll need a diff spreader to do it. You'll be able to get the center out without spreading it but it needs to be spread to get it back in. Never spread it anymore than 0.015", anymore than this and you run the risk of the housing bending and not coming back to straight, or worse cracking the housing.
Edit: I should also add that if you do need to use the spreader to get the center out then only spread it just enough to release the center. When the center is in the housing, the housing will already be spread by roughly 8-10 thou. If you try to spread it too much to get the center out then you run the risk of bending or cracking the housing.
Last edited by Aus-Jeep; 30-03-2015 at 08:50 AM.
|
30-03-2015
|
|
Established Member
|
|
Join Date: Jul 2008
Location: Perth
Posts: 114 What Jeep do I drive?: MB
Likes: 0
Liked 1 Time in 1 Post
|
|
Quote:
Originally Posted by Aus-Jeep
I have just finished rebuilding both mine. It is absolutely critical that you spread it. You'll damage the shims and bearings without spreading the housing. You'll need a diff spreader to do it. You'll be able to get the center out without spreading it but it needs to be spread to get it back in. Never spread it anymore than 0.015", anymore than this and you run the risk of the housing bending and not coming back to straight, or worse cracking the housing.
Edit: I should also add that if you do need to use the spreader to get the center out then only spread it just enough to release the center. When the center is in the housing, the housing will already be spread by roughly 8-10 thou. If you try to spread it too much to get the center out then you run the risk of bending or cracking the housing.
|
Thanks for the advice mate. Very handy to know.
Where did you find all the info for tolerances etc?
Never done this job before, so not sure whether to attempt this myself or put them in the shop...
__________________
The quicker you fall behind, the longer you have to catch up.
|
30-03-2015
|
|
Established Member
|
|
Join Date: Feb 2014
Posts: 173 What Jeep do I drive?: TJ
Likes: 10
Liked 31 Times in 20 Posts
|
|
Spreading the diff is probably the easiest part of doing the rebuild, setting up shims, preload, backlash and patterns can be a fairly comprehensive job.
To be honest, If its not something you have done before or something you already have a fairly good understanding of then i would put it into a shop. Its not a hard job to do but it can have some pretty bad out comes if its not done right.
I have a fairly comprehensive mechanical background and also toolmaking, fitter machinist so for me it was pretty straight forward but not something i would recommend to anyone that has never done it before.
|
30-03-2015
|
|
Established Member
|
|
Join Date: Jul 2008
Location: Perth
Posts: 114 What Jeep do I drive?: MB
Likes: 0
Liked 1 Time in 1 Post
|
|
Quote:
Originally Posted by Aus-Jeep
Spreading the diff is probably the easiest part of doing the rebuild, setting up shims, preload, backlash and patterns can be a fairly comprehensive job.
To be honest, If its not something you have done before or something you already have a fairly good understanding of then i would put it into a shop. Its not a hard job to do but it can have some pretty bad out comes if its not done right.
I have a fairly comprehensive mechanical background and also toolmaking, fitter machinist so for me it was pretty straight forward but not something i would recommend to anyone that has never done it before.
|
Cheers for the heads up, think I'll be giving that a miss 
__________________
The quicker you fall behind, the longer you have to catch up.
|
| Thread Tools |
Search this Thread |
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is On
|
|
|
|
All times are GMT +10. The time now is 03:52 AM.
|
|
|
|
Advertisements
|
|
|
AJOR does not vouch for or warrant the accuracy, completeness
or usefulness of any message, and are not responsible for the contents of any
message. The messages express the views of the author of the message, not necessarily
the views of AJOR or any entity associated with AJOR, nor should any advice
be substituted as technical advice replacing that of a mechanic. You agree,
through your use of this service, that you will not use AJOR to post any material
which is knowingly false and/or defamatory, inaccurate, abusive, vulgar, hateful,
harassing, obscene, profane, sexually oriented, threatening, invasive of a person's
privacy, religious, political or otherwise violative of any law. You agree not to post any copyrighted
material unless the copyright is owned by you or by AJOR. The owner, administrators
and moderators of AJOR reserve the right to delete any message or members for
any or no reason whatsoever. You remain solely responsible for the content of
your messages, and you agree to indemnify and hold harmless AJOR, the administrators,
moderators, and their agents with respect to any claim based upon transmission
of your message(s). The use of profile signatures to intentionally mislead or misdirect any member on this forum is not acceptable and may result in your account being suspended. Any trip that is organised through the AJOR forum is participated
at your own risk. If you or your vehicle is damaged it is your responsibility,
not that of the person that posted the thread, message or topic initiating the
trip, nor the organisers of AJOR or moderators of any specific forum. This forum
and associated website is the property of AJOR. No user data is harvested and no information supplied in your registration will be sold for profit.
|
