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Unread 09-09-2010, 12:07 PM   #1
NJscott
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General axle question

Background:

My jeep has been mothballed for the past few months while preparing for and executing an engine rebuild. The engine is now back in and running strong.

Problem:

During this time one of the seals on my front axle went bad and i had been putting that off since the rebuild was a little more important. Well the other day i decide to tackle the seals so i can finally get her back on the road. When i get inside the diff I find (to my dismay) that there is no safety pin holding the inner rod that keeps the shafts in place. So i grab my problem solver (BFH and a punch ) and figure ill have it out of there in no time. WRONG! The rod will not budge. My only thought is that the PO lost/broke the safety pin and glued the rod back in. Does any one have any Plan A suggestions (Plan B being Axle swap)?

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Unread 09-09-2010, 12:11 PM   #2
Chris
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You have me confused, are you talking about the hollow pin that hold the spiders together on the carrier or something else? That is the only pin I can think of in there.
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Unread 09-09-2010, 12:12 PM   #3
chupacabrah
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front or rear?

what rod?

are you talking about removing the pin from the carrier?
there should be a pin that goes through on one side of the carrier through the rod. this holds the rod in the carrier and keeps the spider gears in place, but doesn't hold in the shafts. the pin needs to be tapped out, but it can only go one way. if it doesnt come out that way, tap it out the other way.

the c-clips hold in the shafts (but not on the front...some d30s do and some dont have c clips-- they don't really need them).
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Unread 09-09-2010, 12:12 PM   #4
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You should be able to just pull the shafts out unless you have a C-clip and in that case just pop off the C-clip and then pull the shafts.
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Unread 09-09-2010, 12:16 PM   #5
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Quote:
Originally Posted by Chris View Post
You have me confused, are you talking about the hollow pin that hold the spiders together on the carrier or something else? That is the only pin I can think of in there.
This.

The cross shaft in the carrier is held in with a roll pin which holds the spiders in. The axle shafts themselves can be removed by pulling the hubs (assuming you have the non c-clip style D30. For some reason I recall there being a few years that had a c-clip in the front D30.

Which seal is leaking? Is it coming out of the tubes or the pinion?
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Unread 09-09-2010, 12:17 PM   #6
NJscott
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I hope this works.

Dana 30

In the box marked 14 there is a rod that goes between the gears which is supposed to be held in by a through bolt. this through bolt is missing and the rod wont come out. I tried on both sides with no luck
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Unread 09-09-2010, 12:18 PM   #7
Chris
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I know my 90 had the C-clip but I tossed it out when i installed my Aussie.
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Unread 09-09-2010, 12:20 PM   #8
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It is a roll pin and I get mine out my tapping with an allen wrench and then you have to tap out the rod but none of this needs to be taken apert to fix an axle seal. Are you trying to fix a seal or put inn a locker or replace spider gears?
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Unread 09-09-2010, 12:20 PM   #9
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The tube seal is leaking.

I was just following my service manual which said to remove the cross shaft so i havent tried anything else. Either way the roll pin is missing.

Thanks louie4 for cleaning up my nomenclature.
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Unread 09-09-2010, 12:24 PM   #10
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Are you sure it is missing? You should be able to see right thru it. Can you fit a screw driver all the way thru were it is supposed to be. I just find it hard to believe it is missing and things didn't fall apart on you. But once again you can take the carrier out in one piece to get it out of the way, there is nothing in there that has anything to do with seals. Those are in the axle housing.
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Unread 09-09-2010, 12:28 PM   #11
NJscott
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The smaller safety roll pin is missing i stuck an allen wrench all the way through. The main cross shaft is still there.

I find it hard to believe too, thats why i think the cross shaft was glued back in or something
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Unread 09-09-2010, 12:30 PM   #12
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At any rate you don't need to take it apart so I would make sure you grab one and toss it in before you put it back together. I am sure someone will have one or you can probably get one for a buck or so at the auto parts store.
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Unread 09-09-2010, 12:47 PM   #13
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Quote:
Originally Posted by NJscott View Post
The tube seal is leaking.

I was just following my service manual which said to remove the cross shaft so i havent tried anything else. Either way the roll pin is missing.

Thanks louie4 for cleaning up my nomenclature.
No problem. Some of my other technical terms are "doo-hicky", "thinga-ma-bob" (or thinga-majigger) and "doo-da-lolly".

As for the roll pin you can get them at Lowe's. To replace it you'll need to take the carrier out and unbolt the ring gear, at least I had to when I was putting my Lock-Right in. If you can get the roll pin in without interference from the ring gear then disregard my next sentence.

Make sure you mark or take a picture of the orientation of the carrier bearing caps, which side they go on and mark the carrier and ring gear to make sure you put it back the same way as well. It's usually good practice to replace the ring gear bolts but I ended up using loctite and torquing them to spec.
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Unread 09-09-2010, 01:22 PM   #14
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If you gearing is 3:07 you can do it with out taking off the ring gear but if it is 3:55 or lower you will have to take it off.
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Unread 09-18-2010, 02:11 PM   #15
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OK. So im working on it this weekend and i could use some suggestions as how to do this. I got the outer shaft on the passanger side out and i am working on getting the drives side out. any tips would help alot. The haynes manual has nothing to say on this topic.
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