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  #1  
Old 01-24-2003, 04:21 AM
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DrveJeepDrnkBeer DrveJeepDrnkBeer is offline
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Ive got a '79 J-10, and the rear pinion oil seal is bad and is leaking. I'm planning on starting to fix it today, and need to know what I should and shouldnt do while taking the pinion out and any tips I may need.

Thanks
Bryan
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Only a Jeep would have leaky electrical parts
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Old 01-24-2003, 05:32 AM
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btt
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2004 KJ - Wifes DD
1990 XJ - My DD
1988 F*rd Bronco - FOR SALE!
1986 F-250 Tow Rig! Ex cab, 4x4, 460!
1980 something Cherokee
1979 Wagoneer - 7" total lift, 36" Swamper TSL's, beadlocks, Warn fr bumper, Holly 670, lots more!
1968 J-3000 - Part out will start in the new year

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Originally Posted by andy d
Only a Jeep would have leaky electrical parts
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  #3  
Old 01-24-2003, 05:35 AM
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It's pretty much like a wheel seal and not difficult to remove/replace. If you have a Haynes manual, I'm pretty sure it'll take you through the steps.
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  #4  
Old 01-24-2003, 05:46 AM
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DrveJeepDrnkBeer DrveJeepDrnkBeer is offline
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Ive got the manual, I just kinda thought it would be a bit more difficult than it sounds. Do I NEED to get a new nut for the pinion? Or will the old one with lock-tight work?

Bryan
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  #5  
Old 01-24-2003, 10:16 AM
porchpiggy porchpiggy is offline
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I would use a new nut, I have not done this on a 44 but my brother did, and he said it was easier than he thought it would be.
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  #6  
Old 01-24-2003, 11:13 AM
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Where would I get a new nut for this?
Thanks
Bryan
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2004 KJ - Wifes DD
1990 XJ - My DD
1988 F*rd Bronco - FOR SALE!
1986 F-250 Tow Rig! Ex cab, 4x4, 460!
1980 something Cherokee
1979 Wagoneer - 7" total lift, 36" Swamper TSL's, beadlocks, Warn fr bumper, Holly 670, lots more!
1968 J-3000 - Part out will start in the new year

Quote:
Originally Posted by andy d
Only a Jeep would have leaky electrical parts
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  #7  
Old 01-24-2003, 11:50 AM
mountaincrusher mountaincrusher is offline
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try NAPA if you have one close. or some tranny shops have them
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  #8  
Old 01-24-2003, 04:23 PM
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This task is way easy on the Dana axles, PITA on the AMC 20 because the Dana's use shims for pinion preload and the AMC's use a crush sleeve and if you overtorque the crush sleeve you have to go get another one.

Have fun,
Dave
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  #9  
Old 01-24-2003, 04:27 PM
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Oh yeah I forgot, make sure that there is not a grove worn into the yoke where the seal rides. If there is you may have to install a repair sleeve on the yoke or if it is too deep you will need to get a new yoke.
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  #10  
Old 01-24-2003, 06:10 PM
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Pinion seals are pretty easy to replace but you have to be careful. Most Dana axles DO have a crush sleeve so be careful when tightening the pinion nut. You will need a holding tool to hold the yoke when loosening and tightening the pinion nut, do not use an impact gun, the rattling can cause future failure of the pinion bearings, they don't like being rattled violently. If you must use the old nut, soak the threads with loctite, but the best thing is to replace the nut. A harmonic balancer puller or other suitable puller can be used to remove the yoke from the pinion, beating on it with a hammer to remove it can damage the bearings. And one last tip, when installing the new seal, pack the inside of the lip with transmission assy lube, (grease like substance), what this does is help hold the thin tension spring, located inside the seal lip, in place. I have had this happen to me where you have banged the new seal in only to find the the hammer blows have unseated the tension spring and it then hangs around the pinion. Look at the new seal and I think you will know what I am talking about.
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  #11  
Old 01-24-2003, 08:00 PM
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Quote:
Originally posted by bcgrown:
[QB]Most Dana axles DO have a crush sleeveQB]
I think you are mistaken, or I have been forgetting to use them. I am only familiar with the Dana 44 and 60, with these two axles the pinion bearing preload is set with shims, not a crush sleave.
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  #12  
Old 01-25-2003, 04:16 AM
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The New School Wronglers 97 & up and probably the other new stuff use a crush sleeve dana 30 front 96 and earlier are shim.And the 35 uses a crush sleeve.
All the tough Dana's use shims though
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