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Replacing pinion seals


 
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ThePhantum
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PostPosted: Wed Jun 01, 2005 6:03 pm    Post subject: Replacing pinion seals Reply with quote

So both my pinion seals are leaking on the XJ (they've been for awhile...I'm just finally gonna fix 'em). I do not want to have to setup the R&P just to change a damn seal.

Here's what I'm thinking for a proceedure.
    1. Remove DS and mark the nut to yoke to pinion splines.
    2. Remove the nut, pull the yoke off the splines
    3. Off with the old seal and on with the new
    4. Reinstall yoke using alignment marks
    5. FSM says use new nut on pinion, but I'm thinking some locktite (preserves my mark that way)
    6. Tighten nut to where was using marks

I can then check the bearing preload with the in-lbs wrench and adjust from there if needed.

If I'm missing something, please smack me...then tell me what it is I'm missing.
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Keithtj
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Joined: 05 Jan 2004
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PostPosted: Fri Aug 05, 2005 1:41 pm    Post subject: Reply with quote

Steve, how'd this work for you, I need to replace my seals also!
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Code3TJ
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PostPosted: Fri Aug 05, 2005 10:05 pm    Post subject: Reply with quote

Yeah, remove your brake calipers or drums and measure the torque required to rotate the pinion gear. Add 5 in/lbs to the starting torque for the Dana 30. I'll check to see what it is on a D44.
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ThePhantum
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PostPosted: Fri Aug 05, 2005 10:11 pm    Post subject: Reply with quote

It's the same for the D44...add 5 in/lbs to the rotational torque. If you are using the original nut, put loctite on it. I'll tell you what Keith, air tools made this a LOT easier. The nuts are torqued on around 200 ft/lbs. It would have been a bitch to remove them with pure muscle.
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Keithtj
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PostPosted: Tue Aug 09, 2005 8:43 am    Post subject: Reply with quote

hmm, about how long did it take you. I have a friend that rebuilds axles and diffs on the huge earth movers and his bosses are nice enough to let us use the shop after hours. He's got all the tools I need, I just have to get the parts and what not.
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ThePhantum
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PostPosted: Tue Aug 09, 2005 2:31 pm    Post subject: Reply with quote

It will take more time to drain and refill the diff than it will to change the seal. Another tip...a small gear puller with the jaws reversed makes removing the old seal childs play. Wink
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