D30 carrier bearing replacement - JeepForum.com
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post #1 of 3 Old 08-25-2013, 02:53 PM Thread Starter
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1998 ZJ 
Join Date: Dec 2012
Location: Birmingham
Posts: 62
D30 carrier bearing replacement

Before l go ahead with this job i just wanted to make sure this is something l can do on the drive without the need of special tools etc?

If not ill buy a complete axle.

1998 4.0


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post #2 of 3 Old 08-25-2013, 03:59 PM
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1996 ZJ 
Join Date: May 2012
Location: Yarraville
Posts: 571
I'm fairly certain you need a bearing puller to get the old bearings off the diff carrier.
If you don't care about them you may cut them off with an angle grinder, but you'd need to preserve the shims that sit between the bearing sleeve and the carrier.
Also putting the new ones on can be done with a hammer and a block of wood, but you got to be really careful to let it go flat-parallel, otherwise they'd jam.

And in that case you'd have to hope that the preload will be correct with the existing shims, otherwise you've got no way of pulling the bearings back off intact.

I'd suggest at least getting a proper bearing puller.
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post #3 of 3 Old 08-25-2013, 04:13 PM
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1997 ZJ 
Join Date: Apr 2007
Location: Indianapolis, IN
Posts: 601
On my 30, the shims are out side the bearings as they are on my 44a. My wife's 35 has the shims sandwiched inside the bearings. I cut off my bearings & used the inner races as a pressing tool w/a dead blow mallet. Did the pinion bearing on & off with a press @ a local machine shop. If you want to see if you are into this check my "Wheel bearings turns into my axle build thread" w/photos. It's a 44a but the job is basically the same. I will admit to some short cuts that many on here don't agree with. It's not an easy job.

Mine '97 White, ZJ Ltd, 5.2, Up-Country Suspension, Kolak ignition, Kolak/Magnaflow Exhaust
Her's '98 Chargold ZJ Ltd. 4.0 2wd
Our 1st '97 White, ZJ Ltd, 5.2, The parts Jeep for 5 years...R.I.P. Sent to Pic-A-Part 5/17/2013

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