Anyone ever change a rear wheel bearing? - JeepForum.com
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post #1 of 36 Old 08-19-2011, 10:02 AM Thread Starter
tjlmbklr
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Anyone ever change a rear wheel bearing?

How hard is it, is it ordered as part of a hub like the front?

Thanks!


Bone Stock 2002 Grand Cherokee Limited
4.7L HO, Changed Stock NV247 Quadra-Drive T-case to a 242 Selec-Trac Shifter and all.
Upgraded my rims to 5 Spoke Rogue from '11 Grand Cherokee
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post #2 of 36 Old 08-19-2011, 11:02 AM
roach68
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The rear is just a bearing pressed onto the axle shaft, along with a seal and a retainer ring. The old bearing can either be pressed off or carefully cut off, the retainer ring is the same way. I pulled my shaft and took it to the stealership and let them do the hard part, cost me $30.

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post #3 of 36 Old 08-19-2011, 11:40 AM
FirefightinWJ
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Cut the old bearing off with a dremel or a 3" cutoff grinder.

I bought a 12 ton press from Harbor Freight to press them on with.

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post #4 of 36 Old 08-19-2011, 12:33 PM Thread Starter
tjlmbklr
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thanks guys, sounds basic enough. I have never removed an axle before, how's that? do I need to remove diff cover at all?

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Bone Stock 2002 Grand Cherokee Limited
4.7L HO, Changed Stock NV247 Quadra-Drive T-case to a 242 Selec-Trac Shifter and all.
Upgraded my rims to 5 Spoke Rogue from '11 Grand Cherokee
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post #5 of 36 Old 08-19-2011, 04:41 PM
WiCkeDuDe
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Not on a WJ. Remove the wheel, brake caliper and bracket, rotor, and remove the 4 bolts holding the axle shaft retainer plate and pull the axle out. Having a slide hammer really helps alot. Dont need to remove the diff cover. Just cut the retainer about 2/3rds in and hit with a punch, it will split easily.

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post #6 of 36 Old 08-19-2011, 05:11 PM
demonjames
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well shoot, i was going to comment on this since i just did it last weekend, but everyone beat me to the punch, so i'll just wish ya luck and have fun, make sure you pack the new bearings.
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post #7 of 36 Old 08-19-2011, 07:22 PM
Jeeples
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FWIW, I didn't use a press to put the new bearing retainer in place.

I had a length of fence post that I cut down to size and used a rubber mallet to 'press' the retainer onto the shaft. A couple solid whacks and it was ready to go.

Don't forget to replace the wheel seal too!

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This is easily the worst post, and thread, I have ever seen in 7 years of being on JF.
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post #8 of 36 Old 08-19-2011, 07:59 PM
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The bearings come with enough grease in them already to lube them until the gear oil comes down the tubes and hits them. There is no need to pack them up with grease.

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post #9 of 36 Old 08-19-2011, 08:32 PM
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Originally Posted by WiCkeDuDe View Post
The bearings come with enough grease in them already to lube them until the gear oil comes down the tubes and hits them. There is no need to pack them up with grease.
Well, I hope putting grease on it doesn't do any detriment its an old truck habit.
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post #10 of 36 Old 08-19-2011, 08:41 PM
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Quote:
Originally Posted by WiCkeDuDe View Post
The bearings come with enough grease in them already to lube them until the gear oil comes down the tubes and hits them. There is no need to pack them up with grease.
No. Just no.


The only thing that bearings are shipped in is a light coating of oil (generally a machinist oil) that prevents them from rusting during shipping.

Never install a bearing without packing it with grease, you will end up damaging it before the gear oil is able to make it down the tube and fully lubricate the roller surfaces.

Now, you don't have cram it full of grease, but at least take a finger full or two and run it over the rollers and inside the cage.

His: '00 WJ 4.7 Limited- Some stuff

Hers: '03 WJ 4.7 Laredo- Some more stuff


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post #11 of 36 Old 08-19-2011, 08:51 PM
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Originally Posted by Jeeples View Post
No. Just no.


The only thing that bearings are shipped in is a light coating of oil (generally a machinist oil) that prevents them from rusting during shipping.

Never install a bearing without packing it with grease, you will end up damaging it before the gear oil is able to make it down the tube and fully lubricate the roller surfaces.

Now, you don't have cram it full of grease, but at least take a finger full or two and run it over the rollers and inside the cage.
Cool, so my old truck habit was correct, in greasing them, though I grease the hell out of them
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post #12 of 36 Old 08-19-2011, 08:55 PM
Jeeples
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Eventually the grease heats up and drains back in the diff, but compared to how much gear oil is in there it won't affect anything.

I suppose you could also soak the bearing in gear oil while disassembling everything if you're leary about using bearing grease.

His: '00 WJ 4.7 Limited- Some stuff

Hers: '03 WJ 4.7 Laredo- Some more stuff


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post #13 of 36 Old 08-19-2011, 09:00 PM
4Tom
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Found this video
Shows you how to take it off
Unfortunately doesn't show pressing on bearings and reassembly


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post #14 of 36 Old 08-19-2011, 10:19 PM
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Yes just yes. Did I say they ship with oil? Read.

All the rear WJ bearings I have ever bought and installed were already full of grease. Did you see that I said grease not oil?

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post #15 of 36 Old 08-20-2011, 09:48 AM Thread Starter
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Quote:
Originally Posted by 4Tom View Post
Found this video
Shows you how to take it off
Unfortunately doesn't show pressing on bearings and reassembly

http://www.youtube.com/watch?v=w_Dfc...e_gdata_player

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Thank you for this, it really helped to clarify somethings.

Bone Stock 2002 Grand Cherokee Limited
4.7L HO, Changed Stock NV247 Quadra-Drive T-case to a 242 Selec-Trac Shifter and all.
Upgraded my rims to 5 Spoke Rogue from '11 Grand Cherokee
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