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Unread 02-06-2013, 02:19 PM   #1
NCjeepgirl83
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93 ZJ with rear diff/axle probs

Hey all,

My family has a 93 ZJ that's been in our family since new. It has sentimental value to our family and we have discovered that it has a bad pinion bearing in the rear axle assembly. What would you all suggest we do that would be a cheaper alternative than to pay $5k for a new one? The mechanic at our local Firestone says that it's a very common problem with Jeeps this age...

Should we go to the dealer? The Firestone guy said it would cost $2-3,000 to repair the existing axle, and we'd prefer not to have to pay more than the car's worth, if that makes sense.

What would you do in our shoes? We don't know of anyone with a lift who can help us out, and we're not mechanically inclined, so we'd end up having to pay whatever the cost...

Thanks very much in advance!

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Unread 02-06-2013, 02:40 PM   #2
fast_cobra_427
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That's a ridiculous amount of money to replace pinion bearings. Do yourself a favor and go to a true repair shop. Not one of those corporate money hogs. It is common, but it's not really all that difficult of a job.
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Unread 02-06-2013, 02:44 PM   #3
Texas ZJ1
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For 2 to 3K, you can buy a new super 35 with detroit locker and have it installed. That Firestone guy is ripping you off. Those costs are his standard $ per hour and then a good markup on your parts.

Hunter
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Unread 02-06-2013, 03:02 PM   #4
Texas ZJ1
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Here's a link to quadratec as a reference only. You may find better prices if you look around.

http://www.quadratec.com/category/Je...n/54/index.htm

http://www.quadratec.com/products/16120_110X_PG.htm

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00 4.7 Laredo...stock

94 5.9 Laredo 6.5 RE lift with 35 Maxxis Bighorns
and 33 Bridgestone Duelers
Detroit and true trac
Red Jeep Club Member
REDNECK JCM
Texas Jeep Owner #6
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http://www.kevinsoffroad.com/
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For your performance needs:

kolak@kolakperformance.com
480.998.3661
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Unread 02-06-2013, 03:05 PM   #5
Rich93ZJ
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Any reputable shop should charge around 300-800 depending on if you actually need to replace the pinion and ring gears. If its just the bearing, I wouldn't pay more than $300. Ironically, I just finished tearing the axle out of mine to do a rebuild.
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Unread 02-06-2013, 03:48 PM   #6
Texas ZJ1
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Rich is correct. Plus, if you are going to open the diff and work on the pinion, you might want to add a traction aid like a limited slip or locker. The diff is already open for business.

Hunter
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00 4.7 Laredo...stock

94 5.9 Laredo 6.5 RE lift with 35 Maxxis Bighorns
and 33 Bridgestone Duelers
Detroit and true trac
Red Jeep Club Member
REDNECK JCM
Texas Jeep Owner #6
USN Jeep Club #4
http://www.kevinsoffroad.com/
602.841.3355

For your performance needs:

kolak@kolakperformance.com
480.998.3661
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Unread 02-06-2013, 03:51 PM   #7
xmonger
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Firstly, the last place I would go for differential work would be Firestone.

Secondly, $2-3k is outright thievery.

Post for a shop recommendation in your local forum on this site. A recommended 4x4 shop will do it right and save you a ton of money and hassle.
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Unread 02-06-2013, 04:06 PM   #8
Texas ZJ1
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Here's an idea? Angie's list?

Hunter
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00 4.7 Laredo...stock

94 5.9 Laredo 6.5 RE lift with 35 Maxxis Bighorns
and 33 Bridgestone Duelers
Detroit and true trac
Red Jeep Club Member
REDNECK JCM
Texas Jeep Owner #6
USN Jeep Club #4
http://www.kevinsoffroad.com/
602.841.3355

For your performance needs:

kolak@kolakperformance.com
480.998.3661
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Unread 02-10-2013, 07:33 AM   #9
znm1994
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2-3k is wayyyyyyy too much.. you can do it yourself for 1/4 the amount. Its not that hard either. I'm getting ready to rebuild mine
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Unread 02-10-2013, 08:10 AM   #10
riot1987
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try to find an honest mechanic. The entire vehicle is worth 3000$. That mechanic is a chump
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Unread 02-10-2013, 11:10 AM   #11
ratmonkey
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That price is beyond insane.
Just doing the differential bearings should be a 500$ job with parts.
Don't just do the pinion bearings, carrier bearings should be done as well. Then it'll be good for another 200k.

Replacing just the bearings is under a 3hr job.
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Unread 02-10-2013, 02:26 PM   #12
ajmorell
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Quote:
Originally Posted by ratmonkey View Post
That price is beyond insane.
Just doing the differential bearings should be a 500$ job with parts.
Don't just do the pinion bearings, carrier bearings should be done as well. Then it'll be good for another 200k.

Replacing just the bearings is under a 3hr job.
X2. Might as well just do a full overhaul, bearings + races and seals at a minimum. I think I paid about $500 to have it done on my zj way back when.
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