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Old 01-25-2010, 02:18 PM   #1
Newb
 
Join Date: Jan 2010
Location: Spring Hill, TN
Posts: 5
Noob with Differential ???s

I just acquired a 1989 Jeep Wrangler wth ~157K. It looks like most of the vehicle is stock with the exception of a lift (~2 - 3 inches) and the 31" tires.

The shaft to the front differential is gone and the previous owner said the gears sounded kind of 'crunchy'. Unless I am eating Rice Crispies, I'm guessing 'crunchy' is not a good thing in differential...

It seems to run well, with the exception of a little inconsistent whining. Or maybe it is consistent and I just can't hear it as I am accelerating.

Any suggestions on where I should start with the diff? New innards, new axle?

Thanks for enlightening me with your knowledge.

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Old 01-25-2010, 02:27 PM   #2
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Join Date: Sep 2009
Location: quinc,il
Posts: 395
I would say take off differential covers and visually inspect them! if alot of metal in fluid bad sign! if you can see unusual wear or broken teeth another bad sign. no way to know till you look though!

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92 wrangler yj 4 in lift, sye, posi lock, 35x12.50x15 on outlaw rims. much more to do!!
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Old 01-25-2010, 02:34 PM   #3
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Join Date: Jan 2010
Location: Spring Hill, TN
Posts: 5
Thx Jeepers. Without sounding clueless (maybe it is too late for that), when I pop the covers andthe fluid drains (or doesn't), check it for metal filings. If there is an absence of metal in the fluid and the gears don't appear to be stripped or loose, I 'might ' be in good shape?

Since I am missing that drive shaft, do you have an recommendations on where to start my search for a replacement?

Thanks!
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Old 01-25-2010, 02:58 PM   #4
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Join Date: Sep 2009
Location: quinc,il
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When you take off covers you will loose all you fluid! check for metal shavings
as that is easiest sign of problems then inspect teeth on gears, ring pinion and spyder gears But you will have to put new sealant around covers and add new fluid I think it takes 2.5 bottles per differential or untill at bottom of fill hole! If you know someone who has looked at these before, might wanna have them look. as for a new drive shaft try a junk yard. or for newer and stronger you can look at sever diffrent web sites. 4wd.com or quadratech.com. I would do a search and compare prices! Good luck and let us know!
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92 wrangler yj 4 in lift, sye, posi lock, 35x12.50x15 on outlaw rims. much more to do!!
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