Transfer case Np231 broken fork 2 times

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Sep 18, 2010 | 10:23 PM

macro

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Model: Cherokee

Transfer case Np231 broken fork 2 times

I have an np 231 transfer case and changed the fork last month. Now, after driving around 2000 mile, the fork is broken again!

The pinion making noise and need to be replaced. Does pinion affect the transfer case?

Thanks for reading my post..

Sep 23, 2010 | 10:48 AM

macro

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Model: Cherokee

no answer!

Sep 23, 2010 | 12:13 PM

THENNING

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From: PA

Year: 1999

Model: Cherokee

Engine: 4.0 6 cylinder

more info on jeep...year, lifted, etc.

Sep 26, 2010 | 12:09 PM

macro

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Model: Cherokee

THANKS THENNING

actually the car is GMC Yukon 1994 manual transmission

it is not lifted but the tire diameter changed to 17inch

Sep 26, 2010 | 12:22 PM

SeriousOffroad

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Joined: Apr 2008

Posts: 13,952

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Model: Cherokee

I'm gong to go out on a limb here here and guess that you mean the wheel is a 17".

Does it break when shifting or ????

Possible causes:
Improperly adjusted linkage.
Damaged prior to installation.
Improper t-case assembly.

Sep 26, 2010 | 11:37 PM

firstime00XJ

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From: MI

Year: 2000

Model: Cherokee

Engine: 4.0 I6

I didn't think the NP231 came on a Yukon, I thought it was a 205 or 207...what led up to the failure of the transfer case? Anytime you use wheel/tire combinations outside of the manufacturer recommended specifications, you run the risk of causing damage; however, I don't think the wheels caused the pinion to start to make noise. The vehicle is 16 years old.