4wd not disengaging/partially engaged

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Dec 20, 2015 | 07:16 AM

#16

cruiser54

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Joined: Aug 2011

Posts: 43,971

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From: Prescott, Az

Year: 1990

Model: Cherokee (XJ)

Engine: 4.0

Quote:

Originally Posted by adamj

90 with np231 and CAD.
231 is better than the 242, right?

For some applications, yes.

I prefer the versatility of the 242 in that it can be left in Fulltime and forgotten about when the road conditions change from dry to slippery.

Feb 2, 2016 | 11:59 AM

#17

adamj

Thread Starter

Junior Member

Joined: Jun 2014

Posts: 96

Likes: 1

From: California

Year: 1990

Model: Cherokee

Engine: 4.0L

Update: the problem is the axle shaft u-joints, and it looks like I'll need to replace both sides.

Any tips for this job? Or anything else I can do while I have everything apart?

Feb 2, 2016 | 12:06 PM

#18

toasterknight

CF Veteran

Joined: Jan 2015

Posts: 1,508

Likes: 5

From: Oregon Coast

Year: 1999

Model: Cherokee

Engine: 4.0L I6

Unit bearings might as well be done at the same time because you already have them out.

Feb 2, 2016 | 01:23 PM

#19

adamj

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Junior Member

Joined: Jun 2014

Posts: 96

Likes: 1

From: California

Year: 1990

Model: Cherokee

Engine: 4.0L

Good idea, they could use a re-packing, I don't think it's been done in a while.
What about the axle seals? Is this difficult to do?

Feb 2, 2016 | 04:20 PM

#20

toasterknight

CF Veteran

Joined: Jan 2015

Posts: 1,508

Likes: 5

From: Oregon Coast

Year: 1999

Model: Cherokee

Engine: 4.0L I6

Quote:

Originally Posted by adamj

Good idea, they could use a re-packing, I don't think it's been done in a while.
What about the axle seals? Is this difficult to do?

Axle seal require removing the diff. You don't repack unit bearings. They are a sealed unit. Replace them if the are old of install them if its been done recently.