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Unread 06-05-2013, 06:40 PM   #1
HawksWin
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2000 XJ Cherokee 
 
Join Date: Jun 2013
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"Clunk" When going from Reverse to Drive

This only happens when going from reverse to drive. When you do it, its a big clunk. Now if i go reverse to neutral, let it get out of gear then drive, its not as bad. Should i be concerned about my rear diff gears? I had a friend shift while i laid underneath and the rear end jumps. I noticed the front U joint on the rear driveshaft is a little loose when in neutral, but nothing that would cause this big of a clunk. Any suggestions?

Thanks,
Trevor

Also, Its a 2000 Cherokee Sport 4.0 I6

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Unread 06-05-2013, 07:03 PM   #2
CJ7-Tim
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If the u-joints are worn or loose, replace them. Some clunking when shifting between P, D, or R is normal. You can try pausing in NEUTRAL for about 5 seconds, and the clunking should be less.
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Unread 06-05-2013, 07:10 PM   #3
dmill89
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X2 on the U-joints, also check the transmission mount it is often a combination of the two, the u-joint allows the movement and a worn transmission mount amplifies it and makes it more noticeable.
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Unread 06-06-2013, 04:28 PM   #4
HawksWin
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Very good, so its nothing I should be overly concerned about?
Thanks guys,
Trevor
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Unread 06-06-2013, 04:45 PM   #5
dmill89
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Quote:
Originally Posted by HawksWin View Post
Very good, so its nothing I should be overly concerned about?
Thanks guys,
Trevor
Don't be deathly concerned, but don't let it go either. Sooner or later those U-Joints will fail if not replaced and your drive shaft will go bouncing down the road behind you.
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Unread 06-07-2013, 02:40 PM   #6
CCKen
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Pull the drive shaft and see if the yoke splines need grease. Use a cable tie to reattach the rubber boot to the shaft.

If you need u-joints, use Dana-Spicer u-joints.

Replace the u-joint clamps and bolts with new parts when going back together.

Edit: Before removing the drive shaft, paint an alignment mark on the drive shaft yoke and the rear differential pinion yoke for reference at reassembly.
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Unread 06-07-2013, 03:05 PM   #7
wgirvine
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Quote:
Originally Posted by HawksWin View Post
I noticed the front U joint on the rear driveshaft is a little loose when in neutral, but nothing that would cause this big of a clunk.
There should be ZERO play in the U-joints.
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