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Unread 03-28-2005, 02:32 PM   #1
greasefingers
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1994 ZJ 
 
Join Date: Sep 2003
Location: Northern VA, USA, NJ
Posts: 8,237
Rear clunking noise solved..finally

I finally found a loud clunking noise in the Jeep. It has been driving me crazy for three months. It turns out that it was one of the lower rear shock bolts. I had to break the bolt to get it off. Since it is a ½” OD bolt I used a breaker bar and ½”-drive sockets. Once off, I could see that the outer diameter of the bolt had worn down to a much smaller size. When I would hit a bump, the shock would travel in the slop first, before compressing and doing it’s normal job. This created a clunk clunk clunk. I cannot explain why the bolt wore so badly. The shock only partially rotates around this bolt by a couple of degrees. Maybe rust and dirt get in there?

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Cheers Steve

94 Black Laredo 4-Liter with QuadraTrac (42RE trans & NP249 TC) 200,000 + miles purchased new

88 Cherokee 2-door with 5speed manual 139K miles(deceased) purchased new
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Unread 03-28-2005, 03:18 PM   #2
HighLonesome
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1995 ZJ 
 
Join Date: Feb 2005
Location: New Mexico
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The stock bolts are 12mm tapered...don't ask me why they are tapered.

Had the same thing happen. Pressed some new 5/8" hourglass poly bushings in the shock hoops. Then pressed in some 1/2" ID bushing sleeves out of a Rancho install kit. Then finished up with 1/2" grade 8 bolts. Haven't heard anything from the rear suspension for years.

Link to bushings 9.8107
http://www.energysuspension.com/pages/sk_bsp1.html
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Unread 03-28-2005, 08:32 PM   #3
greasefingers
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1994 ZJ 
 
Join Date: Sep 2003
Location: Northern VA, USA, NJ
Posts: 8,237
yea...real hillbilly setup on the stock set-up. I got them on good & tight with some of my own tricks. It aint going nowhere now.
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Cheers Steve

94 Black Laredo 4-Liter with QuadraTrac (42RE trans & NP249 TC) 200,000 + miles purchased new

88 Cherokee 2-door with 5speed manual 139K miles(deceased) purchased new
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Unread 01-05-2011, 09:44 PM   #4
jdk3034
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Join Date: Nov 2005
Location: Pittsburgh
Posts: 280
sorry to bring up an old thread, but can you replace the factory tapered lower rear shock bolts with a standard shank 10.9 12mm bolt?
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