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#1
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Spring pack movement
The Rat wrote:
> The rear leaf springs on my vehicle seem to be moving side-to-side in the > pack. Evidence for this is a clip (3/16" thick!) around the back of the > pack being spread apart. How is this possible? Is there a fix? > The only way I could see this happening is if the U-bolts have become loose somehow. good luck nate -- replace "fly" with "com" to reply. http://home.comcast.net/~njnagel |
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#2
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That means the u-bolts are loose. I recommend a fast fix before the
center pin snaps and the axle starts moving backward and the driveshaft falls out like happened to a friend recently. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's The Rat wrote: > > The rear leaf springs on my vehicle seem to be moving side-to-side in the > pack. Evidence for this is a clip (3/16" thick!) around the back of the > pack being spread apart. How is this possible? Is there a fix? |
#3
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The Rat wrote:
> The rear leaf springs on my vehicle seem to be moving side-to-side in the > pack. Evidence for this is a clip (3/16" thick!) around the back of the > pack being spread apart. How is this possible? Is there a fix? > > Do you drive like a manic? On my dirt track Camaro, I had the same problem in the first race - the little clamps that hold the springs in place weren't there - didn't notice - one leaf was rubbing on the tire. We used a BFRH* and made some homemade clips out of barstock and a bolt to hold them in place. Never thought to check the UBolts... but the whole rear end is coming out shortly anyway... (changing shocks and spring bushings) so we'll double check those...it's one of the few things I didn't break and have to disassemble last year... *BFRH = Big Fancy Rubber Hammer. I don't recommend hammering on springs. btw, what kind of car? |
#4
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If/when the center pin snaps, the axle can/will shift back and the
driveshaft will fall out on the ground. You can't have any movement where the springs come together or parts like the pin will fatigue and snap. Are there any threads left on the main U-bolts? If the nuts are bottomed, then you do have the wrong ones. The last set I saw fail was tightened by a couple large people with 2' power bars on 'used' u-bolts. Buddy then had the driveshaft fall out in a swamp 25 miles from the nearest phone coverage while being lost in the deep bush trying to find a camp. He was lucky and heard us on the CB so we could track him down and show up to help. The u-bolts were no longer any good. They had lost their temper because they were stretched when a shop or the manufacturer installed the stock springs. New u-bolts are cheap..... Mike The Rat wrote: > > I got under today and put a 2 foot bar on those bolts. Can't move them. > No sign of the U-bolts being loose either, though there is a gap between > the U-bolt and the spring pack, like the wrong size U-bolts were used. > Could this be a potential cause? Could the center pin actually be broken > or deteriorated, allowing movement? > > On Tue, 22 Feb 2005 12:12:58 -0500, Mike Romain wrote: > > > That means the u-bolts are loose. I recommend a fast fix before the > > center pin snaps and the axle starts moving backward and the driveshaft > > falls out like happened to a friend recently. > > > > Mike > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee > > 235 BFG AT's > > > > The Rat wrote: > >> > >> The rear leaf springs on my vehicle seem to be moving side-to-side in > >> the pack. Evidence for this is a clip (3/16" thick!) around the back of > >> the pack being spread apart. How is this possible? Is there a fix? |
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