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12-24-2019, 04:00 PM | #1 |
Senior Member
Join Date: Jan 2019
Location: Florida Panhandle
Posts: 585
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Shackle Bore Alignment
Just installed a new rear spring while unsprung. Looks like the spring and perch bores will not align for the insertion of the shackle shafts unless the spring is fully spread with a full length spreader and the axle is lifted to the natural ride height. Don't think I can safely do the job with a half spring spreader. Any insight on aligning the spring and perch bores ?
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12-24-2019, 06:35 PM | #2 |
Senior Member
Join Date: Oct 2019
Location: Virginia
Posts: 140
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Re: Shackle Bore Alignment
I just did this with a full length spreader, the car on jack stands at the frame just behind the rear running board bracket, and a floor jack under the differential just to replace one shackle. The procedure is in Les Andrews' red book. There is a lot of power in that spring. The spring spreader was beefy but it was bowed like a barbell with a guy lifting 500+ pounds. I had to get a pipe extension for leverage to turn the nuts on the spreader. I also had to use a pry bar to to extend the other installed shackle to the horizontal position for maximum length to reach the second shackle. It worked, but it made me nervous. Be careful and use the right tools. I changed a bushing and I could not have done it without the bushing driver tool (about $10 online).
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12-24-2019, 07:58 PM | #3 |
Senior Member
Join Date: Oct 2015
Location: Bay City Michigan
Posts: 1,050
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Re: Shackle Bore Alignment
I hook up everything except the last shackle and use the spare tire jack from a truck and a block of 4x4. that spring doesnt weigh as much as a truck. spins easy. travels right over. lift the axle with a floor jack. hard to remember might have had a chunk of wood under it to lift spring off the axle. then drive that out with a hammer.
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12-26-2019, 09:34 AM | #4 |
Member
Join Date: Aug 2013
Location: Long Island NY
Posts: 72
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Re: Shackle Bore Alignment
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