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Leaf Spring Q, Cause & Repair Process

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Old Nov 7, 2017 | 12:47 PM
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Leaf Spring Q, Cause & Repair Process

Since I first brought it home & looked at mine, I've noticed dozens of OBS trucks with the bottom left spring leaf as shown below.

While never seeming to be an issue, I plan on doing some work on the rear in the near future.

Any definitive known cause & positive corrective repair?

Thanks.



I p
 
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Old Nov 7, 2017 | 01:07 PM
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The only thing that aligns the overload leaf is the u bolts so there's a little wiggle room. Keeping the u bolts tight to the spring pad when tightening will help.
 
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Old Nov 7, 2017 | 01:21 PM
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I guess new bolts would be in order then.

Hate to break the suckers tightening.

Wonder if there is a wear pattern that would drag it back out.
 
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Old Nov 7, 2017 | 03:47 PM
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My truck has the same condition, and so did my last truck. I have thought about adding a set of clamps to hold the leaves in alignment. As to why they shift like that and the passenger side doesn't IDK.
 
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Old Nov 7, 2017 | 05:36 PM
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Since it's the shortest leaf, I don't know about a clamp, since that might stiffen the whole pack.

I swear I wonder if one air wrench on the line had the wrong torque setting.
 
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Old Nov 7, 2017 | 05:51 PM
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Hit it with a hammer to straighten it up, that is how lots of things were aligned on these trucks when the came down the assembly line. If you find it moves really easy then yeah you need new u-bolts, if not then you're just doing "maintenance".
 
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Old Nov 7, 2017 | 06:19 PM
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Thats so crazy! I just did maintenance on both sides of the truck last night.
 
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Old Nov 7, 2017 | 07:05 PM
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My '79 was like that for about twenty years while I had it. I asked and was told to just keep an eye on it unless it moved. Talk to a heavy truck shop that can recurve springs and see what they say.
 
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Old Nov 7, 2017 | 08:23 PM
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Will clean up the threads, dab of spray & back off the nuts a bit to take off the strain (jack up the frame) before tapping it back & re-torque.

Will see if it stays.

Maybe take it an a 10 mile trip through Jackson.

Equivalent to about a 1K trip on regular streets & highways.
 
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