Front Shims causing problems - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 05-30-2002, 11:37 AM
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Front Shims causing problems

It seems as though the front axle of my truck is shifting. I can look at the springs and see where the plate has shifted. I tightened the u-bolts again, but it only lasts for a couple of days. The shims are being pushed out allowing more room for play and causing the U-bolts to appear loose when they're actually in the same place. Upon closer inspection, I noticed the front shims are cracked which would allow them to move. Is there anyone who makes a weld on steel shim or do I need to just make one myself? Is this a good idea?
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post #2 of (permalink) Old 05-30-2002, 02:08 PM
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Re: Front Shims causing problems

Jegs sells steel stackable shims in 2* increments. That's all I got though.
post #3 of (permalink) Old 05-30-2002, 10:50 PM
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Re: Front Shims causing problems

Tuff Country also sells the wedge shaped shims in different increments. On my 3/4 ton, the one side apparently had been loose and the shim was almost worn flat! Tuff Country advised me that I didn't need any shims with their new springs.
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post #4 of (permalink) Old 05-31-2002, 06:38 AM
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Re: Front Shims causing problems

Is there any problem with me making shims and welding them on? I have the access and the knowledge to make them. I was just wondering if it's a good idea to weld them like that, or if it will cause other problems I hadn't thought of.
post #5 of (permalink) Old 05-31-2002, 02:46 PM
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Re: Front Shims causing problems

I don't see a problem making steel shims yourself... that's a lot of grinding on steel plate, though.

If the shims are cracked, that's the problem. It could also be that the hole in the center that the center pin fits through is whopped out looking like an oval. Another thing, maybe the canter pin on the spring pack broke off...
post #6 of (permalink) Old 05-31-2002, 09:34 PM
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Re: Front Shims causing problems

How many inches are these springs? I never had any shims on either of my old trucks and both had 4" springs up front. Are you running bigger than that?
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post #7 of (permalink) Old 06-03-2002, 06:51 AM
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Re: Front Shims causing problems

Mine are 6" springs. They worked fine when I had the automatic in it. I didn't need shims. Then, I put a 4-speed in it and since the 4-speed is shorter, the front shaft was put at a steeper angle so shims were needed.
post #8 of (permalink) Old 06-03-2002, 12:09 PM
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Re: Front Shims causing problems

Well, you may be able to have some, or make some, from some old leaf spring leafs. I made the 2" rear blocks on my 77 from old leaf springs. They were cut down to block lenght and then welded around the gaps. The I just put in a longer pin to hold em on with the spring pack. You could just get by with a steel block that is shimed and drilled to allow you to pin it to the front pack though. I just happened to have the leafs handy at the time. In any event, I would try to aviod welding the shims to the axle housing. You may want to do something different later on down the road and then it will be a pain to get em off. About the only other solution is to have the spring perchs cut and moved so that the axle is rotated to the correct spot, but again, it's more of a pain should you change your mind later on.
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