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Old 08-24-2010, 10:06 PM
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loosing alignment shims

in march i replaced all my control arm bushings bought 4 new tires and had it aligned in may i was getting a popping noise from the front end when hitting the breaks and it would pull to the left the shims fell out... happened again in june.... and again now i really dont want to have this thing aligned every 2 to 3 months its expensive any ideas why they keep falling out.... also it was a different alignment shop that did them this last time as they fell out in Nashville TN and i live in Alabama. is it something wrong with the bolts keep making them loosen up... looking for ideas here please help

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Old 08-24-2010, 10:23 PM
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lost shims

Is this a lowered vehicle by chance ?
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Old 08-24-2010, 10:35 PM
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Quote:
Originally Posted by Classiccruiser
Is this a lowered vehicle by chance ?
nope factory ride height its a 1970 pontiac catalina... only the driver side that they are falling out of had one actually gave me a flat had to replace the tire..
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Old 08-24-2010, 10:45 PM
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Shims

If the car was ever in a wreck , it is possible that that side of the car has a excessive amount of shims in it to correct alignment, thus , when on a bumpy road or pothole is hit , the shims either loosen up or fall out....Without going thru the whole process of checking frame and such , figure out how many shims are on that side your having troubles with , if it is alot , then you may have to remove some of the shims...lets say 3/8" worth of shims... and then replace those with a (1) piece Solid Spacer..3/8" wide drilled to slide over snugly....that cuts down on the loose flex on excessive shimmed vehicles....had a 78 chevytruck i had to do that with , that was lowered..worked great for many years...
good luck
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Old 08-24-2010, 10:56 PM
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Quote:
Originally Posted by Classiccruiser
If the car was ever in a wreck , it is possible that that side of the car has a excessive amount of shims in it to correct alignment, thus , when on a bumpy road or pothole is hit , the shims either loosen up or fall out....Without going thru the whole process of checking frame and such , figure out how many shims are on that side your having troubles with , if it is alot , then you may have to remove some of the shims...lets say 3/8" worth of shims... and then replace those with a (1) piece Solid Spacer..3/8" wide drilled to slide over snugly....that cuts down on the loose flex on excessive shimmed vehicles....had a 78 chevytruck i had to do that with , that was lowered..worked great for many years...
good luck
i know it has been wrecked 3 shims on each bolt 2 thick ones and one thinner other side is the same though i had a power stearing leak above it im sure the excessive lube isnt helping either
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Old 08-24-2010, 11:00 PM
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didn't do it before the work had the car 4 years before that i beleave the alignment shop only added 1/16th what it was before maybe 1/32
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Old 08-25-2010, 12:31 AM
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Sounds like the self locking crimp nuts on the studs no longer hold their position, time for new nuts. Should be torqued up tight enough they can't come loose anyway though.
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Old 08-25-2010, 10:00 AM
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It is very hard to tighten those nuts sometimes, I would say replace the nuts and be sure they are TIGHT!

Brian
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Old 08-25-2010, 11:32 AM
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ok so i took it had it aligned again then went to tractor supply bought 2 extra nuts and installed them behind the originals with locktight hopefully this works
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Old 08-25-2010, 02:02 PM
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Another smart move would be to measure and record the thickness of the shim, that way if they are lost again you don't have to head to the alignment shop, just replace them again with the same thickness stack.
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