Alignment-bad Eccentric?
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Beginning Member
Joined: Sep 2007
Posts: 48
From: Buffalo NY
Alignment-bad Eccentric?
I recently got new tires put on my car, I went to get an alignment today and he told me that he couldn't fully adjust it because I had a bad "eccentric". Apparently, the eccentric is what adjusts the tilt of the wheel on the ground. Can someone please clarify what this is exactly and the difficulty level in replacing it, thank you.
Starting Member
Joined: Jan 2014
Posts: 101
From: Southern Ontario
sounds like he means the camber bolts. It's the upper control arm bolts, that essentially adjusts the top of the tire inwards or outwards from the truck (adjusts the camber). Not too bad to change; pull the tire, undo upper balljoint, possibly unbolt the brake line and abs wire from the control arm, then undo the bolts holding the control arm to the frame. Those are the bolts you're replacing. It will help if you take the brake disc off and hang the caliper somewhere out of the way, but I don't know if that's necessary or not
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Beginning Member
Joined: Sep 2007
Posts: 48
From: Buffalo NY
I dont see why I have to replace the camber bolts. I had the alignment done at firestone and Im pretty sure the guy had no idea what he was talking about. I am going to PB blast the hell out of the bolts and have the dealer align it. The upper control arm is not yet bad and I dont want to start replacing parts when Im not even sure of the problem.
Starting Member
Joined: Jan 2014
Posts: 101
From: Southern Ontario
MOOG® K6367 - GMC Jimmy 2000-2002 Alignment Camber Bolt Kit
That's what the bolt looks like. There's a long slot in the control arm mount, so the bolt can mount at various positions. Basically the control arm can mount higher or lower, whichever is needed to bring the tires' camber to zero. If that flat edge on the bolt is worn or if the bolt is seized, then it will need a new one. The control arm itself doesn't exactly "go bad," unless it's bent or cracked. The bushings can go or the balljoint but not the arm itself.
If you change the bolt yourself then it's $20 for the bolt kit then whatever for an alignment.
OR
go to a different alignment shop and see what they say about the bolts that are on there now.
That's what the bolt looks like. There's a long slot in the control arm mount, so the bolt can mount at various positions. Basically the control arm can mount higher or lower, whichever is needed to bring the tires' camber to zero. If that flat edge on the bolt is worn or if the bolt is seized, then it will need a new one. The control arm itself doesn't exactly "go bad," unless it's bent or cracked. The bushings can go or the balljoint but not the arm itself.
If you change the bolt yourself then it's $20 for the bolt kit then whatever for an alignment.
OR
go to a different alignment shop and see what they say about the bolts that are on there now.
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