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Old 04-27-2008, 02:22 PM
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Default control arm grinding- how much is enough?

I've got a pretty good clunk when I hit bumps (same as Matt), how much do I take off the top of the control arm? Just the center strip? or dig into the meat of the arm a little? This is tough stuff, to grind, btw..
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Old 04-27-2008, 02:39 PM
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Don't hit bumps - duh!
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Old 04-27-2008, 04:27 PM
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You can go about 1/8-3/16 but not much more in MHO. Good luck with this. Robbie
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Old 04-28-2008, 08:16 AM
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Did you disconnect the tie rod to get to the top of the control arm?
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Old 04-28-2008, 08:17 AM
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Ok well I left the DS about like in the picture above, but I've taken the passenger side down until I've got one flat plane all the way across the top. Two other steps inbetween still yielded clunking, I did the last pass last night and haven't tested it yet.

Also I learned something- I didn't have to take the tie rod off (drag link?) after all, if you just turn the wheel then put the side you want to grind downhill you can sneak in with the grinder upside down.. shoot there's an hour I wish I had back.

If I still get clunking, I'm temped to pop the PS end of that tie rod off again then stick a washer in there and reassemble.. bad idea?
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Old 04-28-2008, 08:20 AM
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Quote:
Originally Posted by Hulk View Post
Did you disconnect the tie rod to get to the top of the control arm?
I did, also removed the swaybar drops then lifted it up and out of the way, and realized later I didn't need to do either one. Just flex the front a little and you can sneak in on the downhill side..
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Old 04-28-2008, 08:24 AM
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Bad idea, as the hole is tapered and will then not seat well(washer under the TRE).

Are you sure it is not just the TRE's flopping(when they loosen up some, not worn out they will flop from front to back causing a clunk) that is causing the clunk? Put some grease on the arm and turn the steering wheel back and forth and see where the grease is rubbed off. This is where you need to grind if needed.
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Old 04-28-2008, 08:46 AM
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Ok, thanks Robbie.. I'll scrap the washer idea. I'm hoping my clunk is just the tie rod flopping from one side to the other, courtesy of the control arm.. is that correct? Yes it's annoying, but as long as I'm not putting a bunch of load on the TRE or worse, those bottom 4 bolts on the knuckle, then I'm going to worry about it a little less.

I will likely be tossing the grinder & an extension cord into the truck for Moab, in case I need to take it down some more.
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Old 04-29-2008, 09:38 PM
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Matt I'm down this far on the PS now and I still have a clunk. I'm going to shoot for about twice as deep tomorrow and hope that does it.. how far did you go?
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Old 04-29-2008, 10:20 PM
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I haven't done any grinding yet. It only clunks when I go through a big dip. I may do some grinding in the morning -- or I may throw everything in the truck and drive to Moab. I'm leaning towards the latter choice.
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