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Old 02-26-2014, 10:32 PM   #1
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control arm guidance

Replacing my control arms with new OEM replacements, and I'm looking for any tips/suggestions anyone might have. Parts should arrive tomorrow, doing the work Saturday, jeeps already in the garage bathing in hourly doses of PB blaster. Is this as "simple" as remove/replace, or are there any alignment concerns, order to follow, tricks to make the process magically painless? I'm anticipating the usual seized bolt troubles, what else can I expect?

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Old 02-26-2014, 10:55 PM   #2
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You'll need to check & likely adjust the toe-in setting once you're done. The caster angle should still be fine with only 2.5" of SL. I'd replace them one at a time & you should be golden. If the axle moves a tad after removing an arm, you can usually move it enough with a ratchet strap to get it back into position. Sometimes all I need to do is have a helper rotate the tire a tad by pushing/pulling on the top of the tire to rotate it slightly in the needed direction which will slightly reposition the axle.

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Old 02-26-2014, 11:10 PM   #3
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Thanks Jerry. What's your take on cam bolts for the lower fronts? My caster isn't terrible, but it is slightly outside the range. I bought the cam bolt set figuring I'd have everything apart already, I believe they'll allow 1.5° adjustment +/-.
I'm hoping overall, replacing these should make an improvement. 3 of the bushings in the rear are all but non existent, which I'm guessing is a big part of the rear end sloshing side to side on bumps & turns.
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Old 02-26-2014, 11:14 PM   #4
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Biggest contributor to my rear end wagging was the rear track bar being shot.
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Old 02-26-2014, 11:14 PM   #5
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The caster angle isn't all that critical, what are you considering slightly out of the range? The bigger the tire, the less caster angle that is required.
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Old 02-26-2014, 11:19 PM   #6
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...cam bolts for the lower fronts...
Cam bolts are not typically a good idea on a vehicle that gets wheeled since they are known to come loose over time. The amount of caster correction it offers is not worth the risk it poses.
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Old 02-26-2014, 11:40 PM   #7
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Trackbar was the first thing I checked back there. Solid as far as I can tell.
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Left is 4.4, right is 4.6
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Good to know. I hadn't heard much talk about them, good or bad. This is Mama's toy more than anything. When it goes off road, its really rather tame. Definately look into these more before I slap 'em in, thanks.
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Old 02-26-2014, 11:42 PM   #8
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Sorry, first time on a keyboard I guess. I'm a mobile guy.
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Old 02-27-2014, 09:23 AM   #9
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Here is a real time saver tip for you:
Remove and install the new arms one at a time. You can do this with the Jeep sitting on the ground if you can fit underneath it. Use a ratchet strap or a come-along to reposition the axle when the bolt holes won't line up. Here's the real tip: Aways put the bolt through the axle end of the arm first and loosely put the nut on. Then connect your ratchet strap or come-along to that bolt to reposition the axle so that the frame hole lines up with the bushing in the arm. This way, you are directly moving the arm (with the axle attached to it) to line up the bolt holes on the frame end. It is way easier and faster to line them up this way than other methods, like using a floor jack to try to rotate or reposition the axle.
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Old 02-27-2014, 09:54 AM   #10
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Thank you sir! Appreciate the tips.
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Old 03-02-2014, 02:33 AM   #11
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Rears went smooth. Fronts...not so much. Front flag nuts on the uppers are spinning, can't reach both at the same time to stop them. Quitting for the night. Shot 'em again with PB, try again in the morning. Open to suggestions!
Oh, and the new front uppers have only one bushing, was I supposed to order those separate?
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Old 03-02-2014, 08:58 AM   #12
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Quote:
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Rears went smooth. Fronts...not so much. Front flag nuts on the uppers are spinning, can't reach both at the same time to stop them. Quitting for the night. Shot 'em again with PB, try again in the morning. Open to suggestions!
Oh, and the new front uppers have only one bushing, was I supposed to order those separate?
The second bushing is embedded in your axle housing. If they are in decent shape then I would leave them as is. Are you accessing the frame end bolts on the front UCAs through the hole in your frame?
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Old 03-02-2014, 10:51 AM   #13
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So far the only ones giving me trouble are the axle end bolts on the uppers. I was able to break the frame bolts free last night from the open side, flag nuts are on the trapped side but they held up. I'm heading out to resume shortly, after I shovel. Again.

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