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Old 07-19-2014, 04:35 PM   #1
ROI
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Need HELP with control arms!

I installed my new RK lower control arms and front track bar this morning. I cant figure out how to torque the jam nuts down while keeping the joint from articulating. It says you have to keep it centered but when I tighten the jam nut the joint goes to one side. Any ideas on keeping it centered while torquing the jam nut? Also do I really have to tighten the 1" jam nuts to 250ft lbs? I don't have a crows foot that will fit the jam nut so I cant get my torque wrench on it. I was hoping I could just tighten them with a crescent wrench and breaker bar as tight as possible.. Frustrating day trying to figure this out. Any help would be greatly appreciated. Jeeps sitting on lift in the shop while I figure this out..

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Old 07-19-2014, 04:41 PM   #2
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I installed my new RK lower control arms and front track bar this morning. I cant figure out how to torque the jam nuts down while keeping the joint from articulating. It says you have to keep it centered but when I tighten the jam nut the joint goes to one side. Any ideas on keeping it centered while torquing the jam nut? Also do I really have to tighten the 1" jam nuts to 250ft lbs? I don't have a crows foot that will fit the jam nut so I cant get my torque wrench on it. I was hoping I could just tighten them with a crescent wrench and breaker bar as tight as possible.. Frustrating day trying to figure this out. Any help would be greatly appreciated. Jeeps sitting on lift in the shop while I figure this out..
I had same issue with my adjustable. What I did with mine was find out what the track bar length should measure from center to center of each bolt hole, before installing. Wrenches down on jam nut as far as I could to keep tight and used lock tight, then installed on jeep. Bolted axel side then had someone push on axel to get bar to line up with frame side. Tightened and then retightened again once on ground.

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Old 07-19-2014, 04:59 PM   #3
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How were you able to tighten once installed? It looks like the bracket will be in the way of the wrench? I measured and got the to precisely what the rk instructions called for. Did you have to readjust later for alignment or were those measurements good?
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Old 07-19-2014, 05:02 PM   #4
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I'd contact RK, I'm sure they have suggested process to get the jam nut tightened and keep it centered.
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Old 07-19-2014, 05:06 PM   #5
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They are closed on the weekends.. Renting the lift now and have to pay for every hour it's there. I have the whole 3.5 mid arm lift installed just need to torque the control arms and track bar.
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Old 07-19-2014, 05:17 PM   #6
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And yes if the instructions say 250# then they need to be that tight. My RCV said 175# and that was a PITA!
I'd get it the best you can for now and contact RK on Monday, it's not the best choice but unless you come up with other options it would appear your only choice. You can always re-rent the lift if necessary.
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Old 07-19-2014, 05:19 PM   #7
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How were you able to tighten once installed? It looks like the bracket will be in the way of the wrench? I measured and got the to precisely what the rk instructions called for. Did you have to readjust later for alignment or were those measurements good?
I have a Rancho lift with adjustable track bar. I'm thinking they would be similar in design as far as track bar goes. I just used a box wrench on the jam nut. And yes my measurement has remained consistent from he times I have retightened after hitting a day of trails. Hope this helps.
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Old 07-19-2014, 05:54 PM   #8
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the RK arms are single end adjustable, use a pry bar to keep the heim centered and torque it as tight as you can. its not going to explode if you give it 100 foot pounds instead of 250. the worst thing that could happen is the jam nut gets a little loose and the heim gets misaligned.

I have had these same arms for years and who knows how much torque was on them, but its not 250ft/lbs.

250 ft/lbs is a lot.

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