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Post by thumper on Nov 15, 2015 15:45:45 GMT -4
Hey guys, I am having an issue tightening down the flexible joints on my rock krawler control arms.  The jam nut on the adjustable end has to be torqued to 260ft/lbs! I can't torque the jam nut down hard enough without moving the joint out of alignment with the fixed ends... Any tips? Without having two vices on one table |
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eastcoastcam
Jeeper
Is it time to go wheeling yet??
Posts: 1,690
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Post by eastcoastcam on Nov 15, 2015 18:01:15 GMT -4
Snug them up on the bench, install them, then torque them in place on the Jeep?
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Post by thumper on Nov 15, 2015 18:52:58 GMT -4
Snug them up on the bench, install them, then torque them in place on the Jeep? That may work, I will have to check and see if there is enough room to torque it down with it installed |
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Post by TomWood on Nov 16, 2015 12:19:31 GMT -4
Snug them up on the bench, install them, then torque them in place on the Jeep? I was thinking the same thing James. Hopefully there is enough room to do this. |
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eastcoastcam
Jeeper
Is it time to go wheeling yet??
Posts: 1,690
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Post by eastcoastcam on Nov 16, 2015 13:11:38 GMT -4
Snug them up on the bench, install them, then torque them in place on the Jeep? I was thinking the same thing James. Hopefully there is enough room to do this. The lowers should be fine, but the uppers may be tough for access... All easier done on a hoist, of course... |
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Creepy
Administrator 
Dartmouth
Posts: 18,718
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Post by Creepy on Nov 17, 2015 12:08:21 GMT -4
Its hard to do.
You kind of have to have them out of alignment and then they come straight as you tighten them. Doesn't matter if its on the Jeep or in a vice.
Instead of 260ft/lbs i get 'em tight as I can with a big wrench and pipe, then tack weld. Its easy to break a little tack weld with a big wrench, but it will never vibe loose.
The intent of the huge torque needed on the jam nut is because they love to come loose, the thread is always seeing twisting force, it loosens the jam nut....which damages the internal threads...which makes it come loose more often, repeat....until tack welded!
Something like 100ft/lbs and a tack weld works fine.
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justajeep
Moderator 
Valley - VP
Bear River, NS
Posts: 7,214
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Post by justajeep on Nov 17, 2015 17:14:35 GMT -4
What Jan said, because rock krawler arms will strip the threads in the the arm!
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