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Old 01-13-2014, 12:25 PM   #1
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Methods for torque on Jam nuts

I am curious as to what others have done to get torque on jam nuts. I have an RK 2.5 Max Travel lift to install on my '13 JKU and the torque values that RK gives are pretty big.

Just curious how others have done theirs i.e. methods to get the jam nuts really torqued down.

Include control arms and track bars.

Thanks.

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Old 01-13-2014, 01:43 PM   #2
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I used a really big wrench and got them as tight as I could. I then marked them with a paint marker so I will know if they move.

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Old 01-13-2014, 01:48 PM   #3
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Whatever fits in each application--large crescent wrench, pipe wrench, or correctly sized open-ended wrench. Crank it until you blow a blood vessel.

Not hard.
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Old 01-13-2014, 01:51 PM   #4
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big ass monkey wrench
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Old 01-13-2014, 03:27 PM   #5
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I run in to this a lot in my job fixing those big yellow buses, and believe it or not, I just use a crowsfoot wrench on my torque wrench.

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Old 01-13-2014, 04:14 PM   #6
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I figured I would pick up a big crescent from Harbor Freight. However, I was curious if ya'll did it once they are installed and you just got under there and crank on the wrench or if you had some other means. Not a whole lot of room to get good leverage to really pull on it under there.
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Old 01-13-2014, 04:22 PM   #7
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Agreed, there is not much room.
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Old 01-13-2014, 04:50 PM   #8
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I installed the RK 3.5 mid arm yesterday. We measured out the lower control arms and installed them to ensure proper fit. After that we dropped one end at a time to torque the jam nuts since we could not get a wrench on them while they were installed.
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Old 01-13-2014, 06:23 PM   #9
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I used loctite on the jam nut threads as recommended by RK. Just be sure not to get any in the threads that go into the control arm/trackbar.
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Old 01-13-2014, 07:02 PM   #10
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And use anti seize on the part that does go into the control arm. I used this wrench...
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Old 01-13-2014, 07:27 PM   #11
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As tight as you can get them. Some use a big ass wrench. Others set length. Remove, put in a vise and tighten. Whatever works ... Just get them tight.

Bought this at HF. Makes quick work of jam nuts
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Old 01-13-2014, 07:37 PM   #12
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I agree with Kjeeper, but will add a trick...tighten the jamnut down GNT (good and tight.) Then, take a piece of wire around 2" long or so, wrap around the threads behind the jamnut, insert both ends of wire into power drill....spin until supertight. Take snips, and cut off 75% of the pigtail, and fold over the rest. Those mofos ain't goin no place. This technique is used on turbo manifolds to keep the nuts from backing off, and it's very effective. If you can get stainless steel wire, it will keep things nice and corrosion free.

0.041" Stainless Steel Lock Wire, 1 Lb. Coil

1lb of wire is enough to secure every control arm on this website.
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Old 01-13-2014, 08:30 PM   #13
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^ interesting
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Old 01-13-2014, 10:48 PM   #14
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Yup. Excellent trick to keep nuts in place. One small tip, if you use a powerful drill, go slow, as it will spin the wire until it breaks. You can do a few loops around the threads and tuck it in, but you get the idea. It's a cheap and simple fix, and when you need to adjust, just snip the wire off and you're good to go.
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Old 10-01-2014, 05:21 PM   #15
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Quote:
Originally Posted by NFRs2000NYC View Post
I agree with Kjeeper, but will add a trick...tighten the jamnut down GNT (good and tight.) Then, take a piece of wire around 2" long or so, wrap around the threads behind the jamnut, insert both ends of wire into power drill....spin until supertight. Take snips, and cut off 75% of the pigtail, and fold over the rest. Those mofos ain't goin no place. This technique is used on turbo manifolds to keep the nuts from backing off, and it's very effective. If you can get stainless steel wire, it will keep things nice and corrosion free.

0.041" Stainless Steel Lock Wire, 1 Lb. Coil

1lb of wire is enough to secure every control arm on this website.
Awesome tip - thanks!
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Old 10-01-2014, 05:43 PM   #16
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Did folks tighten these on the vehicle? I'm curious what is the best method for torquing these on? I have a vice and a 15" crescent wrench and a cheater bar.

Was thinking of putting the arch of the bar itself in the vice and then tightening the jam nut but don't want to mess up the finish of the bar itself with the vice.

How/where did you tighten it?
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Old 10-01-2014, 06:59 PM   #17
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I kinda did what tg2684 did. Install and measure out the arms then drop one end at a time to crank on. That lets the vehicle hold the opposite end still and keeps the arm in the right position. I go one step further and bold a vise to the garage floor to hold the working joint from turning...then reinstall and go to the next one.

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