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Old 09-21-2012, 06:14 PM   #1
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F-You Pitman Arm

Any ideas as to why my 185ft lb pitman arm nut would randomly come loose? I noticed it was loose, like hand tight, a year ago torqued an been fine ever since.

Was under my Jeep 2 weeks ago and noticed it was loose so I re-tightened it, was just laying under the Jeep today and look, sure enough its loose again.

Any suggestions?

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Old 09-21-2012, 06:42 PM   #2
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Someone trying to collect life insurance? Have you tried applying loctite and retorque.

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Old 09-21-2012, 06:49 PM   #3
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Originally Posted by gmabry75 View Post
Someone trying to collect life insurance? Have you tried applying loctite and retorque.
Ha they shouldnt collect yet, only been with the highway patrol for 8 months, life insurance isnt built up yet.

I just changed out the lock washer thats on there then added loctite. I'll drive around an check it again in a day or so
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Old 09-21-2012, 06:50 PM   #4
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Locktite.
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Old 09-21-2012, 07:20 PM   #5
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I am in the fastener industry. Please use Loctite as it has been proven that lock washers have no real benefit. There are a few types that work but they are not very common. I will try to find the study on this (it was done by NASA).
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Old 09-21-2012, 11:33 PM   #6
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I am in the fastener industry. Please use Loctite as it has been proven that lock washers have no real benefit. There are a few types that work but they are not very common. I will try to find the study on this (it was done by NASA).
You don't have to convince me. I don't design anything with lockwashers and I despise them with a passion. The only thing I've ever seen them do is tear up faying surfaces and get destroyed on removal.
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Old 09-22-2012, 12:00 AM   #7
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You'd have to contact them with the size nut you need, but try here:
Stage 8 Spindle Nut System Fasteners | Locking Fasteners
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Old 09-22-2012, 02:24 AM   #8
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There's a lock washer? Pretty sure there isn't one on mine. Its a flared shaft, so perhaps with the lockwasher it isn't snugging up properly.

Maybe I'm wrong and there is a lockwasher, but I'm pretty sure there isn't, and mine was hell to get off.
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Old 09-22-2012, 07:46 AM   #9
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Here is the article.

http://ntrs.nasa.gov/archive/nasa/ca...1990009424.pdf

The most functioning lock washer is the nord-lock but they are hard to find.
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Old 09-22-2012, 09:24 AM   #10
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Originally Posted by c_goodnow View Post
There's a lock washer? Pretty sure there isn't one on mine. Its a flared shaft, so perhaps with the lockwasher it isn't snugging up properly.

Maybe I'm wrong and there is a lockwasher, but I'm pretty sure there isn't, and mine was hell to get off.
I use the lock washer on pitman arms as a spacer to stop the possibility of the nut bottoming out on the shoulder at the base of the threads where the splines stop.

I would be just as comfortable with a machined spacer and loctite or an upset locknut.

I've not seen a stock pitman on a stock steering gear without a lockwasher done that way on purpose.

Do you have a drop pitman arm?

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