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Old 08-14-2017, 11:14 AM   #1
Ball and Chain
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Default How tight should the pitman arm nut be? Is there a torque spec?
Wondering if there is a torque spec for a 39 ford pitman arm nut?

Thanks!
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Old 08-14-2017, 12:33 PM   #2
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Default Re: How tight should the pitman arm nut be? Is there a torque spec?
Quote:
Originally Posted by Ball and Chain View Post
Wondering if there is a torque spec for a 39 ford pitman arm nut?

Thanks!
I tried to get an answer to the very same question; I don't think there's a specific torque setting.
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Old 08-14-2017, 12:41 PM   #3
J Franklin
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Default Re: How tight should the pitman arm nut be? Is there a torque spec?
Just make it tight, and recheck after a few turns out on the road.
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Old 08-14-2017, 12:44 PM   #4
19Fordy
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Default Re: How tight should the pitman arm nut be? Is there a torque spec?
Good and tight with an impact wrench
or good and tight with a breaker bar.
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Old 08-14-2017, 05:44 PM   #5
1948F-1Pickup
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Default Re: How tight should the pitman arm nut be? Is there a torque spec?
What's the thread diameter? A sector that
uses a 1" nut on a Mustang takes 85-110#
torque.....
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Old 08-14-2017, 11:31 PM   #6
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Default Re: How tight should the pitman arm nut be? Is there a torque spec?
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GM says to tighten and "stake" the threads with a prick punch
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Old 08-15-2017, 12:41 AM   #7
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Default Re: How tight should the pitman arm nut be? Is there a torque spec?
I make them good and tight with a standard socket wrench.
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Old 08-15-2017, 01:52 AM   #8
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Default Re: How tight should the pitman arm nut be? Is there a torque spec?
Quote:
Originally Posted by Ball and Chain View Post
Wondering if there is a torque spec for a 39 ford pitman arm nut?

Thanks!
Damn tight, like 100ft lbs, at least.
Then recheck and re tighten if indicated.
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Old 08-15-2017, 05:01 AM   #9
51 MERC-CT
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Default Re: How tight should the pitman arm nut be? Is there a torque spec?
These are the torque values as set forth for '49-'51 Linc/Merc.
(120-130 ft.-lb.)
Attached Images
File Type: jpg sboxtorque.jpg (81.2 KB, 81 views)
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Old 08-15-2017, 04:40 PM   #10
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Default Re: How tight should the pitman arm nut be? Is there a torque spec?
Do these not usually use a lock washer, cotter pin or both?
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Old 08-15-2017, 05:03 PM   #11
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Default Re: How tight should the pitman arm nut be? Is there a torque spec?
ive got a lock washer on mine.
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Old 08-15-2017, 05:34 PM   #12
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Default Re: How tight should the pitman arm nut be? Is there a torque spec?
Quote:
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Do these not usually use a lock washer, cotter pin or both?
They usually use a lock washer and a cotter pin. - at least on a 1940.
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Old 08-15-2017, 06:23 PM   #13
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Default Re: How tight should the pitman arm nut be? Is there a torque spec?
Lock washer and or cotter pin, just tighten it up and forget it.
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Old 08-16-2017, 12:06 PM   #14
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Default Re: How tight should the pitman arm nut be? Is there a torque spec?
Quote:
Originally Posted by Randy in ca View Post
Do these not usually use a lock washer, cotter pin or both?
Quote:
Originally Posted by weemark View Post
ive got a lock washer on mine.
Quote:
Originally Posted by 19Fordy View Post
They usually use a lock washer and a cotter pin. - at least on a 1940.
Quote:
Originally Posted by russcc View Post
Lock washer and or cotter pin, just tighten it up and forget it.
They do use a cotter pin and washer, thats kinda why im asking. Its very shallow maybe only into the second thread.
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Old 08-16-2017, 12:41 PM   #15
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Default Re: How tight should the pitman arm nut be? Is there a torque spec?
Quote:
Originally Posted by 51 MERC-CT View Post
These are the torque values as set forth for '49-'51 Linc/Merc.
(120-130 ft.-lb.)
Nice chart, thanks for sharing
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Old 08-16-2017, 03:18 PM   #16
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Default Re: How tight should the pitman arm nut be? Is there a torque spec?
When tightening make sure your wheels are on the ground and the drop arm is roughly in the centre, The stress is transferred to the control arm and wheels ,Ted
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