Pitman arm question - Vintage Mustang Forums

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post #1 of 20 (permalink) Old 02-24-2013, 07:05 PM Thread Starter
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Pitman arm question

So I'm trying to figure out if I got sent the wrong pitman arm. I've got a flaming river box with the 1-1/8" sector - so I ordered a 1-1/8" pitman arm. When I went to fit it this weekend I rotated it until it slipped on a little then tried to get the lock washer and nut on and there isn't enough thread to get the washer on - with just the nut it seems to get tight very quickly - I didn't force it to the 155ft.lb though
So what I want to know is how much should it slide on? I'm thinking they sent me a 1" pitman arm by mistake
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post #2 of 20 (permalink) Old 02-24-2013, 09:17 PM
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post #3 of 20 (permalink) Old 02-24-2013, 09:20 PM Thread Starter
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Car is now 150 miles away until next weekend
It's nowhere near this far on:
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post #4 of 20 (permalink) Old 02-24-2013, 09:30 PM
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If it is 1/8" too small, it will not engage the splines of the sector shaft at all. Is it aligned correctly? There are four wide splines on both the shaft and the pitman arm, so that it will only go on one of four ways. (Three of which will be obviously wrong!)

'65 Coupe, 302, Autolite 4100, C4, 3.00
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post #5 of 20 (permalink) Old 02-24-2013, 09:35 PM Thread Starter
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Well I felt it locate and drop on about 1/16" when I rotated it - would it do that on one of the 3 wrong ways? I always thought the FR sectors only had one way you could put it on?

I had no way of rotating the steering as I'm waiting for my woodward steering column. I only found out right before I left that I can grab the pitman arm and use that to rotate it. I just assumed it came at the correct position (midway between locks).
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post #6 of 20 (permalink) Old 02-24-2013, 10:01 PM
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It will go on wrong three of the four ways, but it would be obviously wrong, being 90 or 180 degrees off. You would not be able to connect it to the steering linkage.

'65 Coupe, 302, Autolite 4100, C4, 3.00
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post #7 of 20 (permalink) Old 02-24-2013, 10:05 PM Thread Starter
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How far does the sector shaft turn? I lined up the pitman arm with the linkage and it slotted on the sector shaft that 1/16"
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post #8 of 20 (permalink) Old 02-25-2013, 01:05 AM
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Run the steering wheel from one stop to the other counting the turns and divide in half, the turn back that amount and visually center the wheel (shouldn't be more than 1/4 turn off. Locate the Pitman arm so that it's in line with the car from front to back. That should be pretty darn close. If it goes on a bit but still stops it could be a burr on the splines of either the Pitman or the sector. I'm a bull, so I'd probably put the impact on the nut only to draw it up a bit, then pull the nut and add the washer.
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post #9 of 20 (permalink) Old 02-25-2013, 01:42 PM Thread Starter
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That wont work - the steering wheel is 15 miles away from the steering box lol and the steering column is in CA while the car is in NY lol
I'm going to have to grab the pitman arm and do it that way - The stop is in the box correct? I'm not going to run the block off the shaft if I do it this way?
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post #10 of 20 (permalink) Old 02-25-2013, 02:19 PM
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You don't need the steering wheel to center the box.
Just do what bartl said. In the "center" position, the
pitman is parallel to the frame. Any resistance you feel
sliding it in place would be improper splines, twisted
splines or burrs on the splines.

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post #11 of 20 (permalink) Old 02-25-2013, 02:23 PM Thread Starter
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Quote:
Originally Posted by GT289 View Post
You don't need the steering wheel to center the box.
Just do what bartl said. In the "center" position, the
pitman is parallel to the frame. Any resistance you feel
sliding it in place would be improper splines, twisted
splines or burrs on the splines.

ex-Global West GM
1991-1995
Not getting you - bartl said to run the steering wheel from stop to stop - how can I do that without a steering wheel?
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post #12 of 20 (permalink) Old 02-25-2013, 03:16 PM
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Clamp a vicegrips on the shaft (NOT the threaded part) and use it as your wheel.

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'66 GT
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post #13 of 20 (permalink) Old 02-25-2013, 04:33 PM
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Bartl and GJG30075 got this one solved.

Good job Guys.

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post #14 of 20 (permalink) Old 02-25-2013, 08:15 PM
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theres also a line on the end of the shaft at the steering wheel end and when its straight up the box is centered.

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post #15 of 20 (permalink) Old 02-25-2013, 09:10 PM Thread Starter
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The steering column is in California and the car is in New York - all that is on the car at the moment is the steering box, idler arm cross link and tie rod ends - they aren't fitted together yet as I need the pitman arm on to do that.
I can't turn a steering wheel, or the part the steering wheel goes to as there isn't anything there. The only thing I can do is grab the pitman arm and turn that - I don't want to put vice grips on the input shaft as I'll damage the splines.
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