Steering Gear Arm Ball Tolerance

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Model T Ford Forum: Forum 2017: Steering Gear Arm Ball Tolerance
Top of pagePrevious messageNext messageBottom of page Link to this message  By Daniel Snell on Sunday, June 11, 2017 - 12:41 pm:

Using a micrometer the steering arm ball is 0.03 of an inch out of round. What is the number that would be considered excessive?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Steve Jelf, Parkerfield KS on Sunday, June 11, 2017 - 01:07 pm:

I don't know how much is too much, but it doesn't matter if you have these: https://www.modeltford.com/item/2728APCO.aspx.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Daniel Snell on Sunday, June 11, 2017 - 08:12 pm:

10-4 Steve, but I am interested in knowing about the use of the arm without the accessory. Thanks for the suggestion though.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Roger Karlsson, southern Sweden on Monday, June 12, 2017 - 03:59 am:

I would find a better pitman arm if using it without the Apco accessory. The usual fix to tighten up a worn connection is to shim with a cupped copper (pre 1982) penny, but when the ball is 0.03" out of round there's a risk the penny will move around as you're steering - and in one position it'll still be sloppy, so it's replace or Apco for me.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Tim Wrenn-Monroeville OH on Monday, June 12, 2017 - 07:38 am:

I'm with Roger. Get a new one. They're not that expensive and safety first. You'll be surprised at the difference in your steering wheel play.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Steve Jelf, Parkerfield KS on Monday, June 12, 2017 - 07:57 am:

A new arm costs only $5 more than the APCO accessory.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Roger Karlsson, southern Sweden on Monday, June 12, 2017 - 08:33 am:

And even cheaper at swap meets :-)


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jerry VanOoteghem - SE Michigan on Monday, June 12, 2017 - 10:41 am:

Daniel,

If you adjust the cap for minimal clearance for the big dimension of the ball, then you'll have .030 clearance when the small dimension is in play. That's usually when you're going straight ahead. That's way too much. Get a new one, or a really good used one.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Larry Smith, Lomita, California on Monday, June 12, 2017 - 11:04 am:

It's easier to get a good fit on a worn pitman arm if you have the drag link disconnected from the tie rod. I file the cap, and also the drag link until I get a good fit. When I do, I pack the joint with old style fiberous wheel bearing grease, and tighten everything up. Like above, if your pitman arm is worn too much, then look for another. I was able to find one that was only out of round .001.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Daniel Snell on Thursday, June 15, 2017 - 02:08 pm:

Thanks to all, I will try Larry suggestion first then default to the replace suggestion.


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