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  #1  
Old 04-30-2012, 09:41 AM
philgarvey philgarvey is offline
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Default new brakes

Hello squarebirds,
I put a new brake system in my 59. Almost everything is new but the brakes are grabby. Is this just old technology or do you think I need to tweek something. I had my car on a lift and adjusted the brake shoes so that there is just a slight drag on the wheel as I turned it....did I miss something?
phil garvey
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Old 04-30-2012, 11:33 AM
cubbear cubbear is offline
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did you put on new drums or have yours turned? should not be grabby
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Old 04-30-2012, 12:24 PM
philgarvey philgarvey is offline
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I put the old drums back in. They looked OK, not grooved or anything.
phil
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Old 04-30-2012, 01:42 PM
cubbear cubbear is offline
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drums out of round or grease or something on drum dreive car and ride brake lightly see if it clears up
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Old 04-30-2012, 02:56 PM
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Are the Primary and Secondary linings on correctly?
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Old 04-30-2012, 03:34 PM
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jopizz jopizz is offline
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I suggest having the drums turned. Regardless of how they look they're probably warped some after all these years. Can you pinpoint the grabbing to one or two wheels. If everything else is new and adjusted correctly I would start with the drums.

John
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Old 04-30-2012, 09:19 PM
Astrowing Astrowing is offline
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And check the diameter of the drums. They are only to be turned to a max of 30 thousands over. If they are over, you won't have acceptable braking performance and they will probably be different side-to-side because of arc differences between the linings and the drums. Mine were over especially on the fronts, and the performance with new drums is much, much better.
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Last edited by Astrowing : 04-30-2012 at 10:10 PM.
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Old 05-01-2012, 12:17 AM
Jimz Bird Jimz Bird is offline
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Another thing you could check after you see that you have the primary and secondary shoes are in the right spot would be to pull off the shoe and see if it has the same "arch" as the drum.

I have heard some shoes have to be re-arched to fit the drum.

I don't know if you can do it but a brake shop or truck stop should be able to.

Here is an interesting story from the Studebaker guys.
http://forum.studebakerdriversclub.c...NG-BRAKE-SHOES
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Old 05-01-2012, 03:00 AM
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Oh please, for GOD'S sake, do not pound on brake shoes. They are welded pieces of sheet metal, and reused many times.

Linings are brittle and pieces can chip or break off. There are two acceptable methods of arcing your shoes:
1. Go easy and let them wear themselves 'in'. It doesn't take long and you may need to adjust them frequently at first.

2. Use a machine to arc your linings by grinding them. It's a simple adjustable lever, 5.5" long, that your shoe attaches to. If your drums are larger than 11" diameter, they simply extend the lever to match, and pass the shoe across the grinding wheel. No pounding is necessary and the shoe will not distort.

As one post in Jim's article said, "You still see old arcing grinders in the corners of some old shops."
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Old 05-01-2012, 11:04 AM
philgarvey philgarvey is offline
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thank you all for your input. The internal parts are put in correctly....I remember the brake poem...fat in the back, junk in the trunk...silly but I had to recite it to myself before assembling the shoes and hardware. Anyway I think I will check into arcing the linings as suggested.
phil
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