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10-30-2014, 07:00 PM | #1 |
Senior Member
Join Date: Jun 2014
Location: Canton, CT
Posts: 206
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1938 one ton manual "power brake assist"
I have a '38 one ton with manual brakes that I am restoring to stock. As I am putting the brakes back together I find that I need information on the vacuum assist mechanism that Ford built into this truck's manual brake system. I have a Type Q Bragg-Kliesrath actuating valve which is in-line between the brake pedal and the brake cross shaft, but it appears that I am missing anything else that would make this system work. I don't know if there was a regulator or a check valve, but I do know that the booster tank is missing. I have not yet found any diagrams or descriptions of the system or parts. I have not yet located the parts in the Green Bible. Any information on this early "power assist" system would be appreciated. I would like to reassemble it in working order.
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10-30-2014, 08:33 PM | #2 |
Senior Member
Join Date: Jul 2014
Location: Iowa
Posts: 1,634
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Re: 1938 one ton manual "power brake assist"
The first time I saw a "manual" (mechanical) brake booster was on a '37 Ford fire truck. It was a frantic call from firemen who were fighting a brush fire. The brakes were locked, and the fire was coming their way. The actuator valve was stuck, and opening the vacuum line and a good whack on the valve let it loose. I think they never trusted it again!
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10-31-2014, 01:28 PM | #3 |
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Join Date: May 2010
Posts: 2,480
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Re: 1938 one ton manual "power brake assist"
Hi all; I parted out a '34 with a vaccum assist that was operated by a manual valve on the steering column. A valve like a trailer valve for air brakes. Only one I've seen. Newc
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10-31-2014, 02:42 PM | #4 |
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Join Date: May 2010
Location: Mt. Holly,NJ
Posts: 1,822
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Re: 1938 one ton manual "power brake assist"
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