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01-16-2010, 04:24 PM
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#1 |
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Cultural Infidel
 
Join Date: Jan 2007
Location: Clearwater, FL
Posts: 668
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Power drum brake help needed
When first started, I have good pedal and good braking. Drive it half a block and the pedal goes to floor with hardly any braking. They stay this way until the truck is turned off. When you switch off the engine, the pedal comes back up. It sounds as if there is a vacuum leak coming from the power booster. There is good vacuum at the hose, and when plugged, the RPM drop. When plugged in to the power booster, the RPM stay up. Is the booster shot? Is it a simple unbolt and replace? How do I identify the booster that is on the truck? Will any new booster work?
Thanks, -Mark
__________________
posted via La-Z-Boy -Mark 1972 C-10 Fleetside 350/TH350 PS PB A/C Cab Sadly....Sold  1968 Short Fleet 350/TH400 PS PB Delivered by Fine69  Also sadly Sold!It may be that your whole purpose in life is simply to serve as a warning to others. A man is not complete until he is married -- then he is finished. |
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01-16-2010, 06:43 PM
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#2 | |
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Registered User
Join Date: Aug 2005
Location: Pasadena,Tx /Pto Pta DR
Posts: 5,415
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Re: Power drum brake help needed
Quote:
Hook up a vacuum pump and see if it pulls a vaccum. if not it leaks booster will work from just about anything if the will bolt up to your truck and current fittings. You can put too large of a booster(people think they will stop better) on as well as too small of one. |
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01-16-2010, 08:55 PM
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#3 |
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Cultural Infidel
Join Date: Jan 2007
Location: Clearwater, FL
Posts: 668
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Re: Power drum brake help needed
Thank you. That should make it easy.
__________________
posted via La-Z-Boy -Mark 1972 C-10 Fleetside 350/TH350 PS PB A/C Cab Sadly....Sold 1968 Short Fleet 350/TH400 PS PB Delivered by Fine69 Also sadly Sold!It may be that your whole purpose in life is simply to serve as a warning to others. A man is not complete until he is married -- then he is finished. |
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01-23-2010, 01:20 PM
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#4 |
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Cultural Infidel
Join Date: Jan 2007
Location: Clearwater, FL
Posts: 668
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Re: Power drum brake help needed
Follow up. Replaced the power booster and brakes work great!
__________________
posted via La-Z-Boy -Mark 1972 C-10 Fleetside 350/TH350 PS PB A/C Cab Sadly....Sold 1968 Short Fleet 350/TH400 PS PB Delivered by Fine69 Also sadly Sold!It may be that your whole purpose in life is simply to serve as a warning to others. A man is not complete until he is married -- then he is finished. |
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01-23-2010, 01:44 PM
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#5 | |
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Registered User
Join Date: Aug 2005
Location: Pasadena,Tx /Pto Pta DR
Posts: 5,415
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Re: Power drum brake help needed
Quote:
Mike |
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