10-16-2012, 04:33 PM | #1 |
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Join Date: Nov 2010
Location: Ontario
Posts: 134
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Brake booster
i have a brake fluid leak coming from where the master cylinder meets the booster. is there a seal there? do i need a new booster or is it an issue with the master cylinder. the leak has destroyed the paint on my inner fenders.
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85 swb c10 6/6 drop 83 c10 bagged and sfbd project |
10-16-2012, 04:50 PM | #2 |
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Location: Goliad, TX
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Re: Brake booster
The problem is with the master cylinder but the leaking brake fluid may have also ruined the brake booster.
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10-16-2012, 05:10 PM | #3 |
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Location: Ontario
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Re: Brake booster
Brakes seem to work fine, its not a daily driver it hasnt had many mile on it since it has started leaking. how do i check the booster?
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85 swb c10 6/6 drop 83 c10 bagged and sfbd project |
10-16-2012, 05:50 PM | #4 |
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Location: Tahlequah, OK
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Re: Brake booster
Your booster will be fine. Slap a new master on there and forget about it.
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2016 GMC Sierra Double Cab 1986 GMC Sierra Classic SWB 1972 Chevy Cheyenne C20 4x4 Camper Special |
10-16-2012, 11:47 PM | #5 | |
78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
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Re: Brake booster
Quote:
go out in the morn cold pull the vac plug to the carb on it,how much suction was there do this when it's off 2-3 times after driving and compare to sitting all night
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
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10-17-2012, 03:55 AM | #6 |
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Re: Brake booster
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10-17-2012, 05:16 AM | #7 |
78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
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Re: Brake booster
If your booster is leaking
It prob wont have much vac in the morn Pull the valve(10:00 o'clock on the booster face) out of the booster , should have suction After driving see if more or less vac, or the same Posted via Mobile Device
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
10-17-2012, 05:53 PM | #8 |
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Location: Weare,NH
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Re: Brake booster
If you're not driving it much you may not have noticed that the brake pedal loses pressure when you're holding it steady. I have replaced many MC's on Hondas because the MC leaks. Never had to replace a booster.
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11-09-2012, 06:24 AM | #9 |
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Join Date: Feb 2012
Location: Wisconsin
Posts: 144
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Re: Brake booster
Mine just started leaking. Is there a seal between the mc and booster?
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11-09-2012, 08:41 AM | #10 |
Robert Olson Transport
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,310
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Re: Brake booster
the seal between the master and the booster is a foam rubber kind of thing that seals in the vacuum on the booster the seals for the fluid are all on the master the advice you got was spot on your master is leaking from the seal up by the rear of it. change your master and you should be ok... while youre at it clean and paint your inner fender and the truck is good as new
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