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#1 |
Registered User
Join Date: Oct 2017
Location: China Maine
Posts: 5
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Reservoir beside brake booster
Good morning. I ordered my new brake booster and master cylinder for my 69 C20 dually and while waiting I decided to spray everything I need to remove so it will come apart easier. Can anyone tell me what the extra reservoir is to the right of my brake booster. Unable to find any pics of other trucks with that in it. Thanks
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1969 GMC C20 2001 Chevy Silverado 1500HD Crew Cab 2005 Chevy Silverado 3500 Crew Cab Duramax Last edited by 1jfhj2; 11-19-2017 at 09:49 AM. |
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#2 |
Senior Member
![]() Join Date: Jul 2015
Location: Fairfax, Missouri
Posts: 1,049
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Re: Reservoir beside brake booster
Hydraulic clutch?
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#3 |
Registered User
Join Date: Oct 2017
Location: China Maine
Posts: 5
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Re: Reservoir beside brake booster
It is a 4 speed but I didn't think they had hydraulic clutch that early.
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1969 GMC C20 2001 Chevy Silverado 1500HD Crew Cab 2005 Chevy Silverado 3500 Crew Cab Duramax |
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#4 |
Senior Member
![]() Join Date: Oct 2009
Location: Godley, TX
Posts: 17,995
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Re: Reservoir beside brake booster
It's likely a slave cylinder for the clutch - not a hydraulic release bearing like they have today. Look where your clutch actuating lever connects to the bell housing and see if you have a push cylinder rather than mech linkage. They had this setup as early as 1960, it used to be part of the main master cylinder. But, this setup looks like an old single pot brake mc (which would work for the clutch) from 63-66 trucks (and cars) - have not seen one on a 69.
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#5 |
Senior Member
![]() Join Date: Oct 2014
Location: New Palestine In
Posts: 932
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Re: Reservoir beside brake booster
Since there's no line coming out of the old single port MC the clutch linkage has probably been changed to mechanical?
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Phil "Money is only a tool to create and achieve what you want most in life" PayPal: rodnrudy@comcast.net |
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#6 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,777
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Re: Reservoir beside brake booster
It could be the master needed for a hydraulic trailer brake set up.
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#7 |
Registered User
Join Date: Jan 2001
Location: Orem, Utah
Posts: 8,021
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Re: Reservoir beside brake booster
Most likely answer. Look under the dash to see if there's a rod connecting this MC to the brake pedal.
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I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson |
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#8 |
Registered User
Join Date: Dec 2009
Location: bisbee, arizona
Posts: 1,530
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Re: Reservoir beside brake booster
might also be part of a big truck set up
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