master cylinder bench bleeding
Thread Starter
Melting Slicks
Joined: Jan 2000
Posts: 3,321
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From: home
master cylinder bench bleeding
After 50+ years on the car, the master cylinder started leaking. I bought one of the GM restoration master cylinders and now it is time to bench bleed. At what point during the bench bleed do I bleed through the bleeder fittings? Before or after bleeding through the brake line fittings? Caveat: some threads I read said that the bleeders do not need to be bled since they were used to bleed the system when the car was built.
Le Mans Master
Joined: Aug 2017
Posts: 8,336
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From: Cool Northern Michigan
That's the story I have heard also. Production-Line Bleeders.
However, one would think that if you do not open it just a pinch & bleed, there has to be a bubble there at the port.
I have never owned a MC w/bleeders. But in a logical sense, I would at least shoot some juice through both bleeders once.
However, one would think that if you do not open it just a pinch & bleed, there has to be a bubble there at the port.
I have never owned a MC w/bleeders. But in a logical sense, I would at least shoot some juice through both bleeders once.
Last edited by HeadsU.P.; Jun 8, 2020 at 08:20 PM.
Team Owner
Joined: Jan 2006
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From: Crossville TN
Couldn't hurt to finish the M/C bench bleeding by cracking each bleeder and then closing it during a single cycling of the M/C. That way there is no chance of 'sucking' in any air via that bleeder.
Thread Starter
Melting Slicks
Joined: Jan 2000
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From: home
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