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Old 04-18-2018, 10:54 PM   #1
Noah96
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Join Date: Aug 2016
Location: Danville Wv
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Brake Problems

Hey all have a question about my brakes. Have a 1969 C2500 with brake booster equipment. When I try using the brakes the pedal goes down to the wall. The brake cylinder doesn't leak fluid and stays full. Bled brakes didn't get any air when bleeding. May have messed up when I bled the only thing I can think of since I have no fluid lose. Any ideas.
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Old 04-19-2018, 05:40 AM   #2
panhead59
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Re: Brake Problems

sounds like a bad master cylinder. It doesn't have to leak to be bad.
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Old 04-19-2018, 09:37 AM   #3
applebmw
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Re: Brake Problems

Quote:
Originally Posted by Noah96 View Post
Hey all have a question about my brakes. Have a 1969 C2500 with brake booster equipment. When I try using the brakes the pedal goes down to the wall. The brake cylinder doesn't leak fluid and stays full. Bled brakes didn't get any air when bleeding. May have messed up when I bled the only thing I can think of since I have no fluid lose. Any ideas.
Your plunger in mast cylinder needs rebuilt, used to be able buy a kit. I have a good power brake master cylinder, from 70 c-10 I will let you have for $25, plus shipping... I replaced with chrome.
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Old 04-19-2018, 02:51 PM   #4
hayhauler71
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Re: Brake Problems

Take the brake lines off the master and get some brass plugs to block the ports. Pump the brake and if the pedal fades the master is bad.
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Old 04-19-2018, 06:57 PM   #5
Steeveedee
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Re: Brake Problems

Your master cylinder is bypassing. If it is old, just replace it, so that you don't have to deal with a pitted bore.
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