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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

Leaky rear brakes

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Old May 23, 2021 | 08:04 PM
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Brkdncr's Avatar
Brkdncr
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Leaky rear brakes

1969 f250 2wd, Dana 60 rear axle.

A few years back, right before i put the truck into storage, i had a shop replace the rear brakes and cylinders since they were leaking. Now that it’s out of hibernation i noticed that its leaking again.

I went to check it out and it seemed the lines weren’t tight at the cylinders. I tightened them up and tried to bleed them but was pulling air the entire time. I also noticed that the bleed screws are 10mm metric and not SAE.

I’ve looked at the brake lines a lot and didn’t see any other leaks.

Any guesses or experience with this?
 
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Old May 23, 2021 | 10:06 PM
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This my or my not be related. If you store a vehicle in a shop where electric motors are used. The arching of these motors create ozone which is the enemy of rubber and accelerates deterioration. Have you pulled the drums and checked for leakage of the slave cylinder. Todays rubber does not seem to hold up as well as that of yesteryear.
 
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Old May 24, 2021 | 07:47 AM
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So you are sure it is brake fluid? It could also be gear lube from the hub seals.

Rubbers are better than they have ever been but with the low demand for reproduction parts we get a lot of low quality parts. I wish I knew what brand rebuilt parts are of quality.

My experience has been sitting around is harder on vehicles than driving them.



 
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