Brakes
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Senior User
Joined: Jul 2011
Posts: 270
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From: North West
Brakes
I rarely drive my truck. Today I got in and went to take off and it felt like the E brake was on it was my brake pedal in the pressed down position. I pulled it up with my foot and it released the brakes. It continued to stick down after every use. Any ideas guys?
The truck '78 F250 4x4 camper special 400 A/T
The truck '78 F250 4x4 camper special 400 A/T
Thread Starter
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Senior User
Joined: Jul 2011
Posts: 270
Likes: 0
From: North West
Thank you for your answer and I probably should lube the cables.
Senior User
Joined: Apr 2004
Posts: 235
Likes: 1
From: Fayetteville, NC
Try lubing the pedal linkage behind the brake booster. There's some linkage back there that is bad about rusting from rain dripping down the firewall on these old trucks. If that doesn't fix it id start checking the master cylinder out.
Cargo Master
Joined: May 2011
Posts: 2,388
Likes: 138
From: Northern California
My guess is the issue is either the brake pedal linkage binding or the brake booster. The master cylinder engages with the pushing action from the plunger that goes between it and the booster... If the MC had an issue, pulling the brake pedal would not likely resolve it as the plunger cant transfer that pull since its not connected; its merely positioned up against the MC. The MC, being spring loaded, returns on its own pushing the pedal back (and everything inbetween) to the unpressed position.
If some spray lube doesnt help, look into a new booster; they go out after a few decades of use.
If some spray lube doesnt help, look into a new booster; they go out after a few decades of use.
Fleet Owner
Joined: Dec 2009
Posts: 20,678
Likes: 83
From: NorCal
FYI.... the booster linkage/bracket actually has a zerk (grease) fitting on its underside. It's not readily visible as-installed but it is there.
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Senior User
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From: North West
Cool to know I will look for it. Thank you
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