brake light
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Joined: Dec 2006
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From: In a hole
brake light
does the brake light in the dash mean the there is a problam with the brakes
or that the park brake is set?
this may be a dumd question but mine is on all the time, i thoight it ment
the park brake was set, but after thinking about it i am not sure.
or that the park brake is set?
this may be a dumd question but mine is on all the time, i thoight it ment
the park brake was set, but after thinking about it i am not sure.
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Joined: Mar 2006
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Okay, I gotta jump in. I'm in the latter stages of a very slow cab swap. I had to swap the brake booster (and master cylinder ?) as well because of the engine. As a result, I lost some brake fluid which I replaced before I had to move the truck. Anyway, my brake light is constantly on and I'm not really having any brake problems that I'm aware of (didn't swap anything brake-related except e-brake and electrical). I figured maybe the light was sensitive and I have a little air in the brakes, crossed a wire to cause the light to come on (or probably a dozen other things that I could have done).
I'm a rookie at this and don't know what the "PPV actuated switch" is.
Do you think I need to do more investigative brake work? I am not driving the truck a lot right now while I'm still finishing up the swap.
BTW, I have a 1973 F250 4X4 (highboy), 360, auto with a nicer F250 2WD cab and front clip.
I'm a rookie at this and don't know what the "PPV actuated switch" is.
Do you think I need to do more investigative brake work? I am not driving the truck a lot right now while I'm still finishing up the swap.
BTW, I have a 1973 F250 4X4 (highboy), 360, auto with a nicer F250 2WD cab and front clip.
New User
Joined: Jan 2008
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The (PPV) proportioning valve or (BPPV) Brake Proportioning Valve shown below has a piston that slides forward or rearward pushing the plunger pin upward ..... if there is a fluid/pressure leakage in either the front or rear brake circuits ...this piston plunger switch actuates the warning lamp to let the driver know the brakes are leaking.
To reset it, the brake leak has to be fixed and the actuated piston/switch in the PPV has to be re-centered..as shown in the picture above.
This is accomplished by either:
pressing really hard on the pedal to HOPEFULLY get it back in the center position
or the correct way
by relieving the pressure on the opposite circuit of the leak (when the pedal is being applied) ..until the light goes off, then tightening the bleeder back up.
To reset it, the brake leak has to be fixed and the actuated piston/switch in the PPV has to be re-centered..as shown in the picture above.
This is accomplished by either:
pressing really hard on the pedal to HOPEFULLY get it back in the center position
or the correct way
by relieving the pressure on the opposite circuit of the leak (when the pedal is being applied) ..until the light goes off, then tightening the bleeder back up.
Last edited by Mil1ion; Dec 29, 2006 at 06:18 PM.
