The emergency brake pedal goes to the floor and only just holds the vehicle on the flat. The adjustment on the cable located on the drivers side rear is maxed and it appears the lever on the passanger rear wheel is travelling its full length without activating the brake. I'm sure this is easy but can anyone help?
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Re: emergency brake going to the floor
you purchase new tires lately? Perhaps they didn't align them or your
wheel bearings are bad causing vibration in disc rotor moving caliper
piston furthur from pads increasing the brake pedal distance..
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Not sure what model vehicle you have. Look at the emergency brake pedal, and see if it is supposed to hit a switch when the pedal is released - it may be the switch it out of adjustment and needs adjusted.
Have someone watch the light while you run your finger along the entire length of the pedal to see if the light goes out when you hit the switch. This assumes the issue is mechanical.
I had the same thing. just remove the cover from under the steering wheel and you can see the ratchet release lever. You can also remove the metal cover that is under the plastic cover for more visibility. now just reach in with a bit of stiff wire with a hook on the end and pull the lever back to you. that is all the cable does, and voila, the brake is released. now you just have to remember not to push it down again (I did!)
It's very possible to be the master cylinder, the o-rings on the piston could be worn, letting the fluid seep back through instead of getting full pressure through the lines. Could also be the brake booster.
Try changing the master cylinder first, which is cheaper and easier, and see if there is a difference, you'll need to bleed the brakes again.
To check the booster,
With the engine off, pump the brakes until the pedal is hard, then hold pressure on the brake pedal and listen for air escaping, or the pedal goes slowly to the floor, Do that after the master cylinder has been changed, at least that will be eliminated.
sounds like you have a worn set of park break shoes. they are located inside /behind the read rotors. if you remove the rotor and the shoes look fine then you can adjust them with the little star gear located on the bottom of the brake shoes.
The parking brake cables may be stretched and in need of adjustment. Follow the cables along to a nut. Then you can tighten the adjusters up on both sides until you have the proper tension. Also make certain none of the brackets are bent or broken that the cables ride through.
there is an adjustment under the van near the frame driver side near the gas filler tube.. use a wrench to tighten the cables...also check and see if your shoes are worn out. the farther they wear, the less your emergency brake will hold. Finally if none of this works, you may have stretched cables and have to replace them....