Can anyone help.
My 1977 FJ40 has factory fitted front disc brakes & rear drum brakes. I have renewed the braking system through including hard & soft brake lines. I fitted a new OEM master cylinder and brake booster, which I bought from City Racer. They said the booster was for drum brakes all round, but it was identical in every way to the the one fitted originally to the vehicle, so I bought it
Unfortunately, the front brakes drag.
I have tried adjusting the brake pedal and the plunger in the brake booster. I put the original booster and master cylinder back on the car, but the problem persists. I have bleed the whole system and purged any air.
What's happening is the brake pedal remains soft and requires pumping to work. However once the brakes are released the wheel stays locked. Slowly the pressure dissipates and the wheel runs free again until you apply the brake and the whole cycle starts again.
I have cracked the brake pipes at every junction and the wheels run freely, right up to the booster. If I loosen the master cylinder from the brake booster the wheels run freely. The problem seems to be with the brake booster. As I said, I have tried the old master cylinder & booster, but the problem doesn't go away.
Please can anyone help? Did I buy the wrong booster? Can it really make such a difference?
My 1977 FJ40 has factory fitted front disc brakes & rear drum brakes. I have renewed the braking system through including hard & soft brake lines. I fitted a new OEM master cylinder and brake booster, which I bought from City Racer. They said the booster was for drum brakes all round, but it was identical in every way to the the one fitted originally to the vehicle, so I bought it
Unfortunately, the front brakes drag.
I have tried adjusting the brake pedal and the plunger in the brake booster. I put the original booster and master cylinder back on the car, but the problem persists. I have bleed the whole system and purged any air.
What's happening is the brake pedal remains soft and requires pumping to work. However once the brakes are released the wheel stays locked. Slowly the pressure dissipates and the wheel runs free again until you apply the brake and the whole cycle starts again.
I have cracked the brake pipes at every junction and the wheels run freely, right up to the booster. If I loosen the master cylinder from the brake booster the wheels run freely. The problem seems to be with the brake booster. As I said, I have tried the old master cylinder & booster, but the problem doesn't go away.
Please can anyone help? Did I buy the wrong booster? Can it really make such a difference?