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My daughters brake pedal has plenty of travel in it, i have adjusted the rear brakes, checked the pads, they are ok, the servo is working ok, must be the master cylinder??? is this a common fault on these cars or could it be something else? thankyou.
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Emm brakes on the Ka are usually good are the wheel cylinders leaking? have you pulled back the seals?
You may have flipped the seals in the master did you push back the piston & pump pedal or push the brake pedal with the drums off?
To see if there is any leaks past the master undo the 2x nuts holding to servo and gently pull away see if any brake fluid is present?
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We had this problem back in August as it failed its MOT on "Insufficiant Reserve movement in brake pedal"
Manual adjustment is a common requirement on a KA however Master Cylinder failure isnt.
1. When you say you have adjusted the rear brakes did this involve manually tweeking the ratchet so that the drum was a snug fit over the shoes? Did you remove the lip from the inside of the drum?
2. Have you bled the front and rear brakes? To do this you would have but a 8mm tube onto the bleed nipples and released the bleed screw while someone pressed the pedal.
3. Is the brake fluid topped up to the required level?
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