The rear disc brake piston needs to turn as it is retracted / compressed into the caliper.
Go to the parts store and tell them you need the brake cylinder retraction tool. Cost about 10 bucks and works for a variety of cars/vans.
It is a square with a couple of different teeth on each face, to align with the notches in the face of the brake piston.
Should work with a 3/8 drive ratchet. Clockwise facing the cylinder to retract. Have fun!
go to budget brakes
ya gotta get tool from autozone
Yes
did you replace the master cylinder if so it has to be bleed frist
The Mercury Mountaineer has hydraulic brakes, not air brakes.
The easiest way I have found to do this is to use a "C" clamp on the brake cylinder and slowly squeeze it to retract the piston to the retracted position.
A 1991 mercury topaz has drum brakes on the rear wheels.
A wheel cylinder describes "Drum Brakes" - Drum brakes have one cylinder with two diametrically opposed pistons.
The ECU for the ABS brakes is attached to the Master cylinder for the brakes.
Conventional drum brakes.
The brakes on the Villager are as straight forward as the brakes on a 1965 Mercury. Only normal brake tools are required.
The ECU for the ABS brakes is attached to the Master cylinder for the brakes.
If your brakes feel spongy, fill the master cylinder with brake fluid (make sure it is the same as in the master cylinder -do not mix dot 3 with dot 4 fluid) then try bleeding the line. If the brakes do not come back in firm, it may be time to repair or replace the caliper. Another common problem is the brakes lock up. What is happening is the piston does not retract and stays in the "applied" position. This puts a constant pressure on the rotor.
probably have a bad master cylinder.