Just changed the rear disks and calipers on my 78 rangie.
Went for a drive and it feels like there an on/off switch on the brakes. If I touch the pedal the brakes lock on. They don't stay locked but it's like the pedal is being sucked from under my foot.
Not a nice feeling.
Changed the master cylinder and still the same problem.
Anyone had this before, maybe my servo has just gone or something? Micheal