Maverick and Comet Repair
BRAKES - DRUM BRAKES
BRAKE SYSTEM
Self-adjusting, internal expanding duo-servo drum brakes are
standard equipment on all 1970-75 Maverick and Comets. Sliding
caliper front disc brakes are available as optional equipment on
1974-75 models and standard on 1976-77 models. Power assist is used
on disc brake models.
DRUM BRAKES
Drum brakes on all Mavericks and Comets employ single-anchor,
internal-expanding, and self-adjusting brake assemblies. The
automatic adjuster continuously maintains correct operating
clearance between the linings and the drums by adjusting the brake
in small increments in direct proportion to lining wear. When
applying the brakes while backing up, the linings tend to follow the
rotating drum counterclockwise, thus forcing the upper end of the
primary shoe against the anchor pin. Simultaneously, the wheel
cylinder pushes the upper end of the secondary shoe and cable guide
outward, away from the anchor pin. This movement of the secondary
shoe causes the cable to pull the adjusting lever upward and against
the end of the tooth on the adjusting screw starwheel. As lining
wear increases, the upward travel of the adjusting lever also
increases. When the linings have worn sufficiently to allow the
lever to move upward far enough, it passes over the end of the tooth
and engages it. Upon release of the brakes, the adjusting spring
pulls the adjuster lever downward, turning the star-wheel and
expanding the brakes.
