Fig.2-5 Parking brake device Fig.2-6 Clearance self-adjuster
▲Motion of clearance self-adjuster
When the brake pedal is pressed in reverse travel, the brake shoes are expanded, as
a result, the primary and secondary shoes come into contact with the brake drum and
rotate together. This brings that the brake pull rod turns right round point A, then point B is
lifted. On the other hand, as the brake is released, the lever turns left actuated by the
spring, point B descends. The descending distance of point B becomes further with
enlarging of clearance between friction pieces and brake drum. This cause adjusts lever
get long and clearance decrease. See Fig.2-6, Fig2-7.
Range of adjustable clearance:
Fig2-7 Clearance self-adjuster
To Next Page
Loading...
