Hino 600, Руководство по ремонту, Страница: 442 / 451

PARKING BRAKE (BOSCH 12") BR07–14
ANCHOR SCREW, LEVER AND CAM REPLACEMENT
1. REMOVING COMPONENTS
NOTICE
The anchor screw, lever, and cam should all be replaced at the same
time. Do not replace just one or two of the three parts at any time.
Inspection of these parts is recommended at 250,000 miles or 5 years
for typical use, or more often under severe operating conditions.
(1) Block the front wheels to keep the vehicle from moving.
(2) With the engine off and battery disconnected, place the transmission
in gear and fully release the parking brake.
(3) If recommended in vehicle manufacturer's service manual, raise the
rear of the vehicle so the wheels clear the floor and install safety
stands to support.
(4) Remove the drum. See vehicle manufacturer's service manual for
details, if necessary.
! CAUTION
Do not use a drum puller or a torch to remove a brake drum.
Drum distortion may result.
NOTICE
If the drum proves difficult to remove, insert a narrow screwdriver
through the brake adjusting hole in the backing plate and disengage
the adjuster lever from the adjuster nut starwheel teeth. With adjuster
lever disengaged as shown in Figures 8 and 9, insert a brake adjust-
ing tool (or screw driver) through the adjusting hole to engage the
adjusting nut teeth. Move the teeth upward enough times to retract
the brake shoes to clear the drum. If the drum is rusted to the axle
input flange yoke pilot, tap the center of the brake drum with a non-
metallic mallet to loosen.
(5) Inspect the brake per the INSPECTION procedure in this service
manual.
(6) Detach the parking brake apply cable and lever return spring from end
of brake lever. Remove the apply lever guide (on Release brakes).
(7) Detach adjuster cable from the adjuster lever and slide adjuster cable
off the adjuster cable guide, remove retaining tab if so equipped. See
Figure 1.
(8) Remove the anchor screw. See Figure 11.
NOTICE
On Release 1 brakes with a hex socket anchor screw, the use of a
thread-locking compound may prevent removal of the anchor screw
with a hex key and torque in excess of 55 N

m (40 ft.-lbs.) May break or
deform a 6 mm hex key. If necessary, use a pipe wrench, vice grips, or
similar tool on the knurling of the head to loosen the anchor screw.
Replace screw if removed, regardless of condition.