TM 9-2330-271-14&P
b.
(2) Inspect support and adjuster assembly (1)
for breaks or cracks. Replace if defective.
(2) Inspect star wheel (3) for broken or missing
teeth. Replace if defective.
(3) Inspect adjusting screw (4) for damaged
threads. Replace defective screw.
(4) Inspect brake backing plate (9). Straighten
and paint as required. Replace if cannot be made
serviceable.
(1) Slide one washer (8) on threaded end of
spring and bolt assembly (10) and install, threaded end
first, through opening at rear of brake backing plate (9).
(2) Install second washer (8) and adjusting
gear (7) on threaded end of stud.
(3) Secure gear to stud with lock washer (6)
and nut (5).
(4) Following scribed marks made at removal,
position brake backing plate (9) against flange of axle
and secure with eight cap screws, lock washers, and
nuts.
in large opening at end of support and adjuster
assembly.
Figure 4-30. Brake backing plate - exploded view.
(6) Before installing support and adjuster
assembly, make certain adjusting screw (4) is properly
(2) Remove two nuts, two lock washers and
positioned in support (2) to receive the brake shoe which
two cap screws at rear of axle flange. This hardware
seats on its top surface. The adjusting screw should be
partially secures upper anchor support and adjuster
recessed 1 inch below rim of the support. Rotation of the
assembly (1) to brake backing plate (9) and brake
star wheel (3) will adjust screw to required dimension.
backing plate to axle flange.
(7) Following scribe markers made at removal,
(3) Remove two cap screws (12) and lock
position each support (2) on front of brake backing plate
washers (11) securing each support and adjuster
(9). Make certain star wheel meshes with installed
assembly to brake backing plate.
adjusting gear.
(4) Carefully lift support and adjuster assembly
(8) Secure each support and adjuster assembly
from backing plate and out of mesh with adjusting gear
to backing plate with two cap screws (12) and lock
(7).
washers (11).
NOTE
NOTE
Care should be taken to avoid
The cap screws are installed in
mounting holes at extreme ends of
which will drop out of support and
support and adjuster assembly.
adjuster assembly as they are
(9) Install two cap screws (from rear of axle
removed.
flange) through two center mounting holes of upper
(5) Disconnect hydraulic line at rear of backing
support and adjuster assembly. Secure cap screws with
plate.
two lock washers and nuts.
(6) Remove eight nuts, lock washers and
screws securing brake backing plate to axle flange.
4-38. Hydraulic Master Cylinder
(7) Slide brake backing plate off axle spindle.
(8) Remove nut (5) and lock washer (6)
a. General. The master cylinder is attached to the
securing adjusting gear (7) to spring and bolt assembly
brake air chamber and the assembly is mounted on a
(10).
bracket under the center rear of dolly frame.
(9) Remove gear, two washers (8), and spring
and bolt assembly from brake backing plate (9).
4-45