TM 5-3810-306-20
b. Inspect wedge (1) for cracks or wear and
replace if necessary.
c. Inspect roller retainer cage (2) for damage and
wear. Replace as necessary.
d. Ensure groove for snap ring on wedge shaft (1)
is clean and sharp.
2.
INSPECT BRAKE CHAMBER COMPONENTS.
a. Inspect diaphragm (17) for splits or cracking and
replace if necessary.
b. Inspect housings (12 and 18) for cracks and
damage. Replace as required.
REASSEMBLY:
1.
ASSEMBLE WEDGE ASSEMBLY.
a. Insert wedge shaft (1) into roller retainer cage
(2).
b. Install two rollers (3) into cage (2). Bend tabs
slightly inward to secure rollers without limiting
roller action.
c. Install spring retainer (4) over wedge shaft (1)
and position it centrally over cage (2) and roller
assembly.
NOTE
Current
production
and
service
replacements use a spring retainer (4)
that has two tabs or protrusions on
the OD. These tabs serve to align
wedge assembly as it is installed into
plunger
housing
by
engaging
grooves in wedge bore. If the
plunger housing is not equipped with
such
NOTE (CONT)
grooves, remove tabs at breakoff
marks and file OD of retainer smooth.
d. Install wedge spring (5) over wedge shaft (1),
large coil diameter first. Add spring retainer
washer (6) and compress spring (5) by hand far
enough to expose cotter pin hole and install snap
ring (7).
2.
ASSEMBLE BRAKE CHAMBER.
a. Install wedge guide (13), boot (14), push rod
(15), diaphragm plate (16) and diaphragm (17).
WARNING
Prior
to
installing
spring
brake
chamber (18), ensure spring (5) is
caged.
b. Install spring brake chamber (18) on the non-
pressure housing (12).
c. Spread clamp ring (9) and install bolts (11) and
nuts (10) that secure spring brake chamber (18)
to non-pressure housing (12).
3.
INSTALL BRAKE CHAMBER. (REFER TO PAGE
11-4.)
4. TEST FOR PROPER OPERATION. (REFER
TO TM 5-3810-306-10.)
END OF TASK
11-10
