TM 10-4320-344-24
b .
Replace all defective components.
2.23.9.3 Assembly.
a.
Position backing plate (17) on axle (23) and secure with five bolts (22) and
nuts (21).
b.
Position wheel cylinder (20) on backing plate (17) and secure with two
b o l t s ( 1 9 ).
c .
Install spring (18) on primary brake shoe (8).
d.
Install cable clamp (16) and handbrake cable (15) in backing plate (17).
e .
Install handbrake cable (15) into handbrake actuator (3) and install handbrake
actuator (3) into secondary brake shoe (7).
Primary brake shoe may have shorter brake lining.
f .
Install primary brake shoe (8) on backing plate (17), wheel cylinder (20), and
handbrake actuator arm (14). Ensure primary brake shoe (8) engages wheel
c y l i n d e r ( 2 0 ).
g.
Install hold down pin (11), spring (10), and two hold down caps (9) on hold
down pin (11) securing primary brake shoe (8) to backing plate (16).
h.
Install secondary brake shoe (7) and hand-brake actuator (3) to backing plate
(17).
Ensure secondary brake shoe (7) engages handbrake actuator arm (14).
i .
Install hold down pin (11), spring (10), and two hold down caps (9) on hold
down pin (11) securing secondary brake shoe (7) to backing plate (17).
j .
Install flat washer (2) and horseshoe clamp (1) on mounting pin of handbrake
a c t u a t o r ( 3 ).
If new brake shoes have been installed,
it may be necessary to shorten
adjusting screw to make installation of brake-drum
Adjusting wheel of adjusting screw must be aligned
backing plate.
k.
Install adjusting screw (12) and pullback spring (13)
primary and secondary shoes (7 and 8).
assembly easier.
with access hole in
between bottom of
1.
Install washer (5) and two pullback springs (4) to primary and secondary shoes
(7 and 8) and anchor pin (6).
2.23.9.4 Adjustment.
a.
b.
c .
d.
e .
f .
g .
Using trailer jacks, raise tires off ground.
Release handbrakes.
Remove cover (24) from backing plate (17).
Insert flat-tip screwdriver through access hole in backing plate (17).
Adjust adjusting screw (12) until slight drag
wheel assembly.
Remove flat-tip screwdriver and replace cover
Engage handbrake and lower trailer to ground.
is felt when turning tire and
(24) in backing plate (17
2-399
NOTE
NOTE