TM 10-4320-344-24
2.23.9 Wheel Cylinder and Brake Shoes Replacement.
This task covers:
2.23.9.1 Disassembly
2.23.9.3 Assembly
2 .
23 . 9 . 2 R e p a ir
2.23.9.4 Adjustment
INITIAL SETUP
Tools
General Mechanic’s Automotive
Tool Kit, Appendix B, Section
I I I ,
Item 1
Trestle, Appendix B, Section III, Item 2
Material/Parts
Brake Fluid, Appendix C, Item 4
Equipment Conditions
Pumping station shut down, TM 10-4320-
344-10.
Equipment Conditions
Hub and Wheel Bearing
2 .
2
3 .
2.
(Continued)
removed, paragraph
Brake Lines disconnected from backing
plate, paragraph 2.23.6.
General Safety Instructions
Do not work on equipment that is not
securely stabilized to prevent rolling
o r s l i d i n g.
Do not work on equipment without follow-
ing standard shop safety practices.
This procedure applies to Model 609-A.
The procedures for Models 609-c and
US636HCCD-1 are similar.
2.23.9.1 Disassembly.
Do not work on equipment that is not securely stabilized to prevent rolling
or sliding. Ensure both wheels of equipment have chocks that are secure.
Failure to obey this warning may result in serious personal injury.
a.
Remove horseshoe clamp (Figure 2-176,
1) and flat washer (2) from mounting pin
of handbrake actuator (3).
b.
Remove two springs (4) and washer (5) from anchor pin (6) and brake shoes (7
and 8).
c .
Remove four hold
d.
Remove adjusting
e .
Remove two brake
f .
Remove handbrake
down caps (9), two springs (10) and two hold down pins
screw (12) and pullback spring (13).
shoes (7 and 8) and hand brake actuator arm (14) .
actuator (3) from secondary brake shoe (7) and remove
( 1 1 ).
handbrake cable (15) from handbrake actuate; (3).
g .
Remove handbrake cable (15) and cable clamp (16) from backing plate (17).
h.
Remove spring (18) from primary brake shoe (8).
i .
Remove two bolts (19) and wheel cylinder (20) from backing plate (17).
j .
Remove five nuts (21), bolts (22), and backing plate (17) from axle (23).
2.23.9.2 Repair.
a.
Inspect all components and mounting hardware for damage.
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