TM 10-4610-240-24
TM 08580C-2412
TO 40W4-13-22
3-68. (MODEL WPES-1) BRAKE ASSEMBLY MAINTENANCE - continued.
DISASSEMBLY
a.
Remove two anchor pin nuts (19), anchor pin lockwashers (20), anchor pins (25), flat washers (26), retaining
rings (27), and anchor pin links (22).
b.
Remove two flat washers (26) and retaining rings (27) from anchor pins (25).
c.
Remove brakeshoe assembly (23) from spider (21).
d.
Remove retract spring (30) and two retract spring pins (31).
e.
Remove anchor pin retainer (29) and brake rollers (28).
f.
Remove two lubrication fittings (38 and 40).
g.
Remove cam lockring (39), camshaft spacer washer (37), and seal (36).
h.
Remove camshaft (32), camshaft retaining washer (33), and seal (34).
i.
Using brass drift pin, tap spider bushing (35) out of spider (21).
CLEANING
a.
Using rags, wipe grease that is not solidified off all parts.
WARNING
Drycleaning solvent P-D-680 is highly toxic and can ignite organic materials,
nitrates, carbides, and chlorates. Wear eye, skin, and respiratory protection. Use
in a well-ventilated area.
NOTE
Repeat steps b through d until all grease is removed.
b.
Soak spider, slack adjuster, and other parts, except brakeshoes, with solidified grease in drycleaning solvent
for 1 hour.
c.
Using stiff-bristled brush, scrub grease off all parts except brakeshoes.
d.
Using clean, lint-free rags, wipe all parts dry.
WARNING
Compressed air can blow dust into the eyes. Wear eye protection. Do not exceed
30 [psi (207 kPa) air pressure.
e.
Hold rags loosely over both ends of tube through spider to catch dirt and solvent.
Blow low-pressure
compressed air into lubrication fitting hole on spider.
f.
Move rags so that clean material is over ends of tube and blow air into lubrication fitting hole. Repeat until
rags stay clean and dry.
3-350
