TM-9-2330-356-14
SEMITRAILER, TANK: 5000 GALLON, BULK HAUL, SELF LOAD/UNLOAD M967 AND M967A1; SEMITRAILER, TANK: 5000 GALLON, FUEL DISPENSING, AUTOMOTIVE M969 AND M969A1; SEMITRAILER, TANK: 5000 GALLON, FUEL DISPENSING, UNDER/OVERWING AIRCRAFT M970 AND M970A1
TECHNICAL MANUAL; OPERATOR’S, UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1990
TM-9-2330-356-14 - Page 220 of 528
TM 9-2330-356-14
WARNING
Dry cleaning solvent P-D-680 is toxic and
flammable.
Always
wear protective
goggles and gloves, and use only in l
well-ventilated area. Avoid contact with
skin, eyes, and clothes, and DO NOT
breathe vapors. DO NOT use near open
flame or excessive heat. The solvent’s
flash point la 1OOºF-138°F (38°C-59°C).
If you become dizzy while using cleaning
solvent, immediately get fresh air and
medical help. If solvent contacts eyes,
Immediately wash your eyes with water
and get medical aid.
Compressed air used for drying or
clearing purposes must not exceed 30 psi
(207 kPa).
Wear protective clothing
(goggles and gloves) and use caution to
avoid injury to personnel.
(10) Clean anchor pins, rollers, roller retainers,
spring pins, and brake shoe return spring with dry cleaning
solvent (item 11, Appendix E). Dry the parts with low
pressure compressed air.
(11) Refer replacement of brake linings and
refacing of the drums to direct support maintenance.
d.
Installation.
(1) Install spider bolt, washer, and nut. Do not
tighten (fig. 4-63).
(2) Install spring pins cm brake shoes.
(3) Install rollers and roller retainers
shoes.
on brake
(4) Place brake shoes into position on brake
spider, and install upper and lower anchor pins and anchor
pin washers.
(5) Install anchor pin retaining rings on upper
and lower anchor pins.
(6) Using brake spring pliers, install brake shoe
return spring.
e.
(7) Tighten spider nut and bolt to 100-120 lb.-ft.
Assembly
and Adjustment.
(1) Install wheel and drum assembly (para 4-49).
(2) Adjust slack adjuster (para 4-34).
Change 3
4-35.
Brake Wedge Assembly, M967, M969, and
M970 except M970 SN TC-0843, TC-0844,
and TC-103 thru TC-178 (Fig. 4-64).
CAUTION
Before removing any wedge actuator or at-
tempting to release spring brake or removing
a clamp band, block wheels to prevent ve-
hicle movement.
a.
Removal.
(1) Remove brake air chamber (paras 4-37 and
4-39),
(2) Remove wedge assembly by pulling it straight
out of plunger housing.
Figure 4-64. Wedge Assembly Removal or Installation
(M967, M969, and M970 except M970 SN TC-0843,
TC-0844, and TC-103 thru TC-178).
b.
Inspection.
WARNING
Compressed air used for drying or cleaning
purposes must not exceed 30 psi (207 kPa).
Wear protective clothing (goggles and
gloves) and use caution to avoid Injury to per-
sonnel.
(1) Clean wedge assembly thoroughly with mild
soap solution and dry with low pressure compressed air.
(2) Inspect for damaged rubber
retaining cage, rollers, or broken spring.
(3) Replace wedge assembly if
boot, roller
damaged or
broken.
4-84
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