TM 9-2320-302-20
0021 00-20
Table 1. Unit Preventive Maintenance Checks and Services (PMCS)
for the M915A3 Tractor Truck - Continued.
ITEM
NO.
INTERVAL
LOCATION
PROCEDURE
NOT FULLY MISSION
CAPABLE IF:
ITEM TO
CHECK/
SERVICE
37
Semi-
annual
Cab
Compartment,
Seats and Seat
Belts
Check seats and seat belts for loose mount-
ings and damage. Replace seat/seat mounts if
damaged. Replace seat belts if any seat belt
system shows cuts, fraying, extreme wear,
abrasions to seat belt webbing or damage to
buckle or latch plate retractor hardware.
38
Annual
Engine
Compartment,
Cooling System
a. Test, drain, and refill cooling system in
accordance with TB 750-651.
b. Change water filter element.
39
Annual
Air Dryer
Service air dryer.
40
Annual
Transmission
Drain transmission fluid, replace filters, and
refill (WP 0123 00).
41
Annual
Rear Axles,
Differentials
a. Use socket (Item 29, WP 0236 00) to
remove plugs (31) and drain fluid while
assemblies are still warm from operation.
Check magnetic drain plugs for excessive
metal particle buildup. Notify Direct Sup-
port Maintenance if this condition exists.
Clean plugs.
31
31
