Table 1. Unit Preventive Maintenance Checks and Services (PMCS) for the M915 Family of Vehicles - Continued.

TM 9-2320-303-24-1

Table 1. Unit Preventive Maintenance Checks and Services (PMCS)

for the M915 Family of Vehicles - Continued.

LOCATION

ITEM TO

ITEM

MAN-

CHECK/

NOT FULLY MISSION

NO.

INTERVAL HOURS

SERVICE

PROCEDURE

CAPABLE IF:

Semi-

Road Test,

f. While vehicle is moving,

(Con't) annual

engage engine Jake brake and

Brakes

check operation in all switch

positions (2, 4, and 6 cylinders

braking power). Ensure that

vehicle speed drops in each

position, with maximum brak-

ing power with all 6 cylinders

engaged in braking.

WARNING

Cautiously feel each wheel hub and brakedrum. Wheel hubs and

brakedrums may be hot. Failure to follow this warning may result

in serious burns.

g. Immediately after road test,

carefully check and compare

each wheel hub and brakedrum

for overheating, which could

indicate a dragging brake. A

cool wheel hub and brakedrum

could

mean

improperly

adjusted, defective or inopera-

tive brakes.

Semi-

Road Test,

Check operation of interaxle lock-

out (TM 9-2320-303-10).

annual

Interaxle

Lockout

Road Test,

Check vehicle response to steer-

Semi-

ing wheel action. Vehicle should

Steering

annual

respond quickly. With vehicle on

straight level ground, lightly hold

steering wheel to check for pull or

wander. With vehicle in motion,

free play should be no more than 2

in (6.4 cm) in either direction.

Semi-

Road Test,

Observe how vehicle responds to

road shocks. Shifts, knocks or con-

annual

Suspension

stant bouncing indicate possible

malfunctions.

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