Table 1. Unit Preventive Maintenance Checks and Services (PMCS)
for the M915A3 Tractor Truck - Continued.
NOT FULLY MISSION
Engine oil must be sampled initially at 90 days of operation, as prescribed by
DA Pam 738-750. Thereafter, it is sampled semiannually unless AOAP
results indicate otherwise.
Raise hood and take sample of engine oil:
a. Start engine and bring to operating temper-
ature (TM 9-2320-302-10).
b. Remove cap from discharge port. Clean
sampling valve (1) with a rag.
c. Press knob of sampling valve (1) and col-
lect approximately 2 oz. (60 ml) into a suit-
able container. Discard oil in accordance
with local policies and regulations.
d. Collect oil sample into clean sample bottle
to approximately 1/2 in (1.3 cm) below
neck of sample bottle.
e. Install cap on discharge port and check for