Table 1. Preventive Maintenance Checks and
Services (PMCS) for M915A3 - Continued.
Not Fully Mission
At 1700-2100 rpm, minimum engine oil pressure
for safe operation is 15 psi (103 kPa). If gage does
not show at least 15 psi (103 kPa), shut down
engine and notify supervisor. All warning lights
should go out in approximately 7 seconds. Failure
to follow this caution will damage engine.
a. Check oil pressure gage. Read-
ing should be 15-50 psi (103-
344 kPa) at idle.
a. Gage reading is not
b. Check primary and secondary
air pressure gages for 90-120
psi (621-827 kPa) (green band).
b. Gage reads less than
65 psi (448 kPa)
stays on, or gage is
c. Check that voltmeter registers
within green band.
c. Needle is in yellow
or red band.
d. Check that fuel supply gage
registers and indicates adequate
fuel for mission.
e. Check air cleaner restriction
shows 20 in. (51
depressed, transmission in
(Drive), and engine at idle, pull
parking brake valve out and
release service brake pedal. Vehi-
cle should not move.
parking brake applied.