TM 9-2320-303-10
Table 2-1. Preventive Maintenance Checks and
Services (PMCS) for M915A4 (Con't).
Location
Item To
Check/
Not Fully Mission
Item No.
Interval
Service
Procedure
Capable If:
12
Before
Instru-
ment
Panel
Gages
and
Indicator
and
Warning
Lights
At 1700-2100 rpm, minimum engine oil pressure
for safe operation is 15 psi (100 kPa). If gage
does not show at least 15 psi (100 kPa), shut
down engine and notify supervisor. Failure to
follow this caution will damage engine.
a. Check
oil
pressure
gage. Reading should
be 15-50 psi (100-295
kPa) at idle.
a. Gage reading is not within
limits.
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)
(yellow
band),
warning
buzzer
stays on, or gage is not
operating.
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 indicator.
e. Indicator window shows
20 in. of water.
13
Before
Parking
Brake
With service brake pedal
depressed, transmission
in Drive (D), and engine
at idle, pull out on parking
brake valve, then release
service
brake
pedal.
Vehicle should not move.
Vehicle moves with parking
brake applied.
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