TM-9-2320-272-23-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 1 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-1 - Page 371 of 1313
LOW OIL PRESSURE - Continued
STEP
3.
IS OIL PRESSURE WITHIN LIMITS 55-75 psi (379-571 kPa)?
a.
Stop vehicle engine.
b.
Make sure engine oil level is correct.
T0061DAA
Figure 3.
Engine Oil Pressure Sending Unit.
c.
Remove oil pressure sending unit (Volume 2, WP
0333).
d.
Install pressure gauge.
e.
Start engine and hold vehicle engine speed at 2100 RPM.
f.
Oil pressure gauge should read between 55-75 psi (379-571 kPa).
g.
Shut off engine.
h.
Remove pressure gauge.
i.
Install oil pressure sending unit.
CONDITION/INDICATION
IS OIL PRESSURE WITHIN LIMITS 55-75 psi (379-571 kPa)?
DECISION
NO - Notify supervisor. It is possible that another troubleshooting work package applies.
YES - Perform Oil Pressure Gauge Inoperative troubleshooting (WP
0103).
TM 9-2320-272-23-1
0017
0017-4
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