TM-9-2320-272-23-2
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 2 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-2 - Page 496 of 1417
IN-CHASSIS RUN-IN
WARNING
Ensure engine compartment is clear of tools and other materials before starting engine.
Failure to comply may result in injury or death to personnel.
1.
Inspect engine coolant and oil levels (TM 9-2320-272-10).
2.
Pull emergency stop control (Figure 27, Item 4) out all the way to prevent engine from starting while priming.
CAUTION
•
Do not operate M939A2 series vehicles starters continuously for more than 30 seconds
at a time. Wait two minutes between periods of starter operation. Failure to do so may
cause damage to equipment.
•
If oil pressure drops below 10 psi (68 kPa) or rises sharply above 30 psi (207 kPa), stop
engine and correct as required.
3.
Crank engine until oil pressure registers on oil pressure gauge (Figure 27, Item 3).
4.
Push emergency stop control (Figure 27, Item 4) in all the way.
5.
Start and run engine at 1,000 to 2,000 rpm as indicated on tachometer (Figure 27, Item 1) for 30 minutes,
observing oil pressure (Figure 27, Item 3) and water temperature (Figure 27, Item 2) gauges for proper ranges
(TM 9-2320-272-10).
6.
Inspect engine for leaks (TM 9-2320-272-10).
1
2
3
4
M9381DAA
Figure 27.
Priming Lube System.
TM 9-2320-272-23-2
0213
0213-35
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