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 451 of 1417
IN-CHASSIS RUN-IN
1.
Start and idle engine 800 to 1,000 rpm for 5 to 10 minutes, observing oil pressure (TM 9-2320-272-10).
CAUTION
If oil pressure drops below 10 psi (68 kPa) or rises sharply above 30 psi (207 kPa), stop
engine and correct as required.
2.
Stop engine and inspect coolant and oil levels (TM 9-2320-272-10).
3.
Inspect engine for leaks (TM 9-2320-272-10).
4.
Start and run engine at 1/4 to 1/2 throttle until water temperature gauge (Figure 31, Item 2) reaches
165°F
to
195°F
(73°C to 90°C).
5.
Stop engine and inspect coolant and oil levels (TM 9-2320-272-10).
6.
Inspect engine for leaks (TM 9-2320-272-10).
7.
Start and idle engine at 800 to 1,000 rpm as indicated on tachometer (Figure 31, Item 1) for 5 to 10 minutes,
observing oil pressure gauge (Figure 31, Item 3) for proper range (TM 9-2320-272-10).
M9280DAA
2
1
3
Figure 31.
In-Chassis Run-In.
END OF TASK
TM 9-2320-272-23-2
0211
0211-54
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