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 276 of 1417
FIELD MAINTENANCE
G06: GOVERNOR CHECK/POWER TEST
INITIAL SETUP:
Personnel Required
(2)
References
TM 9-2320-272-10
References (cont.)
WP
0194
WP
0204
TROUBLESHOOTING PROCEDURE
G06: GOVERNOR CHECK/POWER TEST
CAUTION
Governor operation must be checked before performing the power test to avoid possible
damage.
STEP
1.
Governor operation.
a.
Start engine (TM 9-2320-272-10).
b.
Watch VTM display.
c.
Gradually increase engine speed to maximum governor speed.
Table
1.
Maximum Governor Speed.
Vehicle
Maximum Governor Speed
Loaded
2,100 RPM
Unloaded
2,100 RPM +300 -400 RPM
d.
Press farther on accelerator to full throttle.
CONDITION/INDICATION
Does engine RPM remain below maximum at full throttle?
DECISION
YES - Go to Step (2).
NO - Notify supervisor.
TM 9-2320-272-23-2
0193
0193-1
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