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 45 of 1313
TABLE OF CONTENTS - Continued
Page No.
WP Sequence No.
Figure 3.
Coolant Temperature Gauge Voltage Test.
.........................................................................
0106-5
FUEL GAUGE INOPERATIVE.
....................................................................................................................
WP 0107
Figure 1.
Fuel Level Sending Unit.
......................................................................................................
0107-2
Figure 2.
Fuel Level Gauge Test.
........................................................................................................
0107-4
Figure 3.
Fuel Selector Switch.
............................................................................................................
0107-5
Figure 4.
Fuel Gauge Test.
..................................................................................................................
0107-6
Figure 5.
Fuel Gauge Test.
..................................................................................................................
0107-7
BATTERY/ALTERNATOR GAUGE INOPERATIVE.
...................................................................................
WP 0108
Figure 1.
Battery-Alternator Gauge.
....................................................................................................
0108-2
Figure 2.
Battery-Alternator Gauge Test.
............................................................................................
0108-3
HORN INOPERATIVE.
................................................................................................................................
WP 0109
Figure 1.
Horn Air Supply.
...................................................................................................................
0109-2
Figure 2.
Horn Circuit Breaker.
............................................................................................................
0109-3
Figure 3.
Horn Circuit Breaker Test.
....................................................................................................
0109-4
Figure 4.
Horn Solenoid Test.
..............................................................................................................
0109-5
Figure 5.
Horn Solenoid Test.
..............................................................................................................
0109-6
Figure 6.
Horn Switch Test.
.................................................................................................................
0109-8
LOW AIR PRESSURE WARNING BUZZER WILL NOT SHUT OFF (AIR PRESSURE GAUGES
AT NORMAL SYSTEM PRESSURE).
.........................................................................................................
WP 0110
Figure 1.
Pressure Switch.
..................................................................................................................
0110-2
Figure 2.
Pressure Switch.
..................................................................................................................
0110-4
Figure 3.
Pressure Switch Wire 57.
.....................................................................................................
0110-6
Figure 4.
Pressure Switch Wire 578A.
.................................................................................................
0110-8
Figure 5.
Failsafe Warning Control Module.
......................................................................................
0110-10
LOW AIR PRESSURE WARNING BUZZER WILL NOT SHUT OFF AND PARKING BRAKE
WARNING LIGHT FLASHES WITH HAND/PARKING BRAKE IN ANY POSITION (AIR
PRESSURE NORMAL).
...............................................................................................................................
WP 0111
Figure 1.
Pressure Switch.
..................................................................................................................
0111-2
TM 9-2320-272-23-1
xxiv
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