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 929 of 1313
LOW AIR PRESSURE WARNING BUZZER WILL NOT SHUT OFF (AIR PRESSURE GAUGES AT NORMAL
SYSTEM PRESSURE) - Continued
STEP
2.
IS SECONDARY LOW AIR PRESSURE SWITCH WORKING PROPERLY?
a.
Check continuity for secondary low air pressure switch.
b.
Make sure air gauges read at least 90 psi.
T0105DAA
578
578A
Primary
Switch
Secondary
Switch
57
Figure 2.
Pressure Switch.
TM 9-2320-272-23-1
0110
0110-4
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