MAINTENANCE OF M939 SERIES VEHICLE - OD1661 - LESSON 1/PE 1
5) Always isolate the system where the malfunction occurs and
then locate the defective component.
h.
The offset value range for the current probe is -225 to +225.
i.
The first troubleshooting step is to check the transmission oil
level according to LO 9-2320-272-12.
j.
Each of these cells should be within 25 points of each other.
k.
When testing the LOW AIR
PRESSURE
WARNING
BUZZER,
the
air
pressure should be below 60 psi.
l.
With the switch in
the
LOW
position,
the
voltage
indicated
should be 12 to 13 volts.
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