TM 9-2350-247-20-1
100 AMP CHARGING SYSTEM MALFUNCTIONS (M548A1)
0023 00
INITIAL SETUP:
Maintenance Level
Unit
Tools and Special Tools
General Mechanic’s Tool Kit (WP 0541 00, Item 57)
STE/ICE-R Test Set (WP 0541 00, Item 6)
Multimeter (WP 0541 00, Item 29)
Jumper Wire
Personnel Required
Unit Mechanic
References
See your -10
(WP 0108 00)
Equipment Condition
Engine stopped (see your -10)
Carrier blocked (see your -10)
Engine disconnect lever IN (see your -10)
Power plant rear access door/panel removed
(see your -10)
Cab personnel seats raised (see your -10)
T
NOTE
There i s a n early and late model of auxiliary power
receptacle. Both early and late models are shown.
1. Start engine and run at 1200 rpm (see your -10).
2. Remove cover (1) from auxiliary power receptacle (2).
3. Measure voltage between contacts (+) (3) and (-) (4) on auxiliary
power receptacle (2).
4. Does multimeter read less than 26 or more than 29 volts?
YES
NO
TN
1. Stop engine (see your -10).
2. Go to battery/generator indicator
malfunctions (WP 0052 00).
Y
NOTE
If no voltage is present the generator field switch may be
defective.
1. Check generator field switch (WP 0288 00).
2. Has regulator been adjusted?
YES
NO
YN
1. Adjust regulator (WP 0249 00).
2. Verify no faults found.
0023 00-1
