Table 3. Charging System (60 Amp) Troubleshooting Procedure.

TM 9-2320-361-24-1

0012 00

BATTERY AND CHARGING SYSTEM TROUBLESHOOTING (Contd)

Table 3. Charging System (60 Amp) Troubleshooting Procedure.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

NOTE

1. NO ALTERNATOR

OUTPUT

Voltage regulator is built into

alternator.

If STE/ICE-R is available, perform

NG 50 Charging Circuit Tests

(WP 0018 00).

1. Adjust loose belts (WP 0084 00).

Test 1. Check for loose or missing

belts.

2. Replace missing belts

(WP 0084 00).

Test 2. Test charging system output

voltage.

NOTE

If vehicle is equipped with a slave

receptacle, check voltage at

receptacle.

1. Open door of battery

compartment. Loosen two

thumbscrews and slide

batteries onto running board

(WP 0127 00).

2. Start engine

(TM 9-2320-361-10).

3. Set engine speed at

1200 RPM.

4. Turn vehicle headlights and

accessories to ON position.

5. Use multimeter to check

1. If battery voltage measures 24.0

battery voltage. Charging

VDC, alternator has no output. Go

voltage on batteries should be

to test 3 and check input voltage.

28.0 0.2 VDC.

2. If battery voltage is between 24.0

and 26.0 VDC, alternator output is

weak. Go to test 3 and check input

voltage.

3. If battery voltage measures 28.0

0.2 VDC and voltmeter on

instrument panel shows no voltage,

an electrical problem exists

between alternator and power

accessory switch. Go to

WP 0012 00, table 2, malfunction 1,

test 4, step 3.

4. If battery voltage measures

between 26.0 and 30.0 VDC, adjust

voltage regulator (WP 0085 00) in

alternator until voltage across

batteries is 28.0 0.2 VDC. Go to

test step 6 and check regulator

stability.

0012 00-19