TM-9-2320-361-24-1

2-1/2 TON, 6X6, M44A2 SERIES TRUCKS

TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE PART 1 OF 2

AUGUST 2006

TM-9-2320-361-24-1 - Page 209 of 1176

TM 9-2320-361-24-1

0012 00

0012 00-25

BATTERY AND CHARGING SYSTEM TROUBLESHOOTING (Contd)

Table 4. Charging System (100 Amp) Troubleshooting Procedure.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. NO ALTERNATOR

OUTPUT

If STE/ICE-R is available, perform

NG 50 Charging Circuit Tests

(WP 0018 00).

Test 1. Check for loose or missing

belts.

1. Adjust loose belts (WP 0084 00).

2. Replace missing belts

(WP 0084 00).

START

SWITCH

POS

C

CA

2

2

4

3

1

14

68

214

6

D

D

C

F

E

IN

OUT

B

B

A

C

D

B

10

10

10

11

11

27

27

74A

+24V TO FLD

+24V TO FLD

+1.5V TO 24V

74B

55

1

74

11

15

25

B

E

+ FLD

– FLD

NEG

STARTER

RELAY

12-VOLT

BATTERY

SLAVE

RECEPTACLE

STARTER

MOTOR

STARTER

SOLENOID

VOLTAGE

REGULATOR

100-AMP

ALTERNATOR

POWER

ACCESSORY

SWITCH

HORN

CIRCUIT

BREAKER

ADJUSTABLE

VOLTAGE

AMPLIFIER