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 246 of 1176

TM 9-2320-361-24-1

0014 00

0014 00-10

INDICATORS, GAUGES, AND WARNING SYSTEM TROUBLESHOOTING (Contd)

Table 1. Indicator, Gauges, and Warning System Troubleshooting (Contd).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

5. VOLTMETER

INOPERATIVE

NOTE

If STE/ICE-R is available, perform

NG 31 gauge test (WP 0018 00).

Test 1. Test voltmeter.

1. Turn power accessory switch

to ON position. Do not start

engine.

2. Voltmeter should rest between

lower edge of green area and

upper edge of yellow area on

gauge (24 volts).

3. Start engine (TM 9-2320-361-10)

and observe voltmeter on

instrument cluster.

4. Voltmeter should rise as

engine speeds up and stop

over white dot in green area

(approximately 28 VDC).

Test 2. Test battery voltage to

alternator. Go to WP 0012 00,

table 3, malfunction 1, test 3.

Check frame ground to multimeter.

1. Set multimeter to RX 1 scale.

2. Connect negative lead to

panel ground on instrument

panel.

3. Touch positive lead to

voltmeter bracket. Continuity

should be present. Ensure

instrument panel is grounded.

If voltmeter does not perform as

specified in steps 2 and 4, stop engine

and go to test 2.

1. If continuity is present, reinstall

instrument panel cluster

(WP 0093 00) and recheck

instrument panel cluster.

2. If continuity is not present, remove

alternator (WP 0085 00) and check

for corrosion around alternator

body.

TEST 2

INSTRUMENT

PANEL

VOLTMETER

VOLTMETER

BRACKET