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 243 of 1176

TM 9-2320-361-24-1

0014 00

0014 00-7

INDICATORS, GAUGES, AND WARNING SYSTEM TROUBLESHOOTING (Contd)

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

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

3. FUEL GAUGE

INOPERATIVE

(Contd)

Test 4. Test continuity of lead 28.

1. Turn power accessory switch

to OFF position.

2. Disconnect lead 28 from fuel

gauge and from fuel level

sending unit.

3. Connect jumper wire from

fuel level sending unit end of

lead 28 to frame ground.

4. Set multimeter to RX 1 scale.

5. Connect negative lead of

multimeter to frame ground

and touch positive lead of

multimeter to contact of

lead 28.

Test 5. Test continuity of fuel level

sending unit.

1. Set multimeter to RX 1 scale.

2. Connect multimeter leads to

fuel sending unit.

3. Position float in empty

position.

4. Set multimeter to RX 10 scale.

5. Position float in full position.

1. If continuity is present, reconnect

lead 28 and recheck fuel gauge

operation.

2. If continuity is not present, repair

or replace wiring (WP 0090 00).

1. If resistance is 0.00–0.50 ohms, go

to step 4.

2. If resistance is not 0.00–0.50 ohms,

replace fuel sending unit

(WP 0109 00).

1. If resistance is 29.50–31.50 ohms,

reinstall fuel level sending unit

(WP 0109 00) and recheck gauge

operation.

2. If resistance is not 29.50–31.50 ohms,

replace fuel level sending unit.

(WP 0109 00).

TEST 4

STEP 5

TEST 1

STEP 3

TEST 5

STEPS 3

AND 5

28

FUEL

GAUGE

28

FUEL LEVEL

SENDING UNIT