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 255 of 1176

TM 9-2320-361-24-1

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INDICATORS, GAUGES, AND WARNING SYSTEM TROUBLESHOOTING (Contd)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

10. HORN DOES NOT

OPERATE (Contd)

Test 4. Test horn switch continuity.

1. Disconnect lead 25 from air

horn solenoid to protect

multimeter.

2. Reinstall horn button cap,

spring, and contact

(WP 0113 00).

3. Set multimeter to RX 1 scale.

4. Connect negative lead to a

good frame ground.

5. Touch positive lead to lead 25

and press down until contact

touches base plate.

1. If continuity is present, reconnect

lead 25 and recheck horn operation.

2. If continuity is not present, remove

horn button and clean or replace

horn button (WP 0113 00).

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

TEST 2

STEP 4

TEST 2

STEP 3

HORN SOLENOID

PIN A

PIN B

25

25

TEST 4

STEP 5

TEST 3

STEP 4

TEST 1

STEP 5

25

LEAD 25

END OF WORK PACKAGE