INDIVIDUAL LIGHTS INOPERATIVE

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ELECTRICAL SYSTEMS INOPERATIVE (Contd).

TM-5-1940-277-20 Boat Bridge Erection Twin Jet Aluminum Hull MODEL USCSBMK1 (1940-01-105-5728) MODEL USCSBMK2 (1940-01-218-9165) Manual

WINDSHIELD WIPERS FAIL TO OPERATE

TM 5-1940-277-20

TM 1940-20/2

Section IV. TROUBLESHOOTING (Continued)

MK1 and MK2 w/SABRE or CUMMINS

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

28. INDIVIDUAL LIGHTS INOPERATIVE.

Step 1. Inspect individual lamps.

a. Replace defective lamps (refer to paragraph 3-93 or 3-94 for anchor lamp or paragraph

3-95 or 3-96 for towing, steaming or navigational lamps).

Step 2. Test light switches

a. Replace defective switch panel unit 1 (refer to paragraph 3-50).

29. INSTRUMENT PANEL GAUGE INOPERATIVE.

(Water temperature, oil pressure)

Step 1. Test individual sending unit (refer to paragraph 3-153).

a. Replace defective sending unit (refer to paragraph 3-101).

Step 2. Inspect individual gages (refer to paragraph 3-47).

a. Replace individual gage (rfer to paragraph 3-47).

30. HORN ONLY FAILS TO OPERATE.

Step 1. Test for 24 vdc at horn connections.

a. Replace defective horn (refer to paragraph 3-55).

b. Replace defective switch panel unit 2 (refer to paragraph 3-51).

31. WINDSHIELD WIPERS OPERATE BUT DON'T CLEAN WINDSHIELD.

Step 1. Inspect windshield wiper blades.

a. Replace defective windshield wiper blades (refer to paragraph 3-11).

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