ENGINE FAILS TO STOP WHEN SHUT OFF

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BOAT VIBRATION FELT WHILE UNDER WAY

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

Section V. MAINTENANCE PROCEDURES

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

38. ENGINE FAILS TO STOP WHEN SHUT OFF.

Step 1. Inspect engine stop cable.

a. Replace defective engine stop cable (refer to paragraph 3-41).

39. ENGINE STARTS BUT FAILS TO KEEP RUNNING.

Step 1. Inspect operation of fuel lift pump assembly.

a. Replace fuel lift pump assembly (refer to paragraph 3-63).

40. WATER TEMPERATURE GAUGE NOT REGISTERING ALTHOUGH GAUGE IS OPERATIVE.

Step 1. Check operation of water temperature sending unit.

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

41. OIL PRESSURE GAUGE NOT REGISTERING ALTHOUGH GAUGE IS OPERATIVE.

Step 1. Check operation of oil temperature sending unit.

a. Replace oil temperature sending unit (rfer to paragraph 3-101).

42. LAMPS NOT OPERATING.

Step 1. Check lamp sockets for corrosion.

a. If corrosion present remove corrosion.

b. If corrosion not present go to Step 2.

Step 2. Check spring action of lamp socket terminals.

a. If terminals defective replace lamp sockets (refer to paragraphs 3-95 and 3-96).

43. NO POWER ON BOAT ALTHOUGH BATTERIES ARE GOOD.

Step 1. Check master battery switch.

a. Replace defective master switch (refer to paragraph 3-100).

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