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 MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 7. Check if the raw water line is clogged at sea chest.
Blow out sea chest with compressed air.
8. LACK OF OIL PRESSURE.
Step 1. Check for worn lubricating oil pump.
Replace pump (para 3-22).
Step 2. Check lubricating oil lines for thick, or slow flow.
See lubrication order for correct oil (LO 55-1925-204-12/2).
Step 3. Check for worn bearings.
Adjust bearing clearance (paras 3-7 and 3-24).
Step 4. Check for faulty lubrication oil pressure relief valve.
Replace valve (para 3-22).
9. ENGINE FAILS TO START AT TEMPERATURE ABOVE 32F.
Step 1 Check for closed fuel shutoff valve.
Open valve (fig. 2-9).
Step 2. Check if fuel oil day tank is empty.
Fill day tank and prime system.
Step 3. Check for low engine starting air pressure.
Pump up starting air to 250 psi.
Step 4. Check for fuel oil system airbound.
Prime system.
Step 5. Check for tripped overspeed governor.
Reset overspeed trip (para. 3-8).
10. UNEVEN RUNNING AND EXCESSIVE VIBRATION.
Step 1. Check for incorrectly balanced fuel supply to cylinders.
Inspect the position of injection pump control racks.
Step 2. Check for governor surge.
Replace broken or weak springs. (paras. 3-13).
Step 3 Check for air in fuel lines.
Prime fuel system.
02 GROUP-PROPELLER, SHAFT AND STUFFING BOX.
1. VIBRATION IN STERN AREA WHEN TUG IS OPERATING.
Step 1 Check for fouled or damaged propeller.
Remove items fouling propeller. Report damage to Gen. Sup. Maint.
Step 2. Check for bent shaft.
Report damage to general support maintenance.
2. LEAK AROUND SHAFT
Step 1. Check for loose or worn packing.
Adjust packing (para 3-26).
03 GROUP-WINDOW WIPER
1. VWIPER BLADE STREAKS GLASS WHEN WIPING.
Step 1. Check if blade is dirty or oily
Clean blade.
Step 2. Check if blade is hard or glazed.
Sandpaper clean edge with fine sandpaper, or replace with new blade (para 3-28).
2. ICE FORMS ON 'WINDOW.
Step 1 Check freezing temperature.
Saturate felt blade with a mixture of Glycol and fill reservoir.
3 SAI,T DEPOSITS ON WUINDOMW.
Step 1. Check salt spray.
In nonfreezing weather. fill reservoir of felt blade with fresh water. in freezing weather use solution of water
and glycol.
4. IMOTOR DOES NOT OPERATE
See troubleshooting motors in group 04.
04 GROUP-AUXILIARY SET AND RELATED SYSTEMS
(DIESEL ENGINE. DC GENERATORS. DC MOTORS. BATTERIES. ETC}
1. ENGINE STOPS SUDDENLY OR STALLS FREQUENTLY.
Step 1. Check fuel system for prime.
Loosen high-pressure line fitting. if no fuel is flowing, prime fuel system.
Step 2. Check for insufficient fuel.
See that there is fuel in the day tank and shutoff valve is open (fig. 2-9).
Step 3. Check for restriction in fuel flow.
Check lines for obstruction or breaks.
Step 4. Check for faulty transfer pump.
Replace transfer pump (para 5-14).
3-12
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