Table 3-3. Troubleshooting-Operator/Crew

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SECTION III. TROUBLESHOOTING

TM-55-1905-217-12 Landing Craft Mechanized; Steel; DED; Overait Length 74 Feet Mod 1 Marl VIII Navy Design LCM-8 Hull Numbers 8500 and 8580 thru 8618 Manual

EXCESSIVE VIBRATION IN PROPELLER SHAFT.

TM 55-1905-217-12

3-6. Troubleshooting

NOTE

Refer to Table 34. This table provides troubleshooting

Before you use this table, be sure you have performed all

instructions at the operator/crew maintenance level.

applicable operating check

Table 3-3. Troubleshooting-Operator/Crew

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

ENGINE

1. ENGINE HARD TO START.

Step 1. Check the battery charge.

If charge is low, start inboard engine with hydraulic starter and start outboard engine by

engaging clutches. Check ammeters for charg e rate. Tighten any loose connections

Step 2 Check for loose connections or defective starting motor switch.

Tighten connection. Replace switch if necessary.

Step 3.Check lubricating oil used

Use proper oil as specified in lubrication order.

Step 4. Check for low fuel supply.

Refill fuel tank if empty or low.

Step 5. Check for loose connection or cracked lines between fuel pump and tonir

Tighten connection or replace lines

Step 6. Check that the Injector racks are in FULL FUEL position.

Inspect for binding governor to injector linkage that will prevent the governor from posi-

tioning the injector racks into the FULL FUEL position. Remove any bind found.

2. LACK OF POWER

Check for insufficient fuel

Recheck steps 5 and 6 (1) above.

3. DETONATION.

Check if oil is picked up by air stream.

(1) Clean the air box and drain tubes to prevent accumulations that may be picked up by the

air stream and enter the engine's cylinders.

(2) Inspect the blower oil seals by removing the air inlet housing and watching through the

blower inlet for oil radiating away from the blower rotor shaft oil seals while the engine is

running. If oil is passing through the seals, report to higher authority.

4. HIGH LUBRICATING OIL CONSUMPTION.

Step 1. Check for leaking oil lines or connections

Tighten as necessary. Report the defective parts to higher authority.

Step 2. Check for gasket or oil seal leak

Report defective gaskets or oil seals to higher authority.

5. LOW OIL PRESSURE.

Step 1. Check oil level In crankcase.

Add oil to proper level.

Step 2. Check viscosity of lubricating oil In crankcase.

Refer to lubrication order.

TORQMATIC MARINE GEAR

1. DRIVE SHAFT DOES NOT ROTATE.

Step 1. Check oil pressure

Fill to the FULL mark on the level gage

PROPELLER, PROPELLER SHAFT, AND STUFFING BOX.

1. EXCESSIVE LEAKAGE FROM STUFFING BOX.

Step 1. Check for loose or worn packing.

Adjust or replace packing (para 3-19).

2. EXCESSIVELY HOT STUFFING BOX.

Step ,1. Check if packing gland is too tight.

Adjust packing (para 3-19).

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