Section V. TROUBLESHOOTING - TM-10-3930-242-120052

TM10-3930-242-12

Section V. TROUBLESHOOTING

actions to be taken. Perform the tests/inspections

4-9. General

and corrective actions in the order listed.

This section contains troubleshooting information

for locating and correcting most of the malfunctions

4-10. Limitation

which may occur in the 6,000 pound rough terrain

This manual cannot list all malfunctions that may

forklift truck, Army Models MHE 200, MHE 202,

occur, nor all tests or inspections and corrective

and MHE 222. Each malfunction for an individual

actions. Notify your supervisor when malfunctions

component, unit, or system is followed by a list of

occur that are not covered in troubleshooting table

tests or inspections. The tests and inspections will

4-2.

help to determine probable causes and corrective

Table 4-2. Organizational Troubleshooting

Malfunction

Test or inspection

Corrective action

1. ENGINE WILL NOT CRANK

Step 1. Inspect battery connections for poor contact. Clean contact surfaces of battery connections and reinstall serviceable

cables. Replace cables that are damaged beyond repair,

Step 2. Using a hydrometer, test the specific gravity of the electrolyte. A reading of 1.220 or lower indicates that the battery

is less than half charged. If electrolyte is too low to test, add distilled water and charge batteries for one hour before

checking hydrometer readings.

If battery does not accept charge, replace (para 4-34).

Step 3. Inspect starter for defective wiring.

Replace starter (para 4-37).

WARNING

If NBC exposure is suspected, all air filter media should be handled

by personnel wearing protective equipment. Consult your unit NBC

officer or NBC NCO) for appropriate handling or disposal procedures.

2. ENGINE CRANKS, BUT FAILS TO START

Step 1. heck to be sure engine strut off is pushed down and that cable is actuating the governor control.

Step 2. Check to be sure emergency shut-off is in start position.

Step 3. Check the fuel tank for fuel and fuel filters for contamination.

Refuel and/or replace filters as necessary (para 4-22).

Step 4. Inspect air cleaner for obstruction.

Clean if required (para 4-20).

3. ENGINE OPERATES ERRATICALLY

Step 1. Check to be sure fuel filters are not obstructing flow.

Clean if required (para 4-22).

Step 2. Check air cleaner for restriction.

Clean if required (para 4-201.

Step 3. Notify supervisor and direct support to check governor and fuel rack.

4. ENGINE LACKS POWER

Step 1. Inspect throttle linkage for damage, excessive wear, and limited movement.

Adjust serviceable linkage. Replace damaged or excessively worn linkage.

Step 2. Inspect air cleaner for damage or obstruction.

Replace damaged air cleaner or faulty air cleaner hoses (para 4-20).

Step 3. Notify supervisor and direct support maintenance to check governor and fuel rack.

5. ENGINE OVERHEATS

Step 1. Check radiator fins for free air flow.

Clean if required.

Step 2. Inspect for loose, damaged, or broken fan belts.

Adjust loose fan belts. Replace unserviceable belts (para 4-28).

Step 3. Inspect for poor coolant circulation.

Replace faulty hoses, clamps (para 4-26) and thermostats (para 4-24).

Check water pump and replace if faulty (para 4-25).

6. EXCESSIVE LUBRICATING OIL CONSUMPTION

Step 1. Inspect engine compartment for evidence of oil leakage.

Replace defective or worn hoses, tubing, fittings, and gaskets.

7. TRANSMISSION AN TORQUE CONVERTER OVERHEATS

Step 1. Inspect for low transmission oil level.

Service transmission IAW LO 10-3930-242-12-1.

Step 2. Check for loss of oil due to defective hose assemblies.

Replace hose assemblies (para 4-77).

4-4

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