TM 10-4610-310-14
UNIT MAINTENANCE
LIGHTWEIGHT WATER PURIFIER
TROUBLESHOOTING PROCEDURES
DIESEL ENGINE
General
The table lists the common malfunctions that you may find during the operation or maintenance of the
Lightweight Water Purifier (LWP) diesel engine used in the high-pressure pump module. You should perform the
tests/inspections and corrective actions in the order listed.
This manual cannot list all malfunctions that may occur, nor all tests or inspections and corrective actions. If a
malfunction is not listed or is not corrected by listed corrective actions, notify your supervisor.
MALFUNCTION
TEST / INSPECTION
CORRECTIVE ACTION
Ensure that the fuel is
Replace fuel
uncontaminated and free of water.
Adjust intake and exhaust valves.
Inspect valve clearances
Adjust injection timing (WP 0124
1. Engine will not or is difficult to
Improper fuel injection timing
start
Inspect fuel injector. Replace if
Unserviceable fuel injector
faulty. (WP 0124 00)
Inspect engine for low compression
Notify DS/GS maintenance
Inspect the oil level
Fill oil if necessary
Remove any obstruction that can
Ensure sufficient cooling air
impede cooling air
2. Engine shuts down undirected
If recoil starter is seized, inspect for
Pull the recoil starter.
bearing seizures.
Notify DS/GS maintenance
Inspect the throttle cable for proper
Reset the throttle cable, replace if
setting and loose or broken
faulty. WP 0099 00.
connection
3. Engine speed racing or irregular
Ensure that the fuel pump is
Realign governor lever. WP 0124
aligned with the governor lever.
Inspect governor assembly for
Notify DS/GS maintenance. WP
proper installation
4. Black or bluish-white exhaust
Follow procedures in step (1)
Follow procedures in step (1)
smoke
END OF WORK PACKAGE
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