Item
No.
3
4
5
6
7
TM 10-4320-318-14
Table 4-1. Unit Preventive Maintenance Checks and Services - (Cont)
Interval
Semi-Annual
Hourly
Hourly
Hourly
Hourly
Location
Item To Check/
Service
Engine
Engine Cooling
System
Fuel Filters
Engine Oil
Engine Valve
Clearance
Procedure
Check for damage or leaks.
Tighten loose mounting hardware.
If engine is damaged or leaking,
notify supervisor
Every 125 hours of operation for
accumulation of dirt on inside of
flywheen fan cylinder cooling fins.
Clean any accumulation.
Change fuel filter after every 500
hours of operation (para. 4-23).
Change engine oil after first 50
hours of operation for new or
overhauled engines. Change en-
gine oil every 150 hours thereaf-
ter (LO 10-4320-318-12)
Check valve clearance after ev-
ery 150 hours of operation. Ad-
just as requried (para. 4-30).
Not Fully Mission
Capable If:
Loose or damaged
mounting hardware,
Class III leaks.
Dirt on cooling fins and
flywheel fan.
Hours are exceeded.
Hours are exceeded.
Section V. UNIT TROUBLESHOOTING PROCEDURES
4-14. Unit Troubleshooting Procedures. Unit troubleshooting procedures listed in Table 4-2 cover the most
common malfunctions that may be repaired at the unit level. Repair or adjustment requiring specialized equipment
is not authorized unless such equipment is available. Troubleshooting procedures used by the operator should be
conducted in addition to the unit troubleshooting procedures. This manual cannot list all the possible malfunctions
or every possible test/inspection and corrective action.
If a malfunction is not listed or corrected by a listed
corrective action, notify your supervisor.
SYMPTOM
Troubleshooting
Procedure
(Para)
Engine Does Not Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Engine Is Hard To Turn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Black Smoke From Exhaust (Engine May Lack Power, Indicated by Dropping Speed . . . . . . . . . . . . . . . . . . 3
Engine Lacks Power (No Smoke From Exhaust) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Engine Stops Suddenly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pump Discharge Line Shows Low or No Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4-5
