ARMY TM 9-2805-259-14
AIR FORCE TO 38G2-89-54
NAVY NAVFAC P-8-615-14E
D - Daily
H - Hours
S - Semiannually (500 Hours)
Item
Interval
Procedures
Item to be Inspected
No.
Spark Plug
1
Clean, inspect, and regap (para. 4-37).
High Tension Cables
2
Clean, inspect, and test (para. 4-36).
Inspect, adjust magneto contacts (para. 4-34).
Magneto Contacts
3
Fuel Filter
4
Service fuel filter (para. 4-13).
Inspect breather tube (para. 4-18), breather reed
Crankcase Ventilation
5
System
Air Cleaner
Service air cleaner daily in extreme heat, dusty, or
6
sandy conditions. Refer to para. 4-14.
15
Crankcase Oil
Drain and refill crankcase oil, service oil filter (para
7
Refer to LO 9-2805-259-12.
Wiring Harness
Inspect for burnt, cracked, frayed or other dam-
8
aged wiring (para. 4-52).
Section IV. UNIT
TROUBLESHOOTING
Page
Paragraph
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4-9. General. This section contains troubleshooting procedures to determine the probable cause of observed
equipment malfunctions. Tests or inspections are provided to isolate the faulty component and corrective actions are
provided to eliminate the malfunction.
4-10. Unit Troubleshooting Procedures. Refer to the symptom index to locate the troubleshooting proce-
dure for the observed malfunction. The table lists the common malfunctions that may occur during the operation or
maintenance of the engine. Perform the tests or inspections, and the recommended corrective action in the order listed
in the troubleshooting table. If the malfunction is corrected by a specific correction action, do not continue with the
remaining steps, if any, of the troubleshooting procedure, if the malfunction is not corrected by the listed corrective
actions notify your supervisor and direct support maintenance.
SYMPTOM INDEX
Page
Symptom
Engine fails to start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Engine starts but fails to keep running . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Engine misses or runs erratically . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Engine surges or over speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Engine overheats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Engine oil consumption excessive.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Engine lacks power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Change 2 4 - 3
