A R M Y T M 9 - 2 8 0 5 - 2 5 6 - 1 4
A I R F O R C E T O 3 8 G 2 - 1 0 2 –2
N A V Y N A V F A C P - 8 4 1 - 1 4 E
Table 4– 1. Unit Preventive Maintenance Checks and Services (PMCS).
H - H o u r s
D – Daily
S – S e m i a n n u a l ( 5 0 0 h o u r s )
I t e m
I n t e r v a l
N o .
I t e m t o b e i n s p e c t e d
P r o c e d u r e s
H
D
S
1
l
Spark Plug
Clean, inspect, and regap. Refer to para. 4–19.
2
l
High Tension Cable
Inspect and test high tension cable (para. 4–18).
3
l
Breaker Points and
Inspect, adjust breaker points. Refer to para. 4–30.
C o n d e n s er
4
l
Fuel Filter
Service fuel filter. Refer to para. 4-13.
5
l
Crankcase Ventilation
Remove, clean, and inspect relief valve. Refer to para.
S y s t em
4–24. Remove, clean, and inspect breather line.
Refer to para. 4 – 3 2 .
6
l
Air Cleaner
Service air cleaner daily in extreme heat, dusty or sandy
conditions. Refer to para. 4-20 and 4–21.
7
15
Crankcase Oil
Drain and refill crankcase oil in extreme heat, dusty or
sandy conditions. Refer to LO 9–2805–256–12.
Section IV. UNIT TROUBLESHOOTING
Paragraph
P a ge
4 - 9
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..4–3
4 - 10
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 procedure
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 corrective 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.
S Y M P T O M I N D EX
S y m p t o m
P a ge
Engine fails to start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-4
Engine starts but fails to keep running . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ., . . . . . . . . . . . . . . . . . . . . ..4–5
Engine misses or runs erratically . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..4–6
Engine surges or overspeeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-6
Engine overheats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..4–6
C h a n g e 1 4 - 3
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