I t e m
N o .
I n t e r v a l
D
S
H
1
2
3
4
5
6
7
8
A R M Y T M 9 – 2 8 0 5 - 2 5 8 - 1 4
A I R F O R C E T O 3 8 G 2 - 8 9 - 21
N A V Y N A V F A C P – 8 - 6 1 4 - 1 4 E
T a b l e
4 - 1 .
U n i t
P r e v e n t i v e
M a i n t e n a n c e
C h e c k s
a n d
S e r v i c e s
( P M C S ).
D – Daily
•
•
•
•
•
•
15
•
P a r a g r a ph
4 - 9
G e n e r al
S – Semiannually
I t e m t o b e I n s p e c t e d
S p a r k P l ug
H i g h T e n s i o n C a b l es
M a g n e t o C o n t a c ts
F u e l F i l t er
C r a n k c a s e V e n t i l a t i on
S y s t e m
A i r C l e a n er
C r a n k c a s e O i l
W i r i n g H a r n e ss
( 5 0 0 H o u r s )
H – H o u rs
P r o c e d u r e s
C l e a n , i n s p e c t , a n d r e g a p ( p a r a . 4 - 3 8 ).
C l e a n , i n s p e c t , a n d t e s t ( p a r a . 4 - 3 7 ) .
I n s p e c t , a d j u s t m a g n e t o c o n t a c t s ( p a r a . 4 – 3 4 ).
S e r v i c e f u e l f i l t e r ( p a r a . 4 - 1 3 ) .
I n s p e c t b r e a t h e r t u b e ( p a r a . 4 - 1 8 ) , b r e a t h e r r e e d
( p a r a . 4 - 5 5 ) , a n d c r a n k c a s e b r e a t h e r ( p a r a . 4 - 2 7)
a n d c l e a n a s n e e d e d .
Service air cleaner daily in extreme heat, dusty, or
s a n d y c o n d i t i o n s . R e f e r t o p a r a . 4 – 1 4 .
Drain and refill crankcase oil, service oil filter (para
4 – 1 9 ) i n e x t r e m e h e a t , d u s t y , o r s a n d y c o n d i t i o n s.
R e f e r t o L O 5 – 2 8 0 5 – 2 5 8 – 1 2 .
I n s p e c t f o r b u r n t , c r a c k e d , f r a y e d o r o t h e r d a m a g e
( p a r a . 4 - 5 3 ) .
Section IV. UNIT TROUBLESHOOTING
P a g e
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 3
4 - 1 0
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..4–3
4 - 9 . G e n e r a l . T h i s s e c t i o n c o n t a i n s t r o u b l e s h o o t i n g p r o c e d u r e s t o d e t e r m i n e t h e p r o b a b l e c a u s e o f o b s e r v e d
e q u i p m e n t m a l f u n c t i o n s . T e s t s o r i n s p e c t i o n s a r e p r o v i d e d t o i s o l a t e t h e f a u l t y c o m p o n e n t a n d c o r r e c t i v e a c t i o ns
a r e p r o v i d e d t o e l i m i n a t e t h e m a l f u n c t i o n.
4-10. Unit Troubleshooting Procedures.
R e f e r t o t h e s y m p t o m i n d e x t o l o c a t e t h e t r o u b l e s h o o t i n g
p r o c e d u r e f o r t h e o b s e r v e d m a l f u n c t i o n . T h e t a b l e l i s t s t h e c o m m o n m a l f u n c t i o n s t h a t m a y o c c u r d u r i n g t h e
operation or maintenance of the engine. Perform the tests of 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
b y t h e l i s t e d c o r r e c t i v e a c t i o n s n o t i f y y o u r s u p e r v i s o r a n d D i r e c t S u p p o r t M a i n t e n a n c e.
S Y M P T O M I N D E X
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..4–5
Engine surges or overspeeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..4–6
Engine overheats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..4–6
4 - 3
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