T M 5 - 6 1 1 5 - 5 8 5 - 1 2
N A V F A C P - 8 - 2 6 2 - 12
T O - 3 5 C 2 - 3 - 4 5 5 - 1
T M - 0 5 6 8 4 C - 12
T a b l e 4 - 2 . T r o u b l e s h o o t i n g ( C o n t)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
14. BATTERIES DO NOT RETAIN CHARGE.
Step 1. Check for blown alternator protection fuse (F1) (paragraph 4-27).
R e p l a c e f u s e.
S t e p 2 . C h e c k f o r b a d b a t t e r y o r b a t t e r i e s ( p a r a g r a p h 4 - 2 5 ).
R e p l a c e d e f e c t i v e b a t t e r y.
Section VII. RADIO INTERFERENCE SUPPRESSION
4 - 1 4 . G E N E R A L M E T H O D S F O R P R O P E R S U P -
PRESSION.
Essentially, suppression is attained by providing a low
r e s i s t a n c e p a t h t o g r o u n d f o r s t r a y c u r r e n t s . T he
methods used include shielding the ignition and high-
f r e q u e n c y w i r e s , g r o u n d i n g t h e f r a m e w i t h b o n d i n g
s t r a p s , a n d u s i n g f i l t e r i n g s y s t e m s.
4-15. R A D I O I N T E R F E R E N C E S U P P R E S S I O N C O M-
P O N E N T S.
a . P r i m a r y S u p p r e s s i o n C o m p o n e n t s . T h e p r i m a ry
s u p p r e s s i o n c o m p o n e n t s a r e t h o s e w h o s e p r i m a ry
f u n c t i o n i t i s t o s u p r e s s r a d i o i n t e r f e r e n c e . T h e p r i-
m a r y s u p p r e s s i o n c o m p o n e n t s a r e s h o w n i n f i g u r e
4 - 3.
b . S e c o n d a r y S u p p r e s s i o n C o m p o n e n t s . T h e s e c o m -
p o n e n t s h a v e r a d i o i n t e r f e r e n c e s u p p r e s s i o n f u n c t i o n s
w h i c h a r e i n c i d e n t a l o r s e c o n d a r y t o t h e i r p r i m a ry
f u n c t i o n . T h e y a r e t h e i n t e r n a l - e x t e r n a l t o o t h l o c k-
w a s h e r s o n t h e f u e l p u m p s a n d b a t t e r y c h a r g i n g r e g -
u l a t o r - r e c t i f i e r.
4 - 10
