BENDIX ADF-T12B Maintenance Manual page 47

Automatic direction finder system
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M A I N T E N A N C E
P R A C T I C E S
D E T A I L S T E P S / W O R K I T E M S
K E Y
I T E M S
(b) Remove dust cover from servoamp-indicator
assembly.
(2) Remove front indicator bezel assembly (3) from mounting plate (20)
( a ) R e m o v e t h r e e s c r e w s a n d t h r e e w a s h e r s
( 1 5 ) a n d ( 1 6 ) , t h a t s e c u r e i n d i c a t o r b e z e l
assembly (3) to mounting plate (20).
(b) Pull indicator bezel assembly (3) away
from mounting plate (20).
Chassis assembly (14) will be
f r e e d f r o m i t s m o u n t i n g p l a c e .
(3) Remove glass assembly (5).
(a) Release retaining ring (6) and carefully
withdraw glass (5) and frame gasket (4)
and bezel (3).
( 4 ) R e m o v e p o i n t e r ( 8 ) .
Pointer (8) is press fitted on shaft
of motor (29) and may be removed
by using any suitable gear extracting
t o o l .
(a) Remove pointer from gear shaft (29) by
means of gear extracting tool.
(5) Remove dial (7).
Remove two screws (9) that secure dial
t o m o u n t i n g p l a t e ( 2 0 ) .
(a)
( b ) W i t h d r a w d i a l .
N O T E
Indicator bezel assembly (3), glass (5) pointer (8)
and dial (7) need not be removed from mounting
p l a t e ( 2 0 ) u n l e s s t h e y a r e d a m a g e d .
( 6 ) R e m o v e g e a r s ( 2 1 ) a n d ( 2 5 ) .
Remove gears carefully so as
not to damage teeth.
W i t h d r a w s p u r r e d u c t i o n g e a r ( 2 1 ) b y
removing washer (22), washer (23)
a n d r e t a i n i n g r i n g ( 2 4 ) .
(a)
(b)
Carefully withdraw reduction gear (21)
from mounting plate (20).
( c )
W i t h d r a w s p u r r e d u c t i o n g e a r ( 2 5 ) f r o m
mounting plate (20) by removing washer (26)
s p a c e r ( 2 7 ) a n d r e t a i n i n g r i n g ( 2 8 ) .
( 7 ) R e m o v e R - F R e s o l v e r ( 2 9 )
R e m o v e t w o s c r e w s ( 3 1 ) t w o w a s h e r s ( 3 2 )
a n d t w o m o u n t i n g c l a m p s ( 3 0 ) t h a t f a s t e n
r e s o l v e r t o m o u n t i n g p l a t e ( 2 0 ) .
( a )
( b )
Remove resolver (29) by first removing the
t w o s e t s c r e w s ( 3 4 ) f r o m g e a r ( 3 3 ) .
A p r i l 1 9 6 5
(Revised April 1967)
Page 125

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