TM 9-2350-238-34-1
2 - 3 9 . M A I N T E N A N C E O F A U X I L I A R Y D R I V E A S S E M B L Y ( C O N T ) .
R E A S S E M B L Y ( C O N T )
5
6
7
8
9
1
0
Install two new shims (7) and new preformed packing (8) on clutch drive (9).
Install clutch drive (9) into input drive (4) and secure with three evenly spaced jacking screws.
R e m o v e p l u g ( 1 0 ) . I n s e r t b e a r i n g g a g e t h r o u g h h o l e a n d b e t w e e n l a r g e e n d o f o u t p u t g e ar
teeth while rotating gears by hand. Reverse rotation and remove bearing gage after it has
t r a v e l e d t h r o u g h o n e t o o t h . I n s t a l l p l u g.
M e a s u r e f l a t t e n e d p o r t i o n o f b e a r i n g g a g e t o d e t e r m i n e b a c k l a s h m e a s u r e m e n t . B a c k l a sh
should measure 0.005 to 0.006 in. (0.013 to 0.015 cm).
If backlash is not correct, remove clutch drive (9) and increase or decrease number of shims
(7) .
N O T E
Approximately 0.001 in. (0.003 cm) backlash change requires 0.0016 in. (0.0041 cm)
s h i m c h a n g e ( o n e l a m i n a t i o n ).
Repeat steps 6 thru 9 until proper backlash is obtained.
2 - 98