caution
TM 9-2350-238-34-1
1 1 C l e a n a n y r e m a i n i n g o i l f r o m o u t p u t g e a r
t e e t h a n d a p p l y g r e a s e o r w h i t e e n a m el
on four or five teeth. Use input shaft
opening in input drive for access.
1 2 T u r n s h a f t c o u n t e r c l o c k w i s e a n d r o t a te
o u t p u t g e a r s a t l e a s t o n e c o m p l e te
r e v o l u t i o n .
1 3 R e m o v e t h r e e j a c k i n g s c r e w s a n d c l u t ch
drive (9) .
1 4 E x a m i n e o u t p u t g e a r m a t c h i n g g e a r t e e th
a n d d e t e r m i n e g e a r t o o t h w e a r p a t t e r n . If
backlash is correct (fig. 2-1), the gear
tooth bearing contact area shall be equal
in length and centered on tooth face within
10 percent of length and width. The
contact area should be 0.3 to 0.7 in. (7. 6
t o 1 7 . 8 m m ).
Contact areas extending to either end
of the teeth are not acceptable.
1 5 R e p e a t s t e p s 5 t h r u 1 3 i f w e a r p a t t e r n is
not correct (fig. 2-2 and 2-3). If wear
p a t t e r n c a n n o t b e r e a c h e d t h r o u g h p r o p er
s h i m m i n g , r e p a i r g e n e r a t o r d r i v e (p
2 - 1 1 6 ).
2 - 99