TM 9-2350-238-34-12 - 4 2 . 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 ER E A S S E M B L Y ( C O N T )2 4 R e i n s t a l l g e a r s e t s h o u l d e r e d s h a f t ( 1 3 ),bearing carrier shim (18), and drive gearb e a r i n g h o u s i n g ( 1 7 ) . S e c u r e d r i v e g e arb e a r i n g h o u s i n g w i t h t h r e e h e x a g o n h e adc a p s c r e w s ( 2 1 ) t i g h t e n e d t o e n s u reb e a r i n g h o u s i n g s e a t s c o m p l e t e l y ing e n e r a t o r d r i v e m e c h a n i c a l h o u s i n g ( 2 ).2 5 I n s e r t b e a r i n g g a g e b e t w e e n b e v e l g e arset spiral gear (12) and bevel gear setspiral pinion gear (23) teeth at large endo f t e e t h t o c h e c k g e a r b a c k l a s h . R o t a tegear set shouldered shaft (13) througho n e g e a r t o o t h a n d b e a r i n g g a g e.R e v e r s e r o t a t i o n a n d r e m o v e b e a r i ngg a g e.2 6 M e a s u r e t h i c k n e s s o f f l a t t e n e d p o r t i o n ofb 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 .Backlash must be 0.002 to 0.003 in.(0.005 to 0.008 cm).2 7 I f b a c k l a s h i s n o t c o r r e c t , t r a n s f e r s h i msfrom one bearing housing to the other.A S S E M B L Y ( G E N E R A T O R D R I V E ) ( C O N T ) .2 - 1 28
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