Table 4-2. Troubleshooting (Cont)

T M 5 - 6 1 1 5 - 5 8 5 - 1 2 N A V F A C P - 8 - 6 2 3 - 12 T O - 3 5 C 2 - 3 - 4 5 5 -1 T M - 0 5 6 8 4 C / 0 5 6 8 5 B - 1 2 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 9. ENGINE SHUTS DOWN. S t e p 1 . C h e c k o i l l e v e l ( p a r a g r a p h 4 - 5 1 ). Add proper grade of oil. S t e p 2 . C h e c k f o r r e s t r i c t e d a i r c o o l i n g s y s t e m ( p a r a g r a p h 4 - 4 1 ). C l e a n r e s t r i c t i o n s f r o m s y s t e m . S t e p 3 . C h e c k f o r o v e r l o a d o n g e n e r a t o r . Keep generator load within set capability. S t e p 4 . C h e c k l o w o i l p r e s s u r e s w i t c h ( p a r a g r a p h 4 - 3 1 ). Replace a bad switch. S t e p 5 . C h e c k t h e r m o o v e r h e a t s w i t c h ( p a r a g r a p h 4 - 1 7 c ) . Replace a bad switch. 10. ENGINE VIBRATES. Step 1. Engine mounts loose or bad (paragraph 4-52). T i g h t e n m o u n t i n g o r r e p l a c e a s n e c e s s a r y. Step 2. Check for loose blower wheel. T i g h t e n b l o w e r w h e e l. S t e p 3 . C h e c k v a l v e c l e a r a n c e ( p a r a g r a p h 4 - 4 6 ). R e s e t v a l v e c l e a r a n c e. 11. LOW GENERATOR OUTPUT VOLTAGE (NO LOAD). S t e p 1 . L o w e n g i n e s p e e d. S e t e n g i n e s p e e d t o a c h i e v e n o - l o a d f r e q u e n c y ( p a r a g r a p h 1 - 1 0 . b . ). Step 2. Check voltage adjust rheostat (R1) setting (paragraph 4-38). Set rheostat (R1) for proper output voltage. 12. HIGH GENERATOR OUTPUT VOLTAGE (NO LOAD). S t e p 1 . C h e c k v o l t a g e a d j u s t r h e o s t a t ( R 1 ) s e t t i n g ( p a r a g r a p h 4 - 3 8 ). Set rheostat (R1) for proper output voltage. 13. AC CIRCUIT BREAKER (CB1) WILL NOT CLOSE. S t e p 1 . C h e c k f o r s h o r t c i r c u i t l o a d . R e m o v e s h o r t c i r c u i t . Change 2 4-9