(b) Tag and remove the leads from theBATTERY CHG AMMETER.3 - 1 2 8 . P a n e l L i g h t A s s e m b l y .See (9, fig. 3-18) and proceed as follows:( c) Remove the three screws (75) and nuts(76) which secure the BATTERY CHG AMMETER( 7 7 ) a n d r e m o v e m e t e r.a .R e p l a c e m e n t . R e p l a c e p a n e l l i g h t a s s e m b l i esas follows:( 2 ) I n s t a l l a t i o n .Install BATTERY CHGA M M E T E R ( 7 7 ) u s i n g r e m o v a l s t e p s i n r e v e r s eo r d e r.R e m o v e t a g s.( 1 ) R e m o v a l .( a )T a g l e a d s a n d r e m o v e s c r e w s w h i c hs e c u r e l e a d s t o p a n e l l i g h t a s s e m b l y .3 - 1 2 5 . D C C o n t r o l C i r c u i t B r e a k e r .( b )Remove panel light assembly mountingh a r d w a r e a n d r e m o v e p a n e l l i g h t a s s e m b l y.T e s t a n d r e p l a c e m e n t i n s t r u c t i o n s f o r D C c i r c u itb r e a k e r a r e c o n t a i n e d i n p a r a g r a p h 3 - 1 0 0 .b .I n s t a l l a t i o n . I n s t a l l p a n e l l i g h t a s s e m b l yu s i n g r e m o v a l s t e p s i n r e v e r s e o r d e r . R e m o v e t a g s.3 - 1 2 6 . C o n t r o l B o x R e l a y A s s e m b l y.3 - 1 2 9 . P r e s s - t o - T e s t L i g h t A s s e m b l y R e p l a c e m e n t .See (99, fig. 3-18) and proceed as follows:a .R e m o v a l . S e e ( 2 5 , 3 2 , 1 2 4 , f i g . 3 - 1 8 ) a n dp r o c e e d a s f o l l o wsa .I n s p e c t i o n . V i s u a l l y i n s p e c t f o r d a m a g e dc o m p o n e n t s .(1) Tag leads and unsolder leads to lighta s s e m b l y .( b ). R e p l a c e m e n t.( 1 ) R e m o v a l .( 2 ) R e m o v e l i g h t a s s e m b l y m o u n t i n g h a r d w a r ea n d r e m o v e l i g h t a s s e m b l y .( a )Gain access to inside of control box(123).b .I n s t a l l a t i o n . I n s t a l l l i g h t a s s e m b l y u s i n g r e -m o v a l s t e p s i n r e v e r s e o r d e r . S o l d e r l e a d s t o l i g hta s s e m b l y . R e m o v e t a g s .( b ) Tag and remove the leads from relaya s s e m b l y ( 9 9 ).3 - 1 3 0 . S y n c h r o n i z i n g L i g h t s .( c) Remove the relay assembly (99) byremoving the four attaching nuts (98).See (16, fig. 3-18) and proceed as follows:( 2 ) I n s t a l l a t i o n . I n s t a l l r e l a y a s s e m b l y ( 9 9)u s i n g r e m o v a l s t e p s i n r e v e r s e o r d e r . R e m o v e t a g s .a . T e s t i n g .—(1) Gain access to the rear of the controlcubicle panel (96).3 - 1 2 7 . T e r m i n a l B o a r d A s s e m b l y .See (105, fig. 3-18) and proceed as follows:N O T Ea .I n s p e c t i o n . V i s u a l l y i n s p e c t f o r b r o k e n b a r -r i e r s , l o o s e h a r d w a r e a n d o t h e r d a m a g e .M a k e c e r t a i n D C C O N T R OLCIRCUIT BREAKER is open.(2) Remove screw which secures lead to oneterminal of SYNCHRONIZING LIGHT assembly (16).b . R e p l a c e m e n t.—( 1 ) R e m o v a l.(3) With an ohmmeter, test lamp (24) forc o n t i n u i t y .If meter shows an open circuit, replacel a m p.( a) Gain access to inside of control box(123).( b )Tag and remove the leads from thet e r m i n a l b o a r d ( 1 0 5 ).( 4 ) R e c o n n e c t l e a d.b .R e p l a c e m e n t . R e p l a c e S Y N C H R O N I Z I N G L I G H Tassemblies (16) as follows:( 1 ) R e m o v a l.( c )Remove jumper (107) by removingscrews (106) and note location of jumper.( d )Remove the four screws (103) andnuts (104) and remove terminal board (105).( a )T a g l e a d s a n d r e m o v e s c r e w s w h i c hs e c u r e l e a d s t o l i g h t a s s e m b l y.( b )R e m o v e l i g h t a s s e m b l y m o u n t i n g h a r d w a r ea n d r e m o v e l i g h t a s s e m b l y.( 2 ) I n s t a l l a t i o n . I n s t a l l t e r m i n a l b o a r d ( 1 0 5)a s s e m b l y u s i n g r e m o v a l s t e p s i n r e v e r s e o r d e r . R e-m o v e t a g s . M a k e c e r t a i n t o r e p l a c e j u m p e r ( 1 0 7)a c r o s s s a m e t e r m i n a l s i n r e m o v a l p r o c e d u r e s.3-46
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