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D i st r i b u to r, reco n d it i o n i ng
lgnition system with contact breaker assemblY
D. Testing distributor on a test bench
R e f e r t o t h e m a n u f a c t u r e r ' s i n s t r u c t i o n s a t a L t i m e s
w h e n t e s t i n g d i s t r i b l t o r s o n a t e s t b e n c h
T h e n u m b e r o n t h e s i d e o f t h e d l s t r i b u t o r i s t h e B o s c h
D 1
checking dwell angle
Conditionr New contact breaker po nls
Run distributor at 3.5-4.2 revs/sec (200-250 r/m n)
Adjust dwell angle to 59-65'. (ll is advisable to set dwell
angle to 59' as angle increases as cam wears )
Increase speed to 25 r/s (1 500 r/min).
Read off dwell anqle.
Dwell angle musl not varY bY more than 2'from pre_
Check distributor for wear, damage elc ii deviatlon is
I
I
t
T
rl)
0
D2
C h e c k i n g f i r i n g
R u n d i s t r i b u t o r a t 3 - 5 r e v s / s e c ( 2 0 0 - 3 0 0 , m i n ) o n t e s t
S e t d i s t r i b u t o r " 0 " t o p o s i t i o n w h i c h c o r r e s p o n d s l o
f i r i n g o i c y l i n d e r 1 .
F i r i n g s h o u l d b e 0 9 0 - 1 8 0 - 2 7 0 " -
C h e c k s h a p e o f a t r o w s ( o r e q u i v a l e n t s y m b o l d e p e n d
l f d e v i a t i o n i s m o r e t h a n 2 " l h i s i n d i c a l e s t h a t s i d e p l a Y i s
t o o l a r g e o r c a m i s w o r n .
D3
Checking mechanical advance
Run distribulor 3t 3.5 r/s (200 r/min) Ca ibrate meter'
lncrease speed and check that mechanicaLadvance
con_
forms to specification.
l f n o t , c h e c k t h a i b a l a n c e w e i g h t s a r e l u b n c a t e d a n d d o
Also check spranss.
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