Volvo D 20 Service Manual page 53

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Group 21 Engine
I n s t a l l h o l d e r 5 l 9 4 a n d d i a l i n d i c a t o r ( r a n s e 0 3 m m ) .
S e t g a u g e t o a p p r o x . 2 m m .
T u r n p u m p g e a r c l o c k w i s e u n t i l m a r k o n g e a r a n d
m o u n t i n g b r a c k e t c o i n c i d e .
T h e n t u r n p u m p g e a r b a c k s l i g h t l y u n l i l m i n r e a d i n g
r e g i s t e r s o n d i a l i n c i i c a t o r .
S e t i n d i c a t o r t o z e r o .
T u r n p u m p g e a r c l o c k w i s e u n t i l m a r k o n g e a r a n d p u m p
m o u n t i n g b r a c k e t c o i n c i d e . L o c k g e a r i n t h i s p o s i t i o n
w i t h s t o p 5 1 9 3 . ( l n s e f t s t o p t h r o u g h p u m p g e a r i n t o
Set dial indicator zero. Lock
injection using stop 5193
U n s c r e w a n d r e n r o v e p l u g f r o m
Cylinder head. installing
H 1 9
pump gear at cyl. I
injection pump disrri
i;;$d
H2A
Install camshaft rear sprocket and belt
Tlghten center bolt by hand, but it should still be possi
b e to turn sprocket on camshaft.
H 2 1
Set belt tension
A d j u s t l e n s i o n b y r n o v i n g p u m p .
U s e g a u g e 5 1 9 7 t o c h e c k t e n s i o n . A t t a c h g a u g e t o b e t
a n d s e t t o 1 2 . 5 u n i t s . S t r e t c h b e l t u n t i l m a r k o n g a u g e
p l u n g e r i s f l u s h w i t h s l e e v e . D e p r e s s b e t s t r o n g y w i t h
h a n d a n d r e c h e c k / a d j u s t t e n s i o n .
5 l