Set Dial Indicator Zero - Volvo D 20 Service Manual

Group 21 Engine
Camshaft front seal, replacement
o4
Turn engine until cyl. 1 is at TDC - iniection
A l w a y s u s e t h e v i b r a t i o n d ; m p e r c e n t e r b o l t i o t u r n t h e
e n g i n e . 2 7 m m s o c k e t o r w r e n c h 5 1 8 8 .
B o t h c y l i n d e r 1 c a m s s h o u l d p o i n ! o b l i q u e l y ' r p w a r d s .
T u r n e n g i n e a p p . o x . 1 / 4 t u r n c l o c k w i s e p a s t ' 0 ' a n d t h e n
b a c k t o ' 0 ' a g a i n , t o o b t a i n s l a c k p E d o f b e l i o n d r i v i n g
s i d e . l f t h i s i s n o t d o n e i n j e c l i o n p u m p s e t t i n s w i l b e
o5
Set dial indicator zero
G a u g e p o i n t e r m u s t n o t m o v e d u r i n g i n s t a l a t i o n o f
new oil sea otherwise it wil be necessary to basic-set
e n g i n e s i n c e c a m s h a f t w i l l h a v e m o v e d i n r e l a t i o n t o
Lf pointe. does not move itsufficesto check/adjust injec-
o6
Remove belt from camshaft sprocket
U n s c f e w e x p a n s i o n l a n k c a p t o r e l e a s e o v e r p r e s s u r e
f r o m c o o i n g s y s t e m .
S a c k e n c o o l a n t p u m p m o u n t i n g b o l t s a n d b e l t t e n -
s i o n e r . T i g h l e n t w o o w e r m o u n t i n g b o l t s 1 o a v o i d u n
n e c e s s a r y l o s s o f c o o l a n t .
R e m o v e b e l t f r o m c a m s h a f t s p r o c k e t .
o7
Remove camshaft lront sprocket
U s e 5 1 9 9 t o h o d s p r o c k e t i n p o s i t i o n w h e n l o o s e n i n g
b o t . M a k e s ! r e t h a t c a m s h a f t d o e s n o t r o r a r e
Tap sprocket to free it from carnshaft.
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{)il a
a2