Install Air Filter And Connect Hoses; Bleeding Of Cooling System - Volvo D 20 Service Manual

Group 21 Engine
H34
lnstall air Iilter and connect hoses
A ( o w o n i n l e t h o s e m u s t p o i n t t o w a r d s i n l e t m a n i f o l d
otherwise the crankcase breather hose may contact
Cylinder head, installing
branch pipe. Use new gaskets.
H35
Connectl
- s p l a s h g u a r d
H36
Bleeding ot cooling system
Disconnect upper hose from cold start device. Place
drip pan beneath hose and hold hose leve with top
edge of expansion tank.
D
C o o l a n t
S i n c e a l u r n i n i u m i s u s e d i n t h e e n g i n e s , a c t i v e c o r r o
s i o n p r o t e c t i o n i s n e c e s s a r y i n t h e c o o a n i h e l p p r e v e n l
U s e g e n u i n e V o l v o b u e - g r e e n c o o l a n l t y p e C , d i l u t (
with clean water in propoltions of 50/50.
T h i s m i x t u r e h e l p s t o p r e v e n t c o r r o s i o n a n d f i c
a N e v e r f i l l t h e c o o i n g s y s t e m w i t h w a t e r a l o n e -
a T h e c o o l a n l s h o u l d b e c h a n g e d r e g u r a , l y s r n c e t h
c o r r o s i o n p r o t e c t i v e a d d i t i v e s i n t h e c o o l a n t l o s
t h e i r e f f e c t i n l i m e .
N o t e ! D o n o t r u n e n 9 i n e w h e n l e v e l o f c o o l a n t i s
l o w . H i g h l o c a t e m p e r a t ! r e s c a n r e s u l i w h i c h
m a y c a u s e l h e c y l i n d e r h e a d t o c r a c k .