Volvo D24 - Page 103

Group 21 Engine
Crcnkshaft front seal.
reDlacement
Bleeding ot cooling system
Disconnect upper hose from cold
start
drip
pan
beneath hose and hold hose
edge of expansion
tank,
820
Note! Oo not run
engine when
levetof coolant
is
low,
since high local
temperarures
can resutr
which
may cause
the cylinder head
ro crack.
Coolant
Since
aluminium is used in the
engines, acrive
cor.o-
sion
protection
is
necessary in the coolant
to help
pre-
vent corrosion
damage,
Use
genuine
Volvo blue-green
coolant type C. diluted
with
clean water in
proportions
of 50/50.
This
mixture helps
to
prevent
corrosion
and frosr
damage.
Never
fill the cooling system with water
alone.
The coolant should be changed regularly since the
cor-
rosion
protective
additives
in
the coolant
lose
their ef
fect
in time.
Replacing
coolant
Always use type
C
blue-green
coolant. Remember to
replace decal
{P/N
1331473-7) on expansion tank if ne-
Type
C blue-green coolant
All
diesel and
petrol
(gasoline)engines
manufactufed
since 1982 are filled with type C coolant.
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101