Volvo D24 - Page 71

Group 21 Engine
Timing
gear
belts,
replacement
Bleeding
ot cooling system
Disconnect
upper hose from
cold
drip
pan
beneath hose
6nd hold
edge
of expansion tank.
stan d€vice. Place
hose level with top
Coolant
Since aluminium is used in the engines, active corro'
sion
protection
is necessary in
the coolant to
help
pre-
vent
corrosion d6mage,
Use
genuine
Volvo blue-green coolant type C, diluted
with clean water in
proportions
of 50/50.
This mixture helps to
prevent
coiiosion and
frost
Never
fill the
cooling system with
water alone.
The
coolant
should be changed
regularly since the
cor
rosion
protective
additives
in the cootant
tose their ef-
Notel Do not run
engine when ievelofcoolant is
low
since high local temperatures can result
which mav cause the
cvlinder
head
to crack.
Replacing
coolant
Always use
typc C blue-green coolanr. Remember
to
replace
decal
1PlN
1331473-7)
on expansion tank if ne,
Type C blue-green coolant
All diesel
and
petrol
(gasoline)
engines
manufactured
since 1982 are filled with tvDe C coolant.
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