Fuel system
75
Cooling system
General
The installer of the cooling system is responsible for
ensuring that the cooling system operates in accord-
ance with these installation instructions.
The cooling system must be dimensioned generously
enough to ensure that fouling and repainting do not
adversely affect its cooling performance even after a
long period of service.
Use genuine Volvo Penta accessories and spare
parts wherever possible. Make sure that parts not
supplied by Volvo Penta do not restrict or reduce
pressures and flow in the engine. Lines with an ex-
cessively small bore, unsuitable routing, incorrect
connections etc will cause restrictions and lead to
abnormal engine temperatures.
The pipe and hose diameters stated in these instal-
lation instructions are to be treated as recommenda-
tions. The only way to tell whether an installation is
correct is to check pressures, temperatures and flows
with the engine running. In case of doubt, contact the
Volvo Penta organisation.
To reduce corrosion to a miniumum, use the correct
combinations of materials in pipes, valves etc. plus a
correctly sized and pressurized expansion tank.
Electrolytic corrosion may occur when two different
materials surfaces are close and connected via water
or moisture.
When the engine is connected to an external cooling
system, such as a central cooling system, keel cool-
ing or a radiator, the pH of the coolant is extremely
important in order to protect the various materials in
the cooling system.
Always use Volvo Penta coolant in a mixture of anti-
freeze or anti-rust agent. The coolant used affects the
cooling performance of the engine.
NOTE! For more information about the cooling sys-
tem, see section
Coolant mixture
.
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