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15
COOLING SYSTEM
15.1
Cooling system
The water pump
The pressure in the cooling system resulting from heat is regulated by a valve in the radia-
tor cap
. The heat expansion causes the surplus coolant to flow into the compensating
tank
. When the temperature falls, this surplus coolant is sucked back into the cooling
system. This permits the specified coolant temperature without causing any malfunctions.
125 °C (257 °F)
102013-10
Cooling takes place by means of the air stream and a radiator fan
by a thermoswitch.
The lower the speed, the less the cooling effect. Dirty cooling fins also reduce the cooling
effect.
400407-10
in the engine forces the coolant to flow.
137
, which is controlled
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