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MAINTENANCE WORK ON FRAME AND ENGINE
Cooling system
9.55
–
Switch off the ignition by turning the orange programming key to the OFF position
–
Pull out the programming key.
All black ignition keys are activated included in this job sequence are activated.
The water pump
The pressure in the cooling system resulting from heat is regulated by a valve in the radia-
tor cap. This permits the specified coolant temperature without causing any malfunctions.
125 °C (257 °F)
700620-10
Cooling takes place by means of the air stream and a radiator fan, which is controlled by a
thermoswitch.
The lower the speed, the less the cooling effect. Dirty cooling fins also reduce the cooling
effect.
The heat expansion causes the surplus coolant to flow into the compensating tank
the temperature falls, this surplus coolant is sucked back into the cooling system.
700621-10
in the engine forces the coolant to flow.
128
.
. When
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