MAINTENANCE WORK ON CHASSIS AND ENGINE
126
9.70
Cooling system
600630-10
The water pump
in the engine forces the coolant to flow.
The pressure resulting from the warming of the cooling system is regulated by a valve in
the radiator cap
. Heat expansion causes excess coolant to flow into the compensating
tank
. If the temperature falls, the excess coolant is sucked back into the cooling system.
The specified coolant temperature is therefore permissible without danger of function prob-
lems.
125 °C (257 °F)
400407-10
The coolant is cooled by the air stream and a radiator fan
, which is controlled by a ther-
moswitch.
The lower the speed, the less the cooling effect. Dirty cooling fins also reduce the cooling
effect.
9.71
Checking the antifreeze and coolant level
Warning
Scalding hazard
During motorcycle operation, the coolant gets very hot and is under pressure.
–
Do not open the radiator, the radiator hoses or other components of the cooling system when the engine is hot. Allow the engine
and radiator to cool down. If you are scalded, hold the affected part under cold water immediately.
Summary of Contents for Chassis 690 SMC
Page 1: ...OWNER S MANUAL 2009 690 SMC EU 690 SMC AUS UK ART NO 3211365en...
Page 2: ......
Page 8: ...CONTENTS 6 AUXILIARY SUBSTANCES 176 STANDARDS 178 INDEX 179...
Page 14: ...VIEW OF VEHICLE 12 3 1 View of vehicle front left side 600637 10...
Page 16: ...VIEW OF VEHICLE 14 3 2 View of vehicle rear right 600638 10...