REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Mazda 3 (2003 release)

general info. full specifications. diagnostics. hints. tips. tricks

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Mazda
	3
		Operation and maintenance of car
		Engine
			General description new engines models L8, LF, L3
				The mechanical part of engines
				Variable valve timing mechanism
				Lubrication system
				Cooling system
					Overview
					Radiator
					Fan, radiator cowling, coolant expansion tank
					Thermostat
					The coolant pump
				Fuel system
				Exhaust and Emission
				Electric motors
			The mechanical part of engines
			Appendix 1
			Annex 2
			Appendix 3
			Engine Z6 - mechanical part
			Lubrication system
			Cooling system
			Intake system
			Fuel system
			Exhaust and Emission
			Ignition system
			Control system
			Tables
		Transmission
		Chassis
		Steering Gear
		Brakes
		Onboard electric
		Body

printable version

Thermostat

Fig. 2.51. Thermostat: 1 - side of the engine; 2 - side of the radiator; 3 - the coolant pump; 4 - thermostat; 5 - the thermostat; 6 - oil cooler (LF engines and L3); 7 - heater hose (engines L8); 8 - lower radiator hose

This is used in the system of wax thermostat with a pin. The plastic housing of the thermostat set the thermostat in stainless steel. When the engine coolant temperature - below 75 ?� C, the thermostat stops the circulation of the coolant through the radiator to improve engine warming. When the engine coolant temperature is between 80 ?� C and 84 ?� C, the thermostat valve begins to open, coolant to circulate through the cooler to stabilize the temperature of the engine (Fig. 2.51).

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Fan, radiator cowling, coolant expansion tank

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The coolant pump