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

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Mazda 3
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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
 


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Thermostat



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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The coolant pump

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