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

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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
				Engine Model L8 or LF
				Checking the contents of the CO / CH in the exhaust gas
				Measurement of engine compression
				Verify accessory drive belt
					The verification procedure
					Replacing the drive belt
					Check automatic belt tensioner
					Check thermal gaps in the mechanism of the valve
					Adjusting the thermal gaps in the mechanism of the valve
				General information and safety when removing the power unit
				Removal of sealant
				Removal and installation of the power unit
				Check actuator variable valve timing (L3)
				Removal and installation of the actuator variable valve timing (L3)
				Timing chain drive
				Removal and installation of the oil control valve (OCV) (L3)
				Checking the oil control valve (OCV) (L3)
				By operation of the spool valve (OCV) (L3)
				General repair operations on the power unit
				Check the cylinder head
				Assembling the cylinder (the beginning)
				Assembling the cylinder (the end)
				Assembling the cylinder head
				Assembling the valve timing
			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

Check automatic belt tensioner

Remove the drive belt.

Fig. 2.76. Check automatic belt tensioner: 1 - automatic drive belt tensioner

Check for smooth movement of the automatic belt tensioner in the operational direction (Fig. 2.76).

Turn the pulley belt automatic tensioner by hand and make sure that it rotates smoothly.

Replace automatic drive belt tensioner if necessary.

Install the drive belt.