Mazda 2: Variable Valve Timing Actuator

Mazda 2 2007-2014 Service Manual / Engine / Engine System / Variable Valve Timing Actuator

VARIABLE VALVE TIMING ACTUATOR INSPECTION

CAUTION:

1. Disconnect the negative battery cable.

2. Remove the fresh-air duct and the air cleaner as a single unit. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION).

3. Remove the ignition coils. (See IGNITION COIL REMOVAL/INSTALLATION).

4. Disconnect the ventilation hose. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION).

5. Set the vacuum hose out of the way.

6. Remove the cylinder head cover. (See TIMING CHAIN REMOVAL/INSTALLATION).

7. Verify that the camshaft knock pin hole of the variable valve timing actuator and the T-mark of the cover are aligned and fixed as shown in the figure.

Mazda 2. VARIABLE VALVE TIMING ACTUATOR

8. Install in the reverse order of removal.

VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION

CAUTION:

1. Disconnect the negative battery cable.

2. Remove the fresh-air duct and the air cleaner as a single unit. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION).

3. Remove the ignition coils. (See IGNITION COIL REMOVAL/INSTALLATION).

4. Disconnect the ventilation hose. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION).

5. Set the vacuum hose out of the way.

6. Remove the cylinder head cover. (See TIMING CHAIN REMOVAL/INSTALLATION).

7. Remove the drive belt. (See DRIVE BELT REMOVAL/INSTALLATION).

8. Remove the engine front cover blind plug as shown in the figure.

Mazda 2. VARIABLE VALVE TIMING ACTUATOR

9. Insert a M6 bolt (45 to 80 mm length bolt with threads to the end) into the right-side service hole shown in the figure, and set the bolt at a slightly outward position by loosening it approx. 2 mm from where it contacts the tensioner arm.

Mazda 2. VARIABLE VALVE TIMING ACTUATOR

10. Release tension on the timing chain.

NOTE:

Mazda 2. VARIABLE VALVE TIMING ACTUATOR

Mazda 2. VARIABLE VALVE TIMING ACTUATOR

  1. Press down the link plate of the chain tensioner from the service hole on the left side using a thin flathead screwdriver (precision screwdriver) as shown in the figure. Then rotate the crank pulley backwards (counterclockwise) with the plunger lock released.

Mazda 2. VARIABLE VALVE TIMING ACTUATOR

  1. Rotate the M6 bolt installed to the front cover by hand and insert it to the position where it catches the inside of the rib on the tensioner arm.

Mazda 2. VARIABLE VALVE TIMING ACTUATOR

11. Fix the camshaft using a wrench on the cast hexagon. Remove the camshaft sprocket installation bolt.

Mazda 2. VARIABLE VALVE TIMING ACTUATOR

12. Remove the timing sprocket on the exhaust side with the timing chain positioned out of the way.

Mazda 2. VARIABLE VALVE TIMING ACTUATOR

13. Loosen the camshaft cap installation bolts in two or three steps in the order shown in the figure, and remove the camshaft caps.

Mazda 2. VARIABLE VALVE TIMING ACTUATOR

14. Remove the variable valve timing actuator and intake camshaft as a single unit.

15. Lock the camshaft against rotation by holding the camshaft with the vise and securing the cast hexagon with a wrench.

Mazda 2. VARIABLE VALVE TIMING ACTUATOR

16. Loosen the variable valve timing actuator installation bolt, and then remove the variable valve timing actuator.

17. Install the variable valve timing actuator.

18. Tighten the variable valve timing actuator installation bolt.

Tightening torque

19. Align the timing marks on the crank pulley and the front cover, and then align the No.1 cylinder to the TDC.

Mazda 2. VARIABLE VALVE TIMING ACTUATOR

20. With No.1 cylinder cam aligned at TDC of the compression stroke, install the variable valve timing actuator and the camshaft on the intake air side as a single unit.

21. Install the camshaft caps to the position of a carved seal number to shown in the figure, and tighten the camshaft installation bolts in two or three steps uniformly in the order shown in the figure.

Mazda 2. VARIABLE VALVE TIMING ACTUATOR

Tightening torque

22. Align the sprocket timing marks on the intake and exhaust camshafts so that they form a straight line in alignment with the upper horizontal surface of the cylinder head.

Mazda 2. VARIABLE VALVE TIMING ACTUATOR

23. Fix the camshaft using a wrench on the cast hexagon. Install the camshaft sprocket installation bolt.

Tightening torque

24. Remove the M6 bolt holding the tensioner arm.

25. Verify that there is no slack in the timing chain, and then verify that the marks on the camshaft sprocket and the crank pulley are aligned.

26. Inspect the valve timing by rotating the crankshaft clockwise twice.

27. Install the new engine front cover blind plug.

Mazda 2. VARIABLE VALVE TIMING ACTUATOR

Tightening torque

28. Install in the reverse order of removal.

READ NEXT:

 Oil Control Valve (OCV)

OIL CONTROL VALVE (OCV) INSPECTION Coil Resistance Inspection 1. Disconnect the negative battery cable. 2. Disconnect the OCV connector. 3. Measure the coil resistance between terminals A and B usin

 Timing Chain

TIMING CHAIN REMOVAL/INSTALLATION WARNING: Do not remove the jack from the engine with the bolt of engine mount No. 3 removed because the engine may fall off and cause a serious accident. 1. Dis

 Cylinder Head Gasket

CYLINDER HEAD GASKET REPLACEMENT WARNING: Fuel vapor is hazardous. It can very easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. Fuel line spills an

SEE MORE:

 Manual Type

Type A Type B Type C Type D Control Switches Temperature control dial (Type A/Type B/Type C) This dial controls temperature. Turn it clockwise for hot and anticlockwise for cold. (Type D) This dial controls the air temperature when using the air conditioner. Turn it clockwise

 Tyre Pressure Monitoring System

The Tyre Pressure Monitoring System (TPMS) monitors the air pressure of all four tyres. If the air pressure of one or more tyres is too low, the system warns the driver by indicating the tyre pressure monitoring system warning light in the instrument cluster and operating a beep sound. The

© 2016-2020 Copyright www.m2info.net