Electric Variable Valve Timing Actuator Installation Note

1. When replacing the electric variable valve timing actuator with a new one, place a mark at the same position as the one placed before removal.
2. Remove the rope suspending the timing chain on the intake side.
3. Remove the timing chain from the exhaust and intake camshaft sprockets and set it aside to the rear, then insert the electric variable valve timing actuator between the engine front cover and the cylinder head.
   Fig 1: Removing Timing Chain From Exhaust And Intake Camshaft Sprockets

   Courtesy of MAZDA MOTORS CORP.
4. Return the timing chain to the exhaust camshaft sprocket.
5. While aligning the mark on the timing chain placed during removal with the one on the electric variable valve timing actuator, engage the chain with the sprocket.
   Fig 2: Aligning Timing Chain Mark

   Courtesy of MAZDA MOTORS CORP.
6. Align the knock pin on the end of the intake camshaft with the notch on the actuator side, then assemble the actuator.
   Fig 3: Aligning Knock Pin On End Of Intake Camshaft With Notch On Actuator Side

   Courtesy of MAZDA MOTORS CORP.
   NOTE:

   • Adjust the knock pin with the notch while adjusting the knock pin position by rotating the camshaft.
7. Hold the intake camshaft using a wrench on the cast hexagon, and tighten the electric variable valve timing actuator installation bolt.

Fig 4: Holding Intake Camshaft Using Wrench On Cast Hexagon

Courtesy of MAZDA MOTORS CORP.

Tightening torque 

• 102-114 N.m {10.5-11.6 kgf.m, 76-84 ft.lbf}