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Home >> Mazda >> 2016 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical System >> Timing Chain Removal/Installation >> Electric Variable Valve Timing Motor/Driver Installation Note

Electric Variable Valve Timing Motor/Driver Installation Note

  1. Install a new O-ring to the O-ring installation groove of the engine front cover.
    CAUTION:
    • To prevent damage to the electric variable valve timing motor/driver, do not apply excessive force (force of 100 N {10.2 kgf, 22.5 lbf} or more) to the shaded areas shown in the figure.
    Fig 1: Identifying Electric Variable Valve Timing Motor/Driver Shaded Area
    G10951480Courtesy of MAZDA MOTORS CORP.
  2. Install the electric variable valve timing motor/driver using the following procedures.
NOTE:
  • The eccentric shaft on the electric variable valve timing actuator side can be rotated to the left and right.
    Fig 2: Rotating Electric Variable Valve Timing Actuator Eccentric Shaft
    G10951481Courtesy of MAZDA MOTORS CORP.
  • The electric variable valve timing motor/driver can be assembled with the joint groove of the eccentric shaft in any position, and it will not lead to vehicle damage or performance reduction.
  1. Before installation, rotate the joint on the end of the electric variable valve timing motor/driver so that it is aligned to the joint groove on the electric variable valve timing actuator side.
    Fig 3: Identifying Electric Variable Valve Timing Motor/Driver Joint And Electric Variable Valve Timing Actuator Joint Groove
    G10951482Courtesy of MAZDA MOTORS CORP.
  2. Engage the joint on the end of the electric variable valve timing motor/driver with the joint groove on the electric variable valve timing actuator side.
  3. Attach the seal surface.
  4. Tighten the electric variable valve timing motor/driver installation bolts.

    Tightening torque 

    • 20-26 N.m {2.1-2.6 kgf.m, 15-19 ft.lbf}