LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 148 (Engine Mechanical (Service Information AJ)) >> Variable Valve Timing Actuator Inspection

Variable Valve Timing Actuator Inspection

WARNING: This page is about a different car, the 2004 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
  • The variable valve timing actuator cannot be disassembled because it is a precision unit.
  1. Remove the cylinder head cover. (See TIMING CHAIN REMOVAL/INSTALLATION .)
  2. Confirm that the key groove on the rotor and the timing mark on the sprocket of the variable valve timing actuator are aligned and fitted.
    • If the key groove and the timing mark are not aligned, rotate the crankshaft clockwise one rotation and then counterclockwise one rotation. Verify that the key groove and the timing mark are aligned.
    • If the key groove and timing mark are still not aligned, replace the variable valve timing actuator.
    • If, when rotating the crankshaft, there is a hitting noise from the variable valve timing actuator each time the cam passes the fully lifted position, it means that the actuator is not secured. Replace the actuator.
      Fig 1: Identifying Variable Valve Timing Actuator Components
      G01052360Courtesy of MAZDA MOTORS CORP.
  3. Install the cylinder head cover. (See TIMING CHAIN REMOVAL/INSTALLATION .)
scientia non olet · About LEMON Manuals