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Home >> Mazda >> 2021 >> CX-3 AWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical System >> Hydraulic Variable Valve Timing Actuator Inspection >> Notes

Hydraulic Variable Valve Timing Actuator Inspection: Notes

WARNING:
  • A hot engine can cause severe burns. Turn off the engine and wait until it is cool before servicing.
CAUTION:
  • Do not disassemble the hydraulic variable valve timing actuator because it is a precision unit.
  1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
  2. Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION .)
  3. Remove the ignition coil/ion sensors. (See IGNITION COIL/ION SENSOR REMOVAL/INSTALLATION .)
  4. Remove the cylinder head cover. (See TIMING CHAIN REMOVAL/INSTALLATION .)
  5. Verify the hydraulic variable valve timing actuator shape and identify the hydraulic variable valve timing actuator type.

    Without coolant control valve 

    G11437280Courtesy of MAZDA MOTORS CORP.

    With coolant control valve 

    G13149213Courtesy of MAZDA MOTORS CORP.
  6. Inspect the hydraulic variable valve timing actuator. (See TYPE A .) (See TYPE B .) (See TYPE C .)
  7. Install in the reverse order of removal.
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