Continuously Variable Valve Timing (CVVT) Assembly
WARNING: This page is about a different variant/trim than selected.
- Inspect the CVVT for smooth rotation.
- Clamp the camshaft using a vise. Be careful not to damage the cam lobes and journals in the vise.
- Check that the CVVT is locked by turning it clockwise or counterclockwise. It must not rotate.
- Intake CVVT: Seal one of the two advance holes in the camshaft journal with tape.
Exhaust CVVT: Seal one of the two retard holes in the camshaft journal with tape.
- Intake CVVT:
- press the center of the valve bolt (A).
- Apply approx. 50 kPa (0.5 kgf/cm2
, 7 psi) of compressed air into the lock pin release hole to release the lock.
Exhaust CVVT: Apply approx. 150kPa (1.5kgf/cm2 21psi) of compressed air into the unsealed retard hole to release the lock.
Information
- Cover the oil paths with a piece of cloth when applying compressed air to prevent oil from spraying.
- Intake CVVT: With compressed air applied, rotate the CVVT into the advance direction (counterclockwise) within its phasing range and check that the CVVT turns smoothly.
Exhaust CVVT: With compressed air applied, rotate the CVVT into the retard direction (clockwise) and check that the CVVT turns smoothly.
CVVT phasing range
Intake: 40° (20° advance and 20° retard from the initial position)
Exhaust: 20°±1° (from the most advanced position to the most retarded position)
- Intake CVVT:
- Move to the center to check that lock pin closes well.
- Rotate the CVVT into the most retarded position (clockwise) and then check that the CVVT is locked.
Exhaust CVVT:
- Rotate the CVVT into the most advanced position (counterclockwise) and then check that the CVVT is locked.