Hyundai Genesis (DH): Cylinder Head Assembly / CVVT Assembly Repair procedures

Hyundai Genesis (DH) 2013-2016 Service Manual / Engine Mechanical System / Cylinder Head Assembly / CVVT Assembly Repair procedures

Removal
Continuous Variable Valve Timing (CVVT)
1.
Remove the timing chain.
(Refer to Timing System - "Timing Chain")
2.
Remove the CVVT assembly.
A.
A: LH exhaust CVVT
B.
B: LH intake CVVT

C.
C: RH intake CVVT
D.
D: RH exhaust CVVT

   
When removing the CVVT assembly bolt, prevent the camshaft from rotating by using a wrench at position (A).

Inspection
Continuously variable valve timing (CVVT) Assembly
1.
Clamp the camshaft using a vise. Be careful not to damage the cam lobes and journals while using the vise.
2.
Check that the CVVT is locked by turning it clockwise or counterclockwise. It is normal that the CVVT does not rotate.
3.
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]

[Exhaust]

4.
Intake CVVT : Apply approx. 150 kPa (1.5 kgf/cm?, 21 psi ) of compressed air into the unsealed advance hole to release the lock.
Exhaust CVVT : Apply approx. 150 kPa (1.5 kgf/cm?, 21 psi ) of compressed air into the unsealed retard hole to release the lock.
   
Cover the oil paths with a piece of cloth when applying compressed air to prevent oil from spraying.
5.
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 : 25

    Description Continuous Variable Valve Timing (CVVT) system advances or retards the valve timing of the intake and exhaust valve in accordance with the ECM control signal which is calculated by the engine speed and load.

    Components 1. RH Exhaust camshaft2. RH Intake camshaft3. LH Intake camshaft4. LH Exhaust camshaft

    Other information:

    Hyundai Genesis (DH) 2013-2016 Service Manual: Description and Operation

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    Hyundai Genesis (DH) 2013-2016 Service Manual: General Safety Information and Caution

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