Hyundai Tucson: Cylinder Head Assembly

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Engine Mechanical System / Cylinder Head Assembly


  1. Front camshaft bearing cap
  2. Intake camshaft bearing cap
  3. Exhaust camshaft bearing cap
  4. Cam carrier
  5. Fuel pump adaptor
  6. Engine hanger
  7. Cylinder head
  8. Cylinder head gasket

  1. Intake OCV center bolt
  2. Intake OCV center bolt
  3. CVVD assembly
  4. Exhaust CVVT assembly
  5. Exhaust camshaft
  6. Swing arm
  7. Hydraulic lash adjuster (HLA)
  8. Retainer lock
  9. Retainer
  10. Valve stem seal
  11. Valve spring
  12.  Valve spring seat
  13. Cylinder head
  14.  Valve


  1. Cylinder head cover
  2. Engine oil filler cap
  3. Breather hose
  4. PCV hose
  5. Cylinder head cover gasket
  6. Oil seal
  7. Gasket
  8. High pressure fuel pump gasket
  9. Cam position sensor


 Cylinder Head Assembly - Removal

Disconnect the battery negative terminal. Remove the engine cover. (Refer to Engine and Transaxle Assembly - "Engine Cover") Remove the air duct and air cleaner assembly. (Refer to Intake and Exhaust System - "Air Cleane

 Cylinder Head Assembly- Installation

The hardening sealant located on the upper area between timing chain cover and cam carrier, cylinder head cover should be removed before assembling cylinder head cover. Install the cylinder head cover. (1) Install the new gasket. WARNIN

 Cylinder head cover

Removal Disconnect the battery negative terminal. Remove the cylinder head cover. (Refer to Cylinder Head Assembly - "Cylinder Head Cover") Turn the crankshaft damper pulley so that No. 1 piston is at top dead center. (1)


 Cylinder Head

Inspect for flatness. Using a precision straight edge and feeler gauge, measure the contacting surface of the cylinder block and the manifolds for warpage Flatness of cylinder head gasket surface: Less than 0.05 mm (0.0020 in.) fo

 CCWD Actuator- Description

Description CVVD(Continuous Variable Valve Duration) System is a device to control the optimum open and close timing according to the driving mode by changing the valve opening section. CVVD Actuator Specification Circuit Diagram