Hyundai Tucson: Timing System - Replacement

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Engine Mechanical System / Timing System / Timing System - Replacement


  1. Variable force solenoid valves
  2. Timing chain cover
  3. Cam to cam guide
  4. Timing chain
  5. Timing chain tensioner arm
  6. Timing chain tensioner arm
  7. Timing chain tensioner
  8. Crankshaft sprocket
  9. Oil pump chain
  10. Oil pump chain tensioner


  1. Remove the crankshaft damper pulley.

(Refer to Drive Belt System - "Crankshaft Damper Pulley")

  1. Remove the front oil seal (A).

  1. Apply engine oil to a new oil seal lip & outer surface.


Remove any debris from the lip portion of the oil seal.

  1. Using the SST (0K231-2C200), install a new front oil seal.



  • Always use a new front oil seal.
  1. Install in the reverse order of removal.

Timing System - Removal


  • Use fender covers to avoid damaging painted surfaces.
  • To avoid damage, unplug the wiring connectors carefully while holding the connector portion.


Mark all wiring and hoses to avoid misconnection.

  1. Disconnect the battery negative terminal.
  2. Remove the engine room under cover, and then drain the engine coolant.

(Refer to Cooling System - "Coolant")

  1. Drain the engine oil.

(Refer to Lubrication System - "Engine Oil")

  1. Remove the drive belt, and then remove the drive belt tensioner.

(Refer to Drive Belt System - "Drive Belt Tensioner")

  1. Remove the hybrid starter generator (HSG).

(Refer to Engine Electrical System - "Mild Hybrid Starter Generator (MHSG)")

  1. Remove the crankshaft damper pulley.

(Refer to Drive Belt System - "Crankshaft Damper Pulley")

  1. Remove the oil pan.

(Refer to Lubrication System - "Oil Pan")

  1. Remove the cylinder head cover.

(Refer to Cylinder Head Assembly - "Cylinder Head Cover")

  1. Insert the rubber block between jack and lower crankcase.


Insert the rubber block between jack and lower crankcase to prevent damage to parts

  1. Remove the engine mounting support bracket.

(Refer to Engine And Transaxle Assembly - "Engine Mounting")

  1. Remove the water pump.

(Refer to Cooling System - "Water Pump")

  1. Disconnect the engine ground cable (A) from the timing chain cover.

Tightening torque : 6.8 - 9.8 N.m (0.7 - 1.0 kgf.m, 5.1 - 7.2 lb-ft)

  1. Loosen the turbo charger coolant hose and pipe mounting bolts (A).

Tightening torque : 9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

  1. Remove the intake and exhaust variable force solenoid (VFS) valves (A).

Tightening torque : 9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)



The variable force solenoid (VFS) must be removed before removing the timing chain cover.

  1. Remove the timing chain cover (A) and hanger (B).

Timing System - Installation


     Timing System - Installation

    Keep the liquid gasket sealing surfaces (timing chain cover, cylinder head, cam carrier, cylinder block, lower crankcase) free from foreign matters, cured sealant, oil, dust, moisture and etc. Spray the cleaner on the sealing surface and

     Timing System - Removal

    Disconnect the battery negative terminal. Turn the crankshaft damper pulley clockwise, and align its groove with the timing mark of the timing chain cover. Remove the timing chain cover. (Refer to Timing System - "Timing C

     Timing System - Installation

    Install the crankshaft sprocket (A). Place the crankshaft key at the left 180º. Install the oil pump chain. (Refer to Lubrication System - "Oil Pump") Install the timing chain (A). WARNING When inst


     ECS (Electronic Control Suspension) System

    Description Real-time continuous control of the damping force according to vehicle running conditions and the state of road surface will enhance ride comfort and steering safety, including roll / pitch reduction in case of vehicle dynamics con

     Exhaust Gas Temperature Sensor (EGTS)

    Description Exhaust Gas Temperature Sensor (EGTS) is installed on Gasoline Particulate Filter (GPF) senses the temperature of exhaust gas flowing into. When pre-determined engine condition is set, ECM burns soot gathered in GPF with exhaust ga