Hyundai Sonata: Cylinder Head Assembly / Cylinder Head Cover Repair procedures

Removal
1.
Remove the engine cover.
2.
Disconnect the battery negative terminal.
3.
Remove the air clean hose.
(Refer to Intake and Exhaust System - "Ari Cleaner")
4.
Disconnect the engine wiring connector and haness clamp and then remove the cylinder head protector and wiring from engine.

5.
Disconnect the exhaust OCV (Oil Control Valve) connector.
(Refer to Fuel System - "CVVT Oil Control Valve")
6.
Disconnect the ignition coil.
(Refer to Engine Electrical System - "Ignition Coil")
7.
Remove the PCV (Positiv Crankcase Ventilation) hose(A).

8.
Remove the high pressure fuel pump.
(Refer to Fuel System - "High Pressure Fuel Pump")
9.
Remove the cylinder head cover (A), gasket (B).

   
Loosen the cylinder head cover bolts with the order and steps.

Installation
1.
Install the cylinder head cover.
(1)
The hardening sealant located on the upper area between timing chain cover and cylinder head should be removed before assembling cylinder head cover.
(2)
After applying sealant, it should be assembled within 5 minutes.

Bead width : 2.0 ~ 3.0mm(0.07 ~0.11 in.)
Sealant : LOCTITE 5900H

(3)
Install the cylinder head cover (A) with a new gasket (B).

   
Do not reuse the disassembled gasket.
(4)
Tighten the cylinder head cover bolts with the order and steps.

Tightening torque
1st step:
3.9 ~ 5.9 N.m (0.4 ~ 0.6 kgf.m, 2.9 ~ 4.3 lb-ft)
2nd step: 7.8 ~ 9.8 N.m (0.8 ~ 1.0 kgf.m, 5.8 ~ 7.2 lb-ft)

2.
Install in the reverse order of removal.
Cylinder Head Cover Components and Components Location
Components 1. Cylinder head cover2. Cylinder head cover gasket3. Cam position sensor ...

CVVT & Camshaft Components and Components Location
Components 1. Exhaust camshaft2. Intake camshaft3. Exhaust CVVT 4. Intake CVVT 5. Camshaft bearing cap6. Camshaft front bearing cap7. O-ring8. OCV (Oil Control Valve) adapter ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Special Service Tools
Special Service Tools Tool(Number and Name)IllustrationUseDeployment tool0957A-34100AAirbag deployment tool.Deployment adapter0957A-3Q100Use with deployment tool.(DAB, PAB, EFD, BPT, CAB)Deployment adapter0957A-3F100Use with deployment tool.(SAB, KAB)Dummy0957A-38200Simulator to check the resis ...

Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures
Removal     • Put on gloves to protect your hands.     • Use seat covers to avoid damaging any surfaces. 1. Remove the roof side molding. (Refer to Body Side Moldings - "Roof Side Molding") 2. Remove the package tray trim. (Refer to ...

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