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

Hyundai Sonata LF 2014-2019 Service Manual / Engine Mechanical System / 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

    C..

    CVVT & Camshaft Components and Components Location

    C..

    Other information:

    Hyundai Sonata LF 2014-2019 Service Manual: Specifications


    S..

    Hyundai Sonata LF 2014-2019 Service Manual: Specifications


    Specifications DescriptionSpecificationsLimitGeneralTypeIn-line, DOHC?Number of cylinders4?Bore77mm (3.0315in)?Stroke85.44mm (3.3638in)?Total displacement1,591 cc (97.09 cu.in)?Compression ratio9.5 : 1?Firing order1-3-4-2?Valve timingIntake valveOpensATDC 8°/BTDC 42°?ClosesABDC 69°/ABDC 19°?Exhaust valveOpensBBDC 40°/BBDC 0°?ClosesATDC 3°/ATDC 43°?Cylinder headFlatness of gasket surfaceLess than 0...

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