Hyundai Elantra: Removal - Cylinder Head. Repair procedures - Cylinder Head Assembly - Engine Mechanical System - Hyundai Elantra MD 2010-2018 Service manualHyundai Elantra: Removal


Engine removal is not required for this procedure.
Use fender covers to avoid damaging painted surfaces.
To avoid damaging the cylinder head, wait until the engine coolant temperature drops below normal temperature (20C [68F]) before removing it.
When handling a metal gasket, take care not to fold the gasket or damage the contact surface of the gasket.
To avoid damage, unplug the wiring connectors carefully while holding the connector portion.
Mark all wiring and hoses to avoid misconnection.
Turn the crankshaft pulley so that the No. 1 piston is at TDC (Top dead center).
1.
Disconnect the battery negative terminal. (Refer to Engine and transaxle assembly in this group)
2.
Remove the RH front wheel. (Refer to SS group Wheel)
3.
Remove the RH under cover. (Refer to Engine and transaxle assembly in this group)
4.
Remove the engine cover. (Refer to Engine and transaxle assembly in this group)
5.
Remove the air duct and the air cleaner assembly. (Refer to Intake and exhaust system in this group)
6.
Loosen the drain plug, and drain the engine coolant. Remove the radiator cap to help drain the coolant faster. (Refer to Cooling system in this group)
7.
Disconnect the radiator upper hose and lower hose. (Refer to Cooling system in this group)
8.
Disconnect the wiring connectors and harness clamps, and then remove the wiring and protectors from the cylinder head and the intake manifold.
(1)
The intake OCV (Oil control valve) connector (A)

(2)
The exhaust OCV (Oil control valve) connector (A)

(3)
The alternator connector (A)

(4)
The ignition coil connectors (A)

(5)
The intake CMPS (Camshaft position sensor) connector (A)
(6)
The exhaust CMPS (Camshaft position sensor) connector (B)

(7)
The injector connectors (A)

(8)
The front and/or rear HO2S (Heated oxygen sensor connectors (A)
[ULEV]

[SULEV]

(9)
The condenser connector (A)

(10)
The PCSV (Purge control solenoid valve) connector (A)

(11)
The ECTS (Engine coolant temperature sensor) connector (A)

(12)
The VIS (Variable Intake System) connector (A)

(13)
The MAPS (Manifold absolute pressure sensor) & IATS (Intake air temperature sensor) connector (A)

(14)
The ETC (Electronic throttle control) connector (A)

(15)
The VCMA (Variable charge motion actuator) connector (A)

9.
Disconnect the brake booster vacuum hose (A) and the heater hoses (B).

10.
Disconnect the fuel hose (A) and PCSV (Purge control solenoid valve) hose (B).

11.
Remove the injector & rail assembly (A). (Refer to FL Injector)

12.
Remove the intake and exhaust manifold. (Refer to Intake and exhaust system in this group)
13.
Remove the timing chain including the drive belt, the cylinder head cover, the alternator and the timing chain cover. (Refer to Timing system in this group)
14.
Remove the vacuum pipe (A).

15.
Remove the condenser (A).

16.
Remove the PCSV bracket (A).

17.
Remove the intake CVVT assembly (A) and exhaust CVVT assembly (B).

When removing the CVVT assembly bolt, hold the camshaft with a wrench to prevent the camshaft from rotating.

18.
Remove the camshaft.
(1)
Remove the camshaft bearing cap (A) by loosening the bolts in the sequence as shown.

(2)
Remove the camshafts (A).

19.
Remove the cam carrier (A).

20.
Remove the HLA (Hydraulic lash adjuster) (A) and the swing arm (B).

The HLA and swing arm should be kept together as pairs during storage after removal and reinstallation.
21.
Disconnect the bypass hose (A).
22.
Unfasten the heater pipe mounting bolts (B).

23.
Remove the water temperature control assembly.
(Refer to Cooling system in this group)
24.
Remove the oil control adapter (A) with the gasket (B).

25.
Remove the intake OCV (Oil control valve) (A).

26.
Remove the exhaust OCV (Oil control valve) (A).

27.
Remove the rear engine hanger (A).

28.
Remove the spark plugs (A). (Refer to EE group Ignition system)

29.
Remove the cylinder head.
(1)
Using bit socket (12PT), uniformly loosen and remove the cylinder head bolts, in several passes, in the sequence as shown.

Head warpage or cracking could result from removing bolts in an incorrect order.
(2)
Lift the cylinder head (A) from the dowels on the cylinder block and place the cylinder head on wooden blocks on a bench.
Be careful not to damage the contact surfaces of the cylinder head and cylinder block.
(3)
Remove the cylinder head gasket (B).


    Disassembly
    Identify, valves and valve springs as they are removed so that each item can be reinstalled in its original position. ...