Hyundai Kona: Timing System / Timing Chain Repair procedures

Hyundai Kona (OS) 2018-2021 Service Manual / Engine Mechanical System / Timing System / Timing Chain Repair procedures

Removal

1.	Turn the crankshaft pulley clockwise, and align its groove with the timing mark of the timing chain cover.

2.	Remove the timing chain cover & oil pump assembly. (Refer to Timing System - "Timing Chain Cover & Oil Pump Assembly")

3.	Align the timing marks of the CVVT sprockets with the upper surface of the cylinder head to make No.1 cylinder be positioned at TDC.

Remove the hydraulic tensioner (A).

•	Before removing the tensioner, fix the piston of the tensioner with a pin through the hole (B) at compressed position.

5.	Remove the timing chain tensioner arm (A) and guide (B).

6.	Remove the timing chain (A).

Inspection

Sprockets, Hydraulic Tensioner, Chain Guide, Tensioner Arm, Timing Chain

1.	Check the CVVT sprocket, crankshaft sprocket teeth for abnormal wear, cracks or damage. Replace if necessary.

2.	Check a contact surface of the chain tensioner arm and guide for abnormal wear, cracks or damage. Replace if necessary.

3.	Check the hydraulic tensioner for its piston stroke and ratchet operation. Replace if necessary.

Installation

1.	Dowel pin of crankshaft should be positioned at 3° in relation to vertical center line.

2.	Align the TDC marks (A) of the CVVT sprockets with the upper surface of the cylinder head to make No.1 cylinder be positioned at TDC.

3.	Install the new O-rings (A).

Install the timing chain guide (A) and the timing chain (B).

Tightening torque :

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

•	When installing a timing chain, align the timing marks on the sprockets with paint marks of the chain.

•	Order : Crankshaft sprocket → Timing chain guide → Intake CVVT sprocket → Exhaust CVVT sprocket.

Install the chain tensioner arm (A).

Tightening torque :

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

Install the hydraulic tensioner (A) and remove the pin (B).

Tightening torque :

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

7.	After rotating crankshaft 2 revolutions in regular direction (clockwise viewed from front), confirm that the TDC marks (A) on the intake and exhaust CVVT sprockets aligned with the top surface of cylinder head.

8.	Install the timing chain cover & oil pump assembly. (Refer to Timing System - "Timing Chain Cover & Oil Pump Assembly")

Timing Chain Components and components location

Components 1. Timing chain 2. Timing chain guide 3. Timing chain arm 4. Timing chain auto tensioner ...

Cylinder Head Assembly

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