Kia Stinger: Timing System / Timing Chain

Kia Stinger CK 2018-2021 Service Manual / Engine Mechanical System / Timing System / Timing Chain

Repair procedures
Removal
1.

Remove the cylinder head cover.

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

2.

Turn the crankshaft pulley and align its groove with the timing mark of the timing chain cover to set the piston of No.1 cylinder to the top dead center on compression stroke.

3.

Remove the timing chain cover.

(Refer to Timing System - "Timing Chain Cover")

4.

Make sure that the key (A) of crankshaft is aligned with the mating surface of main bearing cap. As a result of this, the piston of No.1 cylinder is placed at the top dead center on compression stroke.

5.

Release the ratchet by pulling the link down using a thin rod. Compress the piston and then insert a stopper pin into the hole on the ratchet to hold the compressed piston. Remove the timing chain tensioner (A).

6.

Remove the timing chain tensioner arm (A).

7.

Remove the timing chain guide (A).

8.

Remove the timing chain (A).

9.

Remove the timing chain oil jet (A) and the crankshaft chain sprocket (B).

10.

Remove the balance shaft chain.

(Refer to Lubrication system - "Balance Shaft & Oil Pump")

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.

4.

Check the timing chain for its elongation, abnormal wear or damage. Replace if necessary.

Installation
1.

Install the balance shaft chain.

(Refer to Lubrication system - "Balance Shaft & Oil Pump")

2.

Install the crankshaft chain sprocket (B) and the timing chain oil jet (A).

Tightening torque:

7.8 - 9.8 N·m (0.8 - 1.0 kgf·m, 5.8 - 7.2 lb·ft)

3.

Set the crankshaft so that the key (A) of crankshaft will be aligned with the mating surface of main bearing cap. Put the intake and exhaust camshaft assembly so that the TDC marks (B) of the intake and exhaust CVVT sprockets will be aligned with the top surface of cylinder head. As a result of this, the piston of No.1 cylinder is placed at the top dead center on compression stroke.

4.

Install the timing chain guide (A).

Tightening torque:

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

  

The timing marks of each sprocket should be matched with timing marks (color link) of timing chain when installing the timing chain.

5.

Install the timing chain. To install the timing chain with no slack between each shaft (cam, crank), follow the below procedure.

Crankshaft sprocket (A) → Timing chain guide (B) → Intake CVVT sprocket (C) → Exhaust CVVT sprocket (D).

6.

Install the timing chain tensioner arm (A).

Tightening torque:

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

7.

Install the timing chain auto tensioner (A) and remove the stopper pin.

Tightening torque:

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

8.

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.

9.

Install the timing chain cover.

(Refer to Timing System - "Timing Chain Cover")

10.

Install cylinder head cover.

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

11.

Add all the necessary fluids and check for leaks. Connect KDS/GDS. Check for codes, note, and clear. Recheck.

  

Refill engine with engine oil.

Refill a transaxle with fluid.

Refill a radiator and a reservoir tank with engine coolant.

Clean battery posts and cable terminals and assemble.

Inspect for fuel leakage.

After assemble the fuel line, turn on the ignition switch (do not operate the starter) so that the fuel pump runs for approximately two seconds and fuel line pressurizes.

Repeat this operation two or three times, then check for fuel leakage at any point in the fuel line.

Refill radiator and reservoir tank with engine coolant.

Bleed air from the cooling system.

Timing Chain Cover
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