Kia Rio: Timing System / Timing Chain

Kia Rio 2017-2020 YB Service Manual / Engine Mechanical System / Timing System / Timing Chain

Components and components location

Components

1. Timing chain
2. Timing chain cam guide
3. Timing chain guide

4. Timing chain crank guide
5. Timing chain tensioner arm
6. Timing chain tensioner

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.	Before removing the timing chain, mark the timing chain with an identification based on the location of the sprocket (CVVT) because the identification mark on the chain for TDC (Top Dead Center) can be erased.

5.	Remove the timing chain cam guide (A).

6.	Remove the timing chain crank guide (A).

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

Before removing the tensioner, fix the piston of the timing chain auto tensioner with a stopper pin (A) through the hole at compressed position.

8.	Remove the timing chain (A).

9.	Remove the timing chain guide (A).

10.	Remove the crankshaft sprocket (A).

Inspection

Sprockets, Chain Tensioner, Chain Guide, Chain Tensioner Arm

1.	Check the camshaft sprocket and crankshaft sprocket for abnormal wear, cracks, or damage. Replace as necessary.

2.	Inspect the tensioner arm and chain guide for abnormal wear, cracks, or damage. Replace as necessary.

3.	Check that the tensioner piston moves smoothly.

Installation

1.	Set the key of crankshaft about 3.7° with horizontal center line. As a result of this, the piston of No.1 cylinder is placed at the top dead center on compression stroke.

2.	Install the crankshaft sprocket (A).

3.	Align the mark of cam shaft sprocket (CVVT) on 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.

Install the timing chain guide (A).

Tightening torque :

18.6 - 21.6 N·m (1.9 - 2.2 kgf·m, 13.7 - 15.9 lb·ft)

Install the timing chain (A).

Install the timing chain with no slack and recommend the below procedure.

Crankshaft sprocket → Oil pump sprocket → Timing chain guide → Intake camshaft sprocket (CVVT) → Exhaust camshaft sprocket (CVVT).

The timing mark of each sprocket should be matched with timing mark (color link) of timing chain at during installation.

Install the timing chain auto tensioner (A) and tensioner arm (B).

Tightening torque :

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

7.	Remove the timing chain auto tensioner stoper pin (A).

Install the timing chain crank guide (A).

Tightening torque :

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

Install the timing chain cam guide (A).

Tightening torque :

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

10.

After rotating the crankshaft 2 revolutions in regular direction (clockwise viewed from front), confirm the timing

Always turn the crankshaft clockwise.

Turning the crankshaft counter clockwise before building up oil pressure in the hydraulic timing chain tensioner may result in the chain disengaging from the sprocket teeth.

11.	Install the other parts in the reverse order of removal.A

Timing Chain Cover

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