Remove the cylinder head cover.

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

Set the piston of No.1 cylinder to the TDC (top dead center) on compression stroke.

(1)

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

note

Do not rotate engine counterclockwise.

(2)

Check that the TDC marks of the intake CVVT sprocket and exhaust camshaft sprocket are in straight line on the cylinder head surface as shown in the illustration.

caution

If not, turn the crankshaft one revolution (360°). (Do not rotate engine counterclockwise.)

Remove the timing chain cover.

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

Remove the hydraulic tensioner (A).

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

Remove the timing chain (A).

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

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

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

Set the dowel pin of crankshaft to be about 3° with vertical center line.

Align the TDC marks of the exhaust camshaft and intake CVVT sprockets with the upper sureface of the cylinder head to make No.1 cylinder be positioned at TDC.

Install the new O-rings (A).

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

note

●

When installing a timing chain, align the timing marks on the sprockets with the timing marks (color links) of the chain.

●

Order : Crankshaft sprocket → Timing chain guide → Intake CVVT sprocket → Exhaust camshaft sprocket

Install the chain tensioner arm (A).

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

Install the other parts in the reverse order of removal.