Timing Chain Repair Procedures

Removal

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

   

2. 2
   Remove the timing chain cover. (Refer to Valve Timing - Timing Chain Cover)
3. 3
   Align the alignment marks of the CVVT sprockets with the upper surface of the cylinder head so that the No. 1 cylinder is at TDC.

   

   

4. 4
   Remove the timing chain (A).

   

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

   

6. 6
   Remove the timing chain (A).

   

Inspection

1. 1
   Inspect the CVVT sprocket and the crankshaft sprocket teeth for abnormal wear, cracks or damage. Replace if necessary.
2. 2
   Inspect the contact surfaces of the timing chain tensioner arm and chain guide for abnormal wear, cracks or damage. Replace if necessary.
3. 3
   Inspect the hydraulic tensioner for plunger movement and ratchet operation. Replace if necessary.
4. 4
   Inspect the timing chain for elongation, excessive wear, or damage. Replace if necessary.

Installation

1. 1
   The crankshaft positioning pin should be positioned at an angle of 3° to the vertical centerline.

   

2. 2
   Align the TDC marks (A) of the CVVT sprockets with the upper surface of the cylinder head so that the No. 1 cylinder is at TDC.

   

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

   

4. 4
   Install the timing chain guide (A) and the timing chain (B).

   Tightening torque: 9.8 ~ 11.8 N·m

   

5. 5
   Install the timing chain tensioner arm (A).

   Tightening torque: 9.8 ~ 11.8 N·m

   

6. 6
   Install the hydraulic tensioner (A) and remove the pin (B).

   Tightening torque: 9.8 ~ 11.8 N·m

   

7. 7
   Install the timing chain cover.