Timing Drive Components

Timing Drive Components





Special Tool(s)





Material

Removal

CAUTION: Since the engine is not free-wheeling, the timing procedures must be followed exactly or piston and valve damage can occur.

1. Remove the engine front cover.





2. Remove the crankshaft sensor ring from the crankshaft.





3. Rotate the crankshaft until the timing mark on the RH camshaft sprocket is approximately at the 11 o'clock position and the timing mark on the LH camshaft sprocket is approximately at the 12 o'clock position.





4. Install the special tools on the camshaft.





5. CAUTION: If one or both of the tensioner mounting bolts are loosened or removed, the tensioner-sealing bead must be inspected for seat integrity. If cracks, tears or separation from the tensioner body or permanent compression of the seal bead is observed, install a new tensioner.

Remove the timing chain tensioning system from both timing chains.
1. Remove the bolts.
2. Remove the timing chain tensioners.
3. Remove the timing chain tensioner arms.





6. Remove the timing chains and crankshaft sprocket.





7. Remove the timing chain guides.
1. Remove the bolts.
2. Remove the LH timing chain guide.
3. Remove the bolts.
4. Remove the RH timing chain guide.

Installation





1. CAUTION: Timing chain procedures must be followed exactly or damage to valves and pistons will result.

CAUTION: Prior to installation, inspect the tensioner-sealing bead for seal integrity. If cracks, tears, separation from the tensioner body or permanent compression of the seal bead is observed, install a new tensioner.





Compress the tensioner plunger, using a vise.





2. Install a retaining clip on the tensioner to hold the plunger in during installation.





3. If the copper links are not visible, mark one link on one end and one link on the other end, and use as timing marks.





4. Install the crankshaft sprocket, making sure the flange faces forward.





5. Install the timing chain guides.
1. Position the LH timing chain guide.
2. Install and tighten the LH bolts.
3. Position the RH timing chain guide.
4. Install and tighten the RH bolts.
^ Tighten to 10 Nm (89 inch lbs.).





6. CAUTION: Unless otherwise instructed, do not rotate either the crankshaft or the camshafts, when the timing chains are removed and the cylinder heads are installed. Severe piston and valve damage will occur.

NOTE: The number one cylinder is at top dead center (TDC) when the stud on the engine block fits into the slot in the handle of the special tool.

Using the special tool, position the crankshaft so the number one cylinder is at TDC.

7. Remove the Crankshaft Holding Tool.





8. Position the LH (inner) timing chain on the crankshaft sprocket, aligning the copper (marked) link with the timing mark on the sprocket.





9. Install the LH timing chain on the camshaft sprocket, aligning the copper (marked) link with the timing marks on the sprocket.





10. NOTE: The LH timing chain tensioner arm has a bump near the dowel hole for identification.

Position the LH timing chain tensioner arm on the dowel pin and install the LH timing chain tensioner.
^ Tighten to 25 Nm (18 ft. lbs.).





11. Remove the retaining clip from the LH timing chain tensioner.





12. Position the RH (outer) timing chain on the crankshaft sprocket, aligning the copper (marked) link with the timing mark on the sprocket.





13. Install the RH timing chain on the camshaft sprocket, aligning the copper (marked) link with the timing marks on the sprocket.





14. Position the RH timing chain tensioner arm on the dowel pin and install the RH timing chain tensioner.
^ Tighten to 25 Nm (18 ft. lbs.).





15. Remove the retaining clip from the RH timing chain tensioner.





16. Make sure that the copper (marked) chain links are lined tip with the dots on the crankshaft sprockets and the camshaft sprocket.





17. Remove the special tools from the camshaft.





18. Install the crankshaft sensor ring on the crankshaft.
19. Install the engine front cover.