Timing Components: Service and Repair

Removal

1. Remove the engine front cover. Service and Repair






2. Remove the ignition pulse ring.






3. Reinstall the crankshaft damper bolt and washer.






4. CAUTION:Rotating the crankshaft in a counterclockwise direction may cause engine damage. Crankshaft journals are directionally machined. Rotating the crankshaft counterclockwise can raise burrs on bearing surfaces, reducing engine life.

Rotate the crankshaft clockwise to position the crankshaft keyway to the nine o'clock position.






5. CAUTION:If the RH timing chain tensioner arm and RH chain guide are to be reused, mark the position of each piece to make sure that they are installed on the correct side when reassembled.

Install a stiff wire or paper clip into the RH timing chain tensioner before removing the bolts.






6. Remove the bolts, the timing chain tensioner and the tensioner arm.

7. Remove the RH timing chain.






8. Remove the bolts and the RH timing chain guide.






9. CAUTION:If the LH timing chain tensioner arm and the LH chain guide are to be reused, mark the position of each piece to make sure that they are installed on the correct side when reassembled.

Install a stiff wire or paper clip into the LH timing chain tensioner.






10. Remove the bolts, the timing chain tensioner and the tensioner arm.






11. Remove the bolts and LH chain guide.

12. Remove the LH timing chain.

Installation






1. CAUTION:Rotating the crankshaft in a counterclockwise direction may cause engine damage. Crankshaft journals are directionally machined. Rotating the crankshaft counterclockwise can raise burrs on bearing surfaces, reducing engine life.

Verify that the crankshaft keyway is in the nine o'clock position.






2. CAUTION:The crankshaft keyway must remain in the nine o'clock position until the cams are located, or damage to the valves may occur.

Rotate the LH and RH intake and exhaust camshafts to locate them in their neutral positions.





3. Position the LH chain tensioner in a soft-jawed vise.






4. Hold the chain LH tensioner ratchet lock mechanism away from the ratchet stem with a small pick.

5. CAUTION:During tensioner compression, do not release the ratchet stem until the tensioner piston is fully bottomed in its bore or damage to the ratchet stem will result.

Slowly compress the LH timing chain tensioner.






6. Note: The wire must remain in the timing chain tensioner until the tensioner is installed.

Retain the LH tensioner piston with a 1.5 mm (0.06 inch) wire or paper clip.






7. Rotate the crankshaft clockwise to position the keyway to the 11 o'clock position and remove the crankshaft damper bolt and washer.






8. Install the LH timing chain guide.
1 Position the guide to the engine.
2 Install the shorter (gold color) bolt into the upper hole.
3 Install the longer bolt (black color) into the lower hole.






9. Install the LH timing chain, aligning the timing index link (gold color) with the marks on the camshaft and crankshaft sprockets.






10. Note: Be sure to position the tensioner so that the tensioner piston is fully engaged in the tensioner arm.

Install the LH tensioner arm, tensioner and bolts.






11. Remove the wire or paper clip from the tensioner.






12. Rotate the crankshaft clockwise and position the keyway between the two o'clock and three o'clock positions for RH timing chain installation.






13. Verify that the timing index links (gold color) on the LH timing chain are in alignment with the timing index marks on the camshaft and crankshaft sprockets.






14. Position the RH chain tensioner in a soft-jawed vise.






15. Hold the RH chain tensioner ratchet lock mechanism away from the ratchet stem with a small pick.

16. CAUTION:During tensioner compression, do not release the ratchet stem until the tensioner piston is fully bottomed in its bore or damage to the ratchet stem will result.

Slowly compress the RH timing chain tensioner.






17. Note: The wire must remain in the timing chain tensioner until the tensioner is installed.

Retain the RH tensioner piston with a 1.5 mm (0.06 inch) wire or paper clip.






18. Install the RH chain guide and bolts.






19. Install the RH timing chain, aligning the timing index links (gold color) with the marks on the camshaft and crankshaft sprockets.






20. Install the RH tensioner.
1 Position the tensioner arm.
2 Position the tensioner.
3 Install the bolts.






21. Remove the wire or paper clip from the RH tensioner.






22. Verify that the timing index links (gold color) on the RH timing chain are in alignment with the timing index marks on the camshaft and crankshaft sprockets.






23. Remove the bolt and washer.






24. Install the ignition pulse ring.

25. Install the engine front cover. Service and Repair