Timing Components: Service and Repair

Timing Drive Components

Removal

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

1. Remove the engine front cover.
2. Remove the roller followers.





3. Remove the crankshaft sensor ring from the crankshaft.





4. NOTE: Notice where the timing marks are in relation to the camshaft keyways.

Rotate the crankshaft until both camshaft keyways are 90 degrees from the valve cover surface.





5. Remove the (A) bolts and the (B) LH timing chain tensioner.





6. Remove the (A) bolts and the (B) RH timing chain tensioner.





7. Remove the LH and RH timing chain tensioner arm from the dowel pins.
8. Remove the timing chains and crankshaft sprockets from the camshafts and crankshaft.





9. Remove the timing chain guide
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: The timing chain procedures must be followed exactly or damage to valves and pistons will result.

CAUTION: Do not compress the ratchet assembly. This will damage the ratchet assembly.

Compress the tensioner plunger, using an edge of a vise.





2. Using a small screwdriver or pick, push back and hold the ratchet mechanism.





3. While holding the ratchet mechanism, push the ratchet arm back into the tensioner housing.





4. Install a paper clip into the hole in the tensioner housing to hold the ratchet assembly and plunger in during installation.





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





6. Install the timing chain guide.
1. Position LH timing chain guide.
2. Install and tighten the bolts.
3. Position the RH timing chain guide.
4. Install and tighten the RH bolts.





7. Install the timing chain, camshaft sprockets, and the crankshaft sprockets.





8. Make sure that the (A) copper marks on the timing chain/belt are lined up with the corresponding dots on the crankshaft sprockets and the camshaft sprocket.





9. Make sure that the (A) camshaft sprocket keyway is 90 degrees from the (B) valve cover mounting surface.





10. Position the LH and RH timing chain tensioner arms on the dowel pins.





11. Position the RH timing chain tensioner and install the bolts.





12. Position the LH timing chain tensioner and install the bolts.





13. Remove both the RH and LH retaining pins from the timing chain tensioner.





14. Install the crankshaft sensor ring on the crankshaft sprocket.
15. Install the engine front cover.
16. Install the roller followers.