Exhaust Camshaft and Valve Lifter Replacement

Exhaust Camshaft and Valve Lifter Replacement

Removal Procedure

1. Remove the exhaust camshaft position actuator. Refer to Camshaft Position Exhaust Actuator Replacement Camshaft Position Exhaust Actuator Replacement.





2. Remove the exhaust camshaft position actuator solenoid valve bolt (1) and valve (2).





Note:
Remove each bolt on each cap one turn at a time until there is no spring tension pushing on the camshaft.

3. Mark camshaft caps to ensure they are installed in the same position.

4. Remove the exhaust camshaft cap bolts.

5. Remove the camshaft caps ensuring they are marked and refitted in same position on assembly.

6. Remove the exhaust camshaft.





Note:
Keep all of the roller finger followers and hydraulic lash adjusters in order so that they can be reinstalled in their respective locations.

7. Remove the exhaust camshaft roller finger followers.





8. Remove the hydraulic lash adjusters.

Installation Procedure





1. Install the hydraulic lash adjusters into their bores in the cylinder head and lubricate. Refer to Adhesives, Fluids, Lubricants, and Sealers Adhesives, Fluids, Lubricants, and Sealers.





2. Lubricate the valve tips. Refer to Adhesives, Fluids, Lubricants, and Sealers Adhesives, Fluids, Lubricants, and Sealers.





Note:
Used roller followers must be returned to the original position on the camshaft. If the camshaft is being replaced, the roller followers actuated by the camshaft must also be replaced.

3. Position the roller followers on the tip of the valve stem and on the lash adjuster and lubricate. Refer to Adhesives, Fluids, Lubricants, and Sealers Adhesives, Fluids, Lubricants, and Sealers.





Note:
The engine is timed top-dead center exhaust stroke.

4. When installing the camshafts, ensure the intake camshaft notch is in the 10 o'clock position (2) and the exhaust camshaft notch is in the 7 o'clock position (1). The number 1 piston should be at top dead center (TDC), crankshaft key at 12 o'clock.





5. Set the exhaust camshaft on top of the roller followers in the camshaft bearing journals and lubricate. Refer to Adhesives, Fluids, Lubricants, and Sealers Adhesives, Fluids, Lubricants, and Sealers.





6. Rotate the oil seal in the groove of the number one camshaft journal so the split line (1) is at approximately the 12:00 position before installing the camshaft caps.





7. Install the exhaust camshaft with the notch on the front (1) at approximately the 7 o'clock position.

8. Install the camshaft caps and hand start the camshaft cap bolts.

Caution:
Refer to Fastener Caution Fastener Caution.

9. Tighten the camshaft cap bolts in increments of 3 turns until they are seated. Tighten the camshaft caps to 10 Nm (89 lb in).





10. Install the exhaust camshaft position actuator solenoid valve (2). Tighten the solenoid valve bolt (1) to 10 Nm (89 lb in).

11. Install the exhaust camshaft position actuator. Refer to Camshaft Position Exhaust Actuator Replacement Camshaft Position Exhaust Actuator Replacement.