Rocker Arm Assembly: Service and Repair

Valve Rocker Arm and Valve Lash Adjuster Replacement

Tools Required
^ J 36660-A Torque Angle Meter
^ J 44222 Camshaft Sprocket Holding Tool

Removal Procedure





1. Remove the camshaft cover.
2. Remove the exhaust and the intake sprocket bolts.
3. Install the J 44222 onto the cylinder head and adjust the horizontal bolts into the camshaft sprockets in order to maintain chain tension and keep from disturbing the timing chain components.
4. Carefully move the sprockets with the timing chain off of the camshafts.

Important: Place the camshaft caps in a rack to ensure the caps are installed in the same location from which they were removed.

5. Remove the camshaft cap bolts.





6. Remove the camshaft caps.





7. Remove the camshafts.

Important: Once removed, place the valve rocker arms and valve lash adjusters in an organized order so the components can be installed into the original locations.





8. Remove the valve rocker arms.





9. Remove the valve lash adjusters.

Installation Procedure





1. Lubricate and fill the valve lash adjusters with engine oil.
2. Install the valve lash adjusters in their original locations.





3. Lubricate the valve rocker arm roller.
4. Install the valve rocker arms in their original locations.
5. Coat the camshaft journals with engine oil.





6. Install the camshafts to their original position

Notice: Refer to Fastener Notice in Service Precautions.





7. Install the camshaft caps onto their original journal.
^ Tighten the camshaft cap bolts to 12 Nm (106 inch lbs.).





8. Carefully move the camshaft sprockets back onto the camshafts and remove the J 44222.
9. Install the intake camshaft sprocket washer, and the bolt, and the exhaust camshaft actuator bolt.
^ Tighten the intake camshaft sprocket bolt the first pass 20 Nm (15 ft. lbs.).
^ Use the J 36660-A to tighten the intake camshaft sprocket bolt the final pass and additional 100 degrees.
^ Tighten the exhaust camshaft actuator bolt the first pass to 25 Nm (18 ft. lbs.).
^ Use the J 36660-A to tighten the exhaust camshaft actuator bolt a final pass an additional 135 degrees.
10. Install the camshaft cover.