Tools Required

J 43655 Camshaft Sprocket Holding Tool

Important: The J 43655 Camshaft Sprocket Holding Tool must be used to remove one or both camshafts at the same time. The engine's crankshaft can not be rotated with the camshafts removed.

The L61 engine camshafts, rocker arms, valve lash adjusters, valve springs, and seals can be serviced without removing the exhaust system, vibration damper, front mount, or front cover. The following procedure must be followed to prevent damage to the camshafts, lash adjusters, cylinder head, and lower timing chain guides.

1. Remove the camshafts. Refer to Camshaft Cover Replacement .
2. Remove the rocker arms.



3. Remove the valve lash adjusters.

1. Install the valve lash adjusters.



2. Install the rocker arms.




Notice: After cylinder block, head, or lifter replacement, it will be necessary to allow the engine to idle for 3-5 minutes. If the lifters are noisy, warm the engine up at less than 200 RPM. After the coolant temperature has reached approximately 85°C (185°F), cycle the engine RPM from idle to 300 RPM for approximately 10 minutes or drive the vehicle 8 kilometers (5 miles) to purge the air. If the air cannot be purged, the faulty lifters will have to be replaced.

3. Install the camshafts. Refer to Camshaft Cover Replacement .