Removal Procedure
- Remove the right camshafts. Refer to
Camshaft Replacement - Right Side
.
Important: If the followers are being reused, arrange them so that they may be
put back in their original locations.
- Remove the camshaft followers.
- Clean and inspect the rocker arms. Refer to
Valve Rocker Arms Cleaning and Inspection
in Engine Mechanical -
4.0 L Unit Repair.
Installation Procedure
- Apply a liberal amount
of lubricant GM P/N 12345001 or equivalent to the roller pivot
pocket (2) and valve slot areas (1) of the camshaft followers.
Important: The follower must be positioned squarely on the valve tip so that the
full width of the roller will completely contact the camshaft lobe. If the
followers are being reused you must put them back in their original location.
- Place the camshaft followers in position on the valve tip (1)
and the SHLA (1). The rounded head of the follower goes on the SHLA,
while the flat end goes on the valve tip.
- Install the right camshafts. Refer to
Camshaft Replacement - Right Side
.