Camshaft Carrier Assemble

Special Tools 

EN-46122  Camshaft Position Actuator Check-Ball Valve Remover/Installer

For equivalent regional tools, refer to Special Tools (LGX)Special Tools (LF4) .

Fig 1: Camshaft Position Actuator Oil Feed Check Valves
Courtesy of GENERAL MOTORS COMPANY
1. Use lubricant included with EN-46122  remover/installer to lubricate outside of new check valve (1).
2. With the check ball end of the check valve facing UP, away from the head, insert the NEW check valve into the check valve bore in the cylinder head.
Fig 2: Installing Camshaft Carrier Check Valves
Courtesy of GENERAL MOTORS COMPANY
3. Place collar EN-46122-2  (1) over the new check valve with the slightly-larger inside diameter of the collar DOWN toward the cylinder head.
4. Using the driver EN-46122-1  (2), lightly tap the new check valve into place until the driver stops against the top of the collar.
Fig 3: Camshaft Position Actuator Oil Feed Check Valve Installed Depth
Courtesy of GENERAL MOTORS COMPANY
5. Inspect the camshaft position actuator oil feed check valves in order to ensure they are properly installed in the cylinder head. The camshaft position actuator oil feed check valve should be flush to.75 mm (0.0295 in) below the cylinder head deck surface (a).