Cummins — CYLINDER HEAD - GENERAL INFORMATION

Section 2 - Cylinder Head - Group 02 Cylinder Head - Rebuild (2-02) M11 Page 2-9 Install a wood block between the valves and head holding fixture to support the valves. Use the valve spring compressor, Part No. ST-448, the compressor threaded adapter, Part No. 3376850, and the compressor adapter, Part No. 3376851, to compress the valve springs. Use a pencil magnet to remove the valve collets. Discard the valve collets. Slowly release the pressure on the valve spring. Remove the valve spring retainer. Remove the valve spring. Remove the valve spring wear plate. Remove the valve. Mark the valves with an electric pencil (engraving tool) for location as they are removed. NOTE:

The intake and exhaust valves are manufactured from different materials and are not interchangeable. Repeat the procedure to remove the remaining valve col- lets, retainers, springs, wear plates and valves.