Service Tools - Cylinder Head Section 2 - Cylinder Head - Group 02 M11 Page 2-2 Service Tools - Cylinder Head The following special tools are recommended to perform procedures in Group 02. The use of these tools is shown in the appropriate procedure. These tools can be purchased from your local Cummins Authorized Repair Location. Tool No. Tool Description Tool Illustration Valve Seat Insert Tool ST-257 Cut valve seat counterbores for oversize valve seat inserts. Used with valve guide set, Part No. ST-804, and valve guide insert cutter, Part No. 3376595. Valve Spring Compressor Used with threaded adapter, Part No. 3376850, and adapter, Part No.
3376851, to compress the valve spring while removing or installing the valve collets. ST-448 Head Holding Fixture Hold and revolve the cylinder head during repair and assembly. ST-583 Valve Seat Grinding Machine Grind the valve seats in the cylinder head. Used with valve guide arbor set, Part No. ST-804, and valve seat grinding wheel, Part No. 3376077. ST-685 Valve Guide Arbor Set Used with valve seat insert tool, Part No. ST-257, and valve seat grinding machine, Part No. ST-685. ST-804-1 Arbor (3/8 in. + .006 in.) ST-804-2 Arbor (3/8 in. + .007 in.) ST-804 Fuel Passage Cleaning Brush ST-876 Clean the internal fuel passages in the cylinder head.