Return to Master Table of Contents 13. Find a screwdriver with an appropriate width tip to facilitate removal of slipper seal (19), wear ring (18) and slide ring (17) from piston (16). 14. Pull off O-ring (20) and backup ring (21) from cylinder head. Figure 20 HAOF38OS Figure 21 15. During disassembly of cylinder head, be careful not to damage buffer seal (5) and U-packing (4). HAOF39OL Figure 22 S0705000 Page 14 Cylinders