TM  10-3930-643-34 BRAKE  TROUBLESHOOTING  AND  MAINTENANCE. 8-14. Air Compressor. (Sheet 4 of 13) DISASSEMBLY 18. Clamp piston (27) bottom side up in soft-jawed  vise. 19. Insert pointed tool in hole on bottom side of pin (25). 20• Press downward to force end of lockwire (24) out of hole. 21• Using long round nose pliers, remove lockwire (24) through bore of piston (27). 22. Using a flat punch and hammer, remove pin (25) and connecting rod (26). 23. Using a flat punch and hammer, remove and  discard  bushing  (28)  from connecting rod (26). NOTE Disassembly procedure for second connecting  rod  and  piston  assembly is identical. Go to sheet 5 8-65