TM 9-2815-225-34&P 3-51.  AIR COMPRESSOR REPAIR (Contd) LOCATION/ITEM ACTION REMARKS a.  Disassembly (Contd) 16. Two screws (40) Unscrew and remove plate (39) from housing (37). 17. Housing (37) Using a suitable ridge reamer, Make sure carbon deposits and remove any carbon deposits or ridges are removed before air worn ridges from top of compressor piston (29) is pushed cylinder. through cylinder of housing (37). 18. Piston (29) and connecting Push out through cylinder of rod (34) (assembled) housing (37). 19. Two retaining rings (30) Remove from piston (29).   Discard retaining rings (30) if damaged during removal. CAUTION Driving  piston  pin  from  piston  pin  bore  could  damage  piston.    If  piston  pin  cannot  be removed by hand pressure, place piston in hot water to expand piston pin bore and allow piston pin to be removed. 20. Piston pin (31) Remove by pushing through Use gloves if piston (29) has been connecting rod (34) and in hot water. piston (29) with hand pressure. 3-318