TM  10-3930-643-34 HYDRAULIC  SYSTEM  TROUBLESHOOTING  AND  MAINTENANCE. 12-12. Lift Cylinder. (Sheet 5 of 10) DISASSEMBLY 28. 29. 30. 31. Using a scribe,   remove  preformed packing (36), ring (37) and rod seal (37a) from piston (44). Remove  and  discard  preformed  packing (38) and seals (39 and 40). Remove  preformed  packing  (41)  and rings (42 and 43). Discard preformed packing (41). Using an arbor press, a 7/16” socket and  socket  wrench  handle,  remove bushing  (46)  and  fitting  (47)  from cylinder  (48).   Discard  bushing  (46). Go to sheet 6 12-105