TM 10-3930-643-34 HYDRAULIC  SYSTEM  TROUBLESHOOTING  AND 12-15. Fork  Position  Cylinders  (S/N DISASSEMBLY MAINTENANCE. 2000 and below). (Sheet 5 of 10) 17. 18. 19. 20. 21. 22. 23. Using a 14"   adjustable  wrench,  remove nut (25) from rod (37). Using  a  plastic  hammer,  remove  piston half (26) with attached parts. Remove  piston  half  (27)  and  preformed packing (28). Discard preformed packing  (28). Remove  and  discard  nylon  rider  (29), preformed  packing  (30)  and  nylon rider (31) from piston half (26). Remove bushing (32) from rod (37). Remove  and  discard  preformed  packing (33),  ring  (34)  and  preformed  packing (35 from bushing (32). Remove  and  discard  wiper  (36)  from rod (37). Go to sheet 6 12-136