TM  10-3930-643-34 HYDRAULIC  SYSTEM  TROUBLESHOOTING  AND  MAINTENANCE. 12-6. Tilt Valve Assembly. (Sheet 6 of 8) CLEANING/INSPECTION 25. Inspect  housing  (25)  surfaces  for burrs,  scratches  and  nicks  or  scores. Stone or lap all burrs. Use crocus cloth on small burrs. 26. Inspect all other parts. Refer to paragraph  2-9. ASSEMBLY NOTE Lubricate  all  preformed  packings, wipers,  seals,  sliding  parts  and housing  before  installing. 27. 28. 29. 30. 31, Install new preformed packing (42) and ring (41) on poppet (43). Install items 43 thru 41 as an assembly,  piston  (39)  and  spring (38) in poppet (40). Install items 43 thru 38 as an assembly in body (37). Install  ring  (35),  new  preformed packing  ((34),  poppet  (33)  and  spring (32) in plug (36). Install new preformed packing (31). Go to sheet 7 12-47