TM 10-3930-643-34 STEERING  TROUBLESHOOTING  AND  MAINTENANCE.  (cont) 9-7. Steering  Circuit  Relief  Valve.  (Sheet ADJUSTMENT  (cont) NOTE Turn screw clockwise to increase pressure: counterclockwise to decrease  as  necessary. 26. 27. 28. 29. Using an 11/16"   socket,  socket  wrench handle, torque wrench and flat tip screwdriver, tighten nut (4) to 10 lb-ft  while  holding  screw  (6),  after obtaining  proper  pressure  setting. Using an 11/16" open end wrench, install  new  preformed  packing  (3)  and nut  (2). Remove pressure gage. Using a 5/8"   socket  and  socket  wrench handle,  install  new  preformed  packing (21) and plug (20). NOTE Return M10A Forklift to original equipment  condition. 7 of 7) END OF TASK 9-58