TM 10-3930-659-20 22-8. PREPARATION OF EQUIPMENT FOR AIR SHIPMENT (Con’t). 5. Remove latch rod (12) from catch (13). 6. Remove 22 screws (18) from upper cab (14). 7. Raise on-board crane to highest position and install hook on cab lifting bracket (see TM 10-3930-659-10). 8. Remove eight screws (17) and washers (16) from four corner post joints (15). 9. Adjust  steering  wheel  to  rearmost  position,  set  driver's  seat  to  lowest  position,  and  tip  driver's  seat  backrest cushion forward (see TM 10-3930-659-10). WARNING Use  extreme  caution  when  handling  heavy  parts.    Lifting  device  Is  required when parts weigh over 50 lb (23 kg) for a single person lift, over 100 lb (45 kg) for  a  two  person  lift,  and  over  150  lb  (68  kg)  for  a  three  or  more  person  lift. Keep clear of heavy parts supported only by lifting device.  Failure to follow this warning may cause serious Injury or death to personnel. 10. Using wrecking bar and on-board crane, remove upper cab (14) from lower cab (8).  Lift upper cab until clear of steering wheel. 11. Move upper cab (14) over left side of forklift truck and lower to ground. 22-8