TM 9-2320-364-102-818 2-58. TRUCK PREPARATION FOR TRANSPORT (CONT).c.Truck Preparation for Air Transport.Tire assembly is very heavy 500 lb. (227 kg). Do not try tolift or catch tire assembly. Injury to personnel could result.NOTEUnit Maintenance must remove the machine gun mountprior to air transport.(1)Remove spare tire (1) (Para 3-5). Roll tire to back of truck and lay it downflat with valve stem facing up.(2)Remove safety pin (2) and pin (3) from tire davit (4).