10. After the beads are broken on divided (split) wheels, remove the nuts and bolts while the wheel assembly is mounted on the machine. DISMOUNTING DIVIDED (SPLIT) WHEELS.—The tire bead should be broken away from the wheel and the nuts and bolts removed according to the bead-breaking procedure. If the tire has a tube, remove the hex nut and push the valve away from the seated position. This will prevent damage to the inner tube valve attachment when you break the tire bead loose. Then, remove the wheel assembly from the tire. If the tire is tubeless, remove the wheel seal carefully from the wheel half and place it on a clean surface. Wheel seals in good condition may be reused if replacement seals are not available. If the tire has a tube, remove it. Inner tubes can be reused if they are in good condition and less than 5 years old. DISMOUNTING REMOUNTABLE FLANGE WHEELS.—The tire bead should be broken away from the wheel according to the bead-breaking procedure. If the tire has a tube, you should remove the hex nut and push the valve away from the seated position. This will prevent damage to the inner tube valve attachment when you break the bead. If you have trouble removing the flange while the wheel is mounted on the bead-breaking machine, remove the tire from the machine. Lay the tire and wheel assembly flat with the demountable flange side up. Drive the remountable flange down by tapping it with a rubber, plastic, or rawhide-faced mallet. This should enable you to remove the locking ring. CAUTION Extreme care must be taken when you break the beads loose and remove the lockring on some remountable flange wheels. The toe of the remountable flange may extend very close to the tube valve stem. Excessive travel of the remountable flange or of the tire bead may damage the rubber base of the inner tube valve. If the tire is tubeless, remove the wheel seal carefully and place it on a clean surface. Wheel seals in satisfactory condition maybe reused if replacement seals are not available. Turn the tire and wheel assembly over and lift the wheel out of the tire. Remember to keep the wheel flange and locking ring together as a unit to avoid mismatch during remounting. Mounting Prior to mounting a tire on a wheel, you should inspect the tire and ensure the inside of the tire is free of foreign materials. The inner tube must be inspected for bead chafing, thinning, folding, surface checking, heat damage, fabric liner separation, valve pad separation, damaged valves, leaks, and other signs of deterioration. MOUNTING DIVIDED (SPLIT) WHEELS.— All wheel halves should be matched by year and month of manufacture as closely as possible. Wheel assemblies received from overhaul that have matching overhaul dates on both rims should be maintained as matched assemblies. In the event a wheel assembly is received or made up of wheel halves having different overhaul dates, the wheel overhaul should be based upon the earlier date. All wheels shouId fit together easily. When you mount a tube tire, dust the tube with talcum powder and insert it in the tire. The tire should be positioned so the balance marker on the tube located next to the balance marker on the tire. NOTE: The balance marker on an inner tube is a stripe of contrasting colors approximately 1/2 inch wide and 2 inches long. It is located on the valve side of the tube. The balance mark on a tire is a red dot approximately one-half inch in diameter. It is located on the sidewall near the bead. is You should inflate the tube until it is round, and then place the valve-hole half of the wheel into position in the tire. Push the valve stem through the hole. Finally, insert the other half of the wheel and align the bolt holes. NOTE: All bolts must be magnetic particle inspected to ensure they are not defective. Install four bolts, nuts, and washers 90 degrees apart. Start the bolts by hand, and tighten them evenly until the wheel halves seat. Install the remaining bolts, nuts, and washers. Tighten the bolts in a crisscross order to prevent distorting the wheel or damaging the inserts.    A pneumatic-powered impact wrench may be used, provided the torque obtained does not exceed 25 percent of the specified final 11-21