TM 9-2320-386-10 3-30 Change 1 3-9. WHEELS AND TIRES (Contd) (2) Installation. CAUTION When installing stud nuts, ensure that curved (ball seat) surface of nut is toward wheel to ensure proper seating. Failure to do this may result in damage to wheel NOTE • Nuts have left-hand threads on left wheel assembly and right- hand threads on right wheel assembly. Studs and nuts are stamped (L) left and (R) right. • Use jack handle as a prybar to raise wheel over wheel studs. • Do not remove wheel valve or counterweight if replacing wheel assembly with spare tire. Notify your supervisor. (a) Remove spare wheel from spare wheel carrier and install unserviceable wheel in carrier. Refer to task b. (b) Lift wheel assembly (5) and position on wheel studs (7) and (8). (c) Install and hand-tighten six wheel stud nuts (9) on wheel studs (7) and (8). (d) Lower wheel assembly (5) to ground. Refer to task c. (e) Using wheel stud nut wrench, tighten wheel stud nuts (9) alternately, in tightening sequence shown. (f) Install elbow (10) and adapter (11) on hollow wheel stud (8). (g) Connect tube (4) on adapter (11). NOTE Perform step h if wheel assembly is replaced with spare tire. (h) Install cap (9) (Appendix B, Item 10) on hollow wheel stud (8). (i) Install stone shield (12) on drive flange (6) and wheel assembly (5) with two nuts (3), lockwashers (2), and screws (1). NOTE • Have lockwasher replaced and stud nuts checked and tightened to specified torque by maintenance personnel as soon as possible. • Return unserviceable wheel and tire assembly to maintenance personnel for repair, replacement, or exchange. (3) Tire Gauging. WARNING Stand clear of tire while gauging and inflating. Injury or death to personnel may result from wheel components if tire explodes. (a) Remove tire inflation gauge (20) and hose (15) assembly (Appendix B, Item 4) from stowage compartment. (b) Start at one corner of vehicle and gauge all tires. Apply tire gauge air chuck (19) on wheel valve stem (18) and press down to read tire pressure on gauge dial (17).