TM10-3930-660-20 13-3. WHEEL  ASSEMBLY  -  REPLACE/REPAIR This task covers: a. Removal b.  Installation Initial Setup Tools Tool Kit,  Automotive  Mechanics Materials/Parts Wood Blocks Shop Equipment, Automotive Personnel  Required Maintenance, Common #2 Less Power Two personnel Floor jack, 7,000 lb. capacity Jackstand, 7,000 lb. capacity Equipment  Condition Vehicle parked on level ground. 1. PLACE WHEEL CHOCKS ON TIRES (1) OF WHEEL ASSEMBLIES (2) THAT ARE NOT BEING REMOVED. Always place blocking material between rear axle housing (3) and frame rear axle housing stops (4) before raising vehicle with floor jack. If blocking material is not used, vehicle will tip to left or right when front axle housing is raised, possibly resulting in personal injury or damage to vehicle. In addition, if blocking material is not used, rear axle housing (3) will oscillate on its pivot pin when rear wheel assembly is removed, possibly resulting in personal injury or damage to vehicle. 2. PLACE BLOCKING MATERIAL BETWEEN REAR AXLE HOUSING (3) AND BOTH FRAME REAR AXLE HOUSING STOPS (4). 3. LOOSEN BUT DO NOT REMOVE EIGHT wHEEL NUTS  (5). 13-2