Issue link: http://read.dmtmag.com/i/34501
WHEEL TYPE Refer to MICHELIN X One Truck Tire Service Manual (MWL43101) for proper fasteners and procedures for MICHELIN ® ® ® X One tire fitments. Before servicing any truck wheel, it is essential to know the type of mounting system you will be working on. Three basic types of mounting systems are commonly used on commercial vehicles in North America. See TMC RP 217B, Attaching Hardware for Disc Wheels, for more detailed information on fasteners. Hub Piloted Disc Wheels Hub Piloted Disc Wheels are designed to center on the hub at the center hole or bore of the wheel. The wheel center hole locates the wheel on pilots built into the hub. Hub piloted wheels are used with two-piece flange nuts, which contact the disc face around the bolt hole. Only one nut on each stud is used to fasten single or dual wheels to a vehicle. All stud and nut threads are right hand. Hub piloted wheels have straight through bolt holes with no ball seat, which provides a visual way of identifying them. Hub Piloted Wheel Drum Two-Piece Flange Nut Hub Stud Stud Piloted Disc Wheels Stud Piloted Disc Wheels are designed to be centered by the nuts on the studs. The seating action of the ball seat nuts in the ball seat bolt holes centers the wheels. Stud piloted dual wheels require inner and outer cap nuts. Fasteners with left hand threads are used on the left side of the vehicle and those with right hand threads are used on the right side of the vehicle. Stud Piloted Wheel Drum Hub Outer Cap Nut Stud Inner Cap Nut Cast Spoke Wheels Cast Spoke Wheels consist of a metal casting that includes the hub with spokes, either 3, 5, or 6. Demountable rims are attached to this axle component with clamps. Each cast spoke wheel requires specific clamps designed for that wheel. The cast spoke wheel with brake drum and clamps for rear axles requires a spacer band to hold the two rims apart and provides for proper dual spacing. Proper torque is 210-260 lb/ft. 5 Spoke Cast Spoke Wheel With Brake Drum and Clamps for Rear Axles 126 Section Nine: Appendix 5 Spoke Cast Spoke Wheel With Clamps, Without Brake Drum for Front Axles