R 408.17237 Single-piece rim wheels.

Rule 7237. (1) Subrules (2) to (8) of this rule apply to the servicing of single-piece wheel rims used on vehicles such as trucks, trailers, buses, and off-road machines which have a tire inflation pressure that is 45 psig or greater. Subrules (2) to (8) of this rule do not apply to single-piece rim wheels used on automobiles and light-duty trucks or vans utilizing automobile tires. (2) A rim manual, as prescribed in R 408.17206(2), which contains instructions for the types of wheels serviced shall be available in the service area. (3) The size and type of both the tire and the wheel shall be checked for compatibility before assembly of the rim and wheel. (4) Mounting and demounting of the tire shall be done only from the narrow ledge side of the wheel. Care shall be taken to avoid damaging the tire beads while mounting tires on wheels. (5) If a bead expander is used to seat the beads, it shall be removed before the tire is inflated to more than 10 psig (.7031 Kg/cm). (6) To seat the bead while the rim wheel is restrained on a tire changing machine, the tire shall not be inflated to more than the operating pressure indicated on the tire or the posted capacity of the machine, whichever is the lesser. If, during inflation, the tire beads do not progress toward the flanges in a normal manner or are not fully seated by the time the tire is inflated to its designated operating pressure, the tire shall be deflated and the rim wheel disassembled. The wheel and tire shall be rechecked for compatibility, relubricated, repositioned, and then reinflated in accordance with this rule. (7) A tire inflated in accordance with subrule (3) of this rule which reaches the tire changing machine's posted capacity before becoming inflated to its designated operating pressure or which has to be inflated in excess of its operating pressure to fully seat shall be placed in a restraining device positioned behind a barrier or shall be bolted on the vehicle, with lug nuts fully tightened. (8) Employees shall stay out of the potential trajectory of the wheel when inflating a tire and shall not lean or place a rim wheel on or against any flat solid surface.