MAJOR SAFETY FACTORS WHEN WORKING ON TIRES AND RIMS

An inflated tire can be very dangerous; under pressure it packs the explosive force of dynamite.
Check to make sure the valve stem is not plugged by running a piece of wire through the stem.
A broken rim part under pressure could blow apart and kill the person the moment the lugs on
dual assemblies are removed.
Regardless of how hard or firm the ground appears, put hardwood blocks under the jack.
Use a clip-on chuck and extension hose that is long enough to allow you to stand to one side and not in front of the assembly during inflation.

Carefully clean all dirt and rust from the lock ring gutter so the lock ring can be secured in its
proper position. Inspect the rim and base and lock ring gutter for cracks. Cracked, damaged, or
sprung rim bases or lock rings should be replaced.
Block the tire and wheel on the other side of the vehicle before you place the jack in position;
always crib up with blocks just in case the jack may slip.
Remove the bead seat band slowly to prevent it from dropping off and crushing your toes.
Support the band on your thigh and roll it slowly to the ground. This will protect both your back and toes.

Bead breakers and rims apply pressure to bead flanges. Keep your fingers clear. Slant bead
breaker approximately 10 degrees to keep it firmly in place. If it slips it can fly off with enough force to injure or kill a person. Always stand to one side when applying hydraulic pressure.
When using a cable or chain sling, stand clear; it might snap and lash out.
When lock rings are tapped with a hammer during the first part of inflation, stand to one side
when swinging the hammer. If the lock ring should blow off, it and other parts could fly off with enough force to injure or kill a person.
Do not mix rim parts of different brands. Never try to use the wrong size rim flange. Never use
bent, chipped or broken rim parts. They are dangerous and can injure or kill.
Do not, under any circumstances, attempt to rework, weld, heat, or braze wheel parts. Always
replace with new parts of the same size, type, and make.

Spare tires mounted on demountable rims should only have enough air pressure to keep the rim parts in place. Never transport a fully inflated tire. Inflate tires to correct operating pressure after the tire and rim assembly have been fastened in place with all lug nuts properly torqued.