Issue link: http://read.dmtmag.com/i/34501
DEMOUNTING OF TUBELESS TIRES 1. If still fitted on the vehicle, completely deflate the tire by removing the valve core. In the case of a dual assembly, completely deflate both tires before removing them from the vehicle (OSHA requirement). Run a wire or a pipe cleaner through the valve stem to ensure complete deflation. 2. With the tire assembly lying flat (after deflating the tire), break the bead seat of both beads with a bead breaking tool. Do not use hammers of any type to seat the bead. Striking a wheel/rim assembly with a hammer of any type can damage the tire or wheel and endanger the installer. Use a steel duck bill hammer only as a wedge. Do not strike the head of a hammer with another hard faced hammer – use a rubber rim mallet. 3. Apply the vegetable-based lubricant to all surfaces of the bead area of the tire. 4. Beginning at the valve, remove the tire from the wheel. Starting at the valve will minimize chances of damaging the valve assembly. Make certain that the rim flange with the tapered ledge that is closest to the drop center is facing up. Insert the curved ends of the tire irons between the tire and rim flange. Step forward into the drop center and drop the bars down, lifting the tire bead over the rim flange. Hold one tire iron in position with your foot. Pull the second tire iron out and reposition it about 90 degrees from the first iron. Pull the second tire iron towards the center of the wheel. Continue to work tools around rim until first bead is off the rim. 5. Lift the assembly, place and rotate the tire iron to lock on the back rim flange, allow the tire to drop, and with a rocking motion remove the tire from the rim. 1 Use a Slide Hammer. Or a duck bill hammer as a 2 wedge, with a rubber rim mallet. Lubricate both beads completely 3 to avoid demount damage. Never inflate or re-inflate any tires that have been run underinflated or flat without careful inspection for damage, inside and out. 28 Section Two: Mounting the Tire