Issue link: http://read.dmtmag.com/i/34501
MOUNTING OF TUBE-TYPE TIRES USING MANUAL SPREADERS 1. Follow Steps 1 through 3 of the “Mounting of Tube- Type Tires.” However, before inserting the flap into the tire, position two bead spreaders in the following manner: a. Place the first at a 90° angle to the valve. (Flap is positioned between the spreader and the tube.) b. Place the second directly opposite the first. c. Spread the beads and insert the flap. d. Close the beads, remove spreaders. 2. Follow Steps 4 through 8 of the “Mounting of Tube-Type Tires.” MOUNTING OF TUBE-TYPE TIRES USING AUTOMATIC SPREADERS 1. Spread the tire beads. 2. Inflate the tube to approximately 3 psi. 3. Insert the tube into the tire. 4. Insert the valve through the flap valve hole. (As mentioned, the flap reinforced valve area must face outwards.) Insert the remainder of the flap into the tire. 5. Close the beads. 6. Apply a proper tire lubricant to the inside and outside surfaces of both beads and to that portion of the flap that appears between the beads. Make sure that excess lubricant does not run down into the tire. 7. Follow Steps 4 through 8 of the “Mounting of Tube- Type Tires.” 2. Deflate the tire by removing the air line. This is to allow the tube to relax, thus, eliminating any wrinkles or uneven stretching that may have occurred during primary inflation. 3. With the valve core still removed, place the dual Do not reinflate any tires that have been run underinflated or flat without careful inspection for damage. If run-flat damage is detected, scrap the tire. A tire is considered run-flat if it is found to be less than 80% of normal recommended operating pressure. and wheel assembly into an approved safety cage or other approved restraining device meeting OSHA (Occupational Safety and Health Administration) standards, and reinflate the tire to the pressure shown on the sidewall in order to ensure proper bead seating. Then adjust the tire to the proper operating pressure. Never stand over a tire or in front of a tire when inflating. Always use a clip-on valve chuck with an in-line valve with a pressure gauge or a presettable regulator and a sufficient length of hose between the clip-on chuck and in-line valve (if one is used) to allow the employee to stand outside the trajectory path when inflating. RMA (Rubber Manufacturers Association) requires that all steel sidewall radial tires are inflated without a valve core. 4. Reinspect the assembly for proper positioning and seating of all components. 5. Check for leaks, and install a suitable valve cap. 100 Section Seven: Diagonal (Bias or Cross) Ply and Tube-Type INFLATION OF TUBE-TYPE TIRES 1. An air line with an extension (30" minimum), in-line gauge, and a clip-on valve chuck should be used for inflation. Remove valve core and lay the assembly flat on the ground. Using an approved restraining device, inflate partially to seat beads to no more than 3 psi. While the tire is still in the restraining device, make sure all rim components are centered and locked properly. If not, the tire must be deflated, broken down, relubricated and reinflated. Do not attempt to seat the lock ring by means of a hammer.