Issue link: http://read.dmtmag.com/i/34501
TUBELESS TIRE MOUNTING/DEMOUNTING MOUNTING TUBELESS 1. Inspect the condition of the bolt holes on the wheels, and look for signs of fatigue. Check flanges for excessive wear by using the wheel manufacturer’s flange wear indicator. 4. With short ledge up, lay the tire over the rim opposite the valve side and work it on with proper tubeless tire tools, making full use of the drop center well. Drop center wheels are typically designed with an off-set drop center to accommodate wheel width and brake clearance. This creates a “short side” and a “long side” on the wheel. (Some drop center wheels are designed with a symmetric rim profile facilitating tire mounting from either side.) It is imperative that the tire always be mounted and dismounted only from the short side. Failure to do this will likely result in damaged tire beads that could eventually cause rapid air loss due to casing rupture. This is particularly important on 19.5 inch RW (reduced well) aluminum wheels which, contrary to the norm, have their drop center located close to the disc side. Do not use 19.5 x 7.50 rim for the 305/70R19.5 tire size. All 19.5 inch tubeless wheels should be mounted from the short side. Care should be taken to ensure that any internal monitoring system molded in the tire or on the rim is not damaged or dislodged during this service. 2. Replace valve core, and inspect valve stem for damage and wear. Michelin recommends always replacing the valve stem and using a new valve stem grommet. Ensure valve stem is installed using the proper torque value. 80-125 in/lbs (7-11 ft/lbs) for standard aluminum wheels and 35-55 in/lbs (3-5 ft/lbs) for standard tubeless steel wheels. Ensure the valve core is installed using the proper torque value of 1.5 – 4 in/lbs. To prevent galvanic corrosion on aluminum wheels, lubricate the threads and o-ring of the valve stem with a non-waterbased lubricant before installation. 3. Apply the tire and rim lubricant to all surfaces of the rim and bead area of the tire. When applying lubricant to the rim, lubricate the entire rim surface from flange to flange. The tire should be mounted and inflated before the lubricant dries. Section Two: Mounting the Tire 23