User manual BONTRAGER TUBELESS

[. . . ] A properly mounted tubeless tire will `bleed' air, up to 4 PSI (0. 25 ATM) per day. If a tubeless tire loses air faster than 4 PSI (0. 25 ATM) make sure the valve nut is tight, check for punctures, and make sure all sealing surfaces are smooth and clean. The sealing surfaces include the tire to rim contact, the tire to rim strip contact, the valve stem to rim strip contact, and the rim strip to rim contact. [. . . ] If either surface is damaged, the roughened surface may allow a greater rate of air to bleed from the mounted tire. WARNING Install the valve stem. Align the slot on the head of the special tubeless valve with the rim (Fig. Make sure the rim strip lies centered in the rim well, with no wrinkles or unevenness. Presta nut Tubeless valve nut Slot Make sure the rim strip covers all of the spoke holes or spoke heads. If they are exposed they may allow air loss, or puncture the inner tube, and may cause loss of control resulting in personal injury. With the bead on top of the valve, some slack will be taken up which is needed to lift the tire bead over the rim shoulder (Fig. 2). Note: If desired, the tire bead can be lubed with soapy water to aid in tire installation and seating of the bead. Before installing the last 10 inches (25cm) of the second bead, pivot the beads so the second bead is at the bottom of the rim well. With the additional slack afforded by this bead placement, finish installing the second bead until it is completely in the rim well. Inflate the tubeless tire Too tight Note: If you choose to use tools to mount the tire, be careful not to mar the rim or abrade the tire as this could reduce the required ability of the rim to seal to the special beads of a tubeless tire. Tip: During initial inflation it may be helpful to hold both beads, adjacent to the valve stem, up and out of the center channel with your fingers. This will help remove any gaps between the tire beads and rimstrip. 1. Initially, its best to inflate the tubeless tire as rapidly as possible. With the tire beads sealed to the rim hook, inflate the tire to about 60PSI (4 ATM) until the tire beads lock into the rim well (Fig. Visually check that the beads are seated correctly in their locked position(Fig. Most tires have lines or marks running around the casing, just above the bead. When correctly installed, these lines are at an even distance from the rim. When the beads are correctly seated all around the rim, inflate (or deflate) to the desired pressure. Fig. 2 Failure to maintain a minimum tire inflation of 30PSI (2ATM) may result in rapid deflation causing a loss of control resulting in personal injury. Bead lock WARNING Fig. On tubeless compatible rims the bottom of the well is too narrow for both beads to rest fully against the rim bottom at the same time, so the tire must be placed to get one bead down. [. . . ] Be careful not to mar or damage the rim, or rim strip, with the tire lever. Continue to roll the rim strip up and out of the rim as you work your way fully around the rim. Make sure the rim strip is in good condition, with no tears, holes, or deformed areas near the valve hole or to be along its edges. [. . . ]