Removal and Fitting of Tubeless Truck Tyres

Removal

• Tools required: 2 tyre levers, mole wrench, fitting lubricant, fitting mat and bead breaker.
• Screw out the valve core and deflate the tyre.
• If necessary, use a bead breaker to unseat both beads and lubricate generously (fig 2).
• Rest wheel on the fitting mat, the narrow shoulder being upper-most.
• Lever the upper bead over the flange with the angled ends of the two tyre levers. Ensure That the bead slips into the well of the rim on the diametrically opposite side (fig 3).
• To remove the second bead, turn the wheel over with broad shoulder uppermost.
• Using the flange ends of the two tyre levers, lever the bottom rim flange out of the bead (fig 4).

Fitting

• Clean the shoulder area of the rm thoroughly as well as both beads of the tyre and lubricate (fig 5).
• Check correct valve fitting.
• Rest the rim on the clean fitting mat, ensuring that the narrow shoulder is uppermost.
• Position the tyre on the rim, pressing the lower bead into the rim with hands and knees. Complete the fitting using a tyre lever (figs 6 and 7)
• Starting opposite the valve fit the upper bead. Prevent the bead from slipping out of the well by fixing the mole wrench onto the flange 90 degrees from the valve. Use tyre levers to complete the fitting (fig 8).

Inflating

• Screw out valve core.
• Stand the wheel and tyre in an upright position, using a safety cage.
• Connect air line and inflate to approximately 70 kPa. This will facilitate positioning of the tyre on the rim and ensure a good air seal.

If inflation of the tyre is difficult, roll it along the ground without disconnecting the air line. Screw the valve core in and inflate the tyre to the correct service pressure, keeping in mind the usual safety precautions.