Wheels: Service and Repair

WHEEL UNIT REMOVAL/INSTALLATION
1. Remove in the order indicated in the table.
2. Install in the reverse order of removal.
3. When replacing wheel unit (s), register the new wheel unit ID (s). (See Wheel Unit ID Registration) Wheel Unit ID Registration

Note:
^ If the wheel unit is replaced with a new one, the ID registration must be performed. When the ID registration is finished, the data for the new wheel unit is displayed on the M-MIDS.





Valve Core Removal Note
1. Remove the valve core of the wheel unit, and bleed the air from the tire.

Wheel Unit Removal Note
1. Push the tire valve completely into the tire.

Caution:
^ Breaking the tire bead with the wheel unit installed normally could damage the unit. Be sure to always push the wheel unit so that it is completely inside the tire to prevent any damage.

2. Position the shoe (bead breaker) of the tire changer 10-20 mm (0.40-0.78 in) from the outer edge of the wheel, and break both tire beads.
3. Remove the bead from one side of the wheel.
4. Remove the wheel unit.

Wheel Unit Installation Note





1. Insert the wheel unit valve into the valve hole so that the polyurethane foam side faces the rim.

Note:
^ Maintain the wheel unit in contact with the rim, then start manually to screw the valve nut for a few turns.

2. Tighten the valve nut slowly (15 rpm max.) to 8.0 N-m (82 kgf-cm, 71 in-lbf) in one rotation.

Caution:
^ Do not retighten the valve nut after the initial operation.





3. Install the nut from the outer side of the wheel.
4. Set the tire changer so that it is 45° away (point A) from the valve hole.

Caution:
^ Do not position the tire changer near the tire valve to avoid any damage to the wheel unit.

5. Fill the tire with air and verify the valve nut tightening torque.





Caution:
^ To prevent damage to the valve area of the wheel unit or charging loss during air pressure adjustment, use a type B tool with a round end as shown in the figure, not a type A tool.