WHEEL UNIT REMOVAL/INSTALLATION [DIRECT TIRE PRESSURE MONITORING SYSTEM (TPMS) (WITHOUT TPMS SET SWITCH)]

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Replacement part

Snap-In

Removal

1.  Remove the valve core and bleed the air from the tire.

2.  Break the upper/lower tire bead.

Note

•  There are 2 types of procedures for breaking the tire bead.

?  Method for rotating wheel against bead breaker (See Bead Breaking Note (Method for Rotating Wheel Against Bead Breaker).)

?  Method for securing wheel (See Bead Breaking Note (Method for Securing Wheel).)

3.  Remove the upper/lower bead using the following procedure.

(1)  Install the wheel and tire to the turntable of the tire changer.

(2)  Set the bead removal head to the position shown in the figure.

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Caution

•  Set the air pressure sensor to the position shown in the figure so that it does not get damaged.

(3)  Rotate the turntable and remove the upper bead.

(4)  Grasp the tire and slide it in the upward direction.

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(5)  Insert the tire lever as shown in the figure.

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(6)  Remove the lower bead.

Caution

•  To prevent damaging the air pressure sensor, do not allow the tire lever to contact the air pressure sensor.

4.  Remove the air pressure sensor from the wheel using the following procedure.

Caution

•  To prevent damaging the air pressure sensor, remove the sensor housing before pulling out the valve.

Note

•  Remove the air pressure sensor after the tire is completely removed from the wheel.

•  If there is dirt on the air pressure sensor, wipe it off.

(1)  Remove the screw.

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(2)  Remove the sensor housing.

(3)  Remove the tip of the valve.

(4)  Using the valve removal tool, pull the valve straight out of the wheel hole.

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Installation

1.  Apply soapy water to the area shown in the figure.

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Caution

•  To prevent damaging the air pressure sensor, do not soak it in water or spray water on it.

2.  Remove the cap.

3.  Insert the air pressure sensor valve into the wheel valve hole.

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4.  Install the valve removal tool to the air pressure sensor valve.

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5.  Pull the air pressure sensor valve straight out of the valve hole as shown in the figure and secure the air pressure sensor to the wheel.

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Caution

•  Pull the air pressure sensor valve straight out of the valve hole. If the air pressure sensor valve is pulled out in the wrong direction, excessive force could be applied to the valve and damage it.

•  To prevent air leakage, install the valve so that there is no gap between the tip of the valve and wheel.

•  To prevent damaging the air pressure sensor, do not apply impact to the wheel or pressure sensor.

Note

•  Install the air pressure sensor so that it does not contact the inner side of the wheel.

•  After applying soapy water, install within 5 min.

•  Install the air pressure sensor to a clean and dry wheel with no burrs/file scratches on the valve hole.

•  Do not use an air pressure sensor that has been damaged by being dropped from a 1 meter or more height.

•  Always install the valve cap except when pumping air, bleeding air, and checking air pressure.

6.  Verify that the air pressure sensor is installed parallel to the wheel as shown in the figure.

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7.  Apply bead wax to the tire bead area.

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8.  Install the tire to the wheel using the following procedure.

(1)  Install the wheel to the turntable of the tire changer.

(2)  Place the tire on the wheel.

Note

•  Verify the rotation direction of the tire.

(3)  Set the installation head to the location shown in the figure.

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Caution

•  Set the air pressure sensor to the position shown in the figure so that it does not get damaged.

(4)  Rotate the turntable and install the lower bead.

Note

•  If the upper bead slips on the wheel while installing the lower bead, stop rotating and install it again from the correct position.

(5)  Install the upper bead using the same installation procedure for the lower bead.

9.  Pump air into the tire.

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Bead Breaking Note (Method for Rotating Wheel Against Bead Breaker)

1.  Install the wheel and tire to the turntable of the tire changer.

2.  Set the bead breaker against the air pressure sensor as shown in the figure.

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Caution

•  Do not set the bead breaker outside of the area shown in the figure to prevent damaging the air pressure sensor.

3.  Rotate the wheel and break the upper/lower bead.

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Caution

•  Do not move the air pressure sensor outside of the area shown in the figure to prevent damaging the air pressure sensor.

Bead Breaking Note (Method for Securing Wheel)

1.  Install the wheel and tire to the bead breaker.

2.  Set the bead breaker against the air pressure sensor as shown in the figure.

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Caution

•  Do not set the bead breaker outside of the area shown in the figure to prevent damaging the air pressure sensor.

3.  Break the upper bead.

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4.  Break the lower bead.

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5.  When replacing a wheel unit (s), register the new wheel unit ID (s). (See WHEEL UNIT ID REGISTRATION [DIRECT TIRE PRESSURE MONITORING SYSTEM (TPMS) (WITHOUT TPMS SET SWITCH)].)

Clamp-In

1.  Remove in the order indicated in the table.

2.  Install in the reverse order of removal.

3.  Install the valve core and valve cap, fill the tire with air.

Caution

•  A direct TPMS wheel unit has an exclusive valve cap and valve core. Always install the direct TPMS exclusive valve cap and valve core. If a valve core other than the exclusive one is installed, the wheel unit could be damaged due to rust.

•  The wheel unit air pressure stem is made of aluminum and can be damaged. Do not tilt or use excessive side force when checking the air pressure or filling a tire with air. Some tire pressure gauges and air filling nozzles have extended tips, which could bend or break the air pressure stem of the wheel unit due to the added force they can apply.

•  Do not use a tire pressure gauge with an extended tip or air injector nozzle, because it will apply excessive force to the air pressure stem of the wheel unit.

4.  When replacing a wheel unit (s), register the new wheel unit ID (s). (See WHEEL UNIT ID REGISTRATION [DIRECT TIRE PRESSURE MONITORING SYSTEM (TPMS) (WITHOUT TPMS SET SWITCH)].)

Note

•  If the wheel unit is replaced with a new one, registration of the ID is necessary.

•  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-MDS.

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Valve Core Removal Note

1.  Remove the valve core of the wheel unit, and bleed the air from the tire.

Tire Removal Note

1.  Set the bead breaker at the position laterally opposed to the valve.

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2.  Break the bead loose.

Caution

•  Do not break the bead loose within the range of 300 mm {11.8 in} on each side of the valve. Otherwise, the wheel unit could be damaged.

3.  Break the bead loose on the other side of the wheel.

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Caution

•  Set the bead breaker at the position laterally opposed to the valve.

•  Do not break the bead loose within the range of 300 mm {11.8 in} on each side of the valve. Otherwise, the wheel unit could be damaged.

4.  Insert the tire lever at the point 40 mm {1.6 in} from the wheel unit in the direction that the tire changer turntable rotates.

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5.  Remove the bead from the wheel.

Note

•  Using the tire lever as a support will aid in preventing the tire changer arm from deviating from the point at which the bead is first broken.

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6.  For the other side, insert the tire lever at the point of 40 mm {1.6 in} from the wheel unit in the direction that the tire changer turntable rotates, and remove the bead from the wheel.

Tire Installation Note

1.  Set the tire at point A (200 mm {7.87 in} away from the valve hole), and install the tire.

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2.  Set the tire at point A (200 mm {7.87 in} away from the valve hole).

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Note

•  Using the tire lever as a support will aid in preventing the tire from deviating from point A.

3.  Install the tire.

Wheel Unit Component Installation Note

1.  Insert the valve into the wheel unit in the order shown in the figure.

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2.  Verify that the valve is installed into the wheel unit completely as shown in the figure.

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

4.  Temporarily tighten the valve nut by hand.

5.  Completely tighten the valve nut using a torque wrench.

Caution

•  Do not retighten the valve nut after it has been completely tightened.

Note

•  Hold the end of the wheel unit (points A and B) with your thumb and middle fingers so that the wheel unit does not rotate, and then hold the valve (point C) with your index finger so that the valve does not detach from the wheel unit.

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6.  Verify that the wheel unit component is correctly installed.

•  Both ends or one end of the wheel unit contacts the wheel as shown in the figure.

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•  The wheel unit does not exceed the rim height as shown in the figure.

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