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Kit contents may vary depending on sensor type (see paragraph 10.0) and brands.
25.2.
Sensor replacement
Installation and removal procedures vary slightly depending on sensor model.
A standard procedure for the valve-and-sensor assembly configuration (design 1,
paragraph 10) may be as follows:
1. loosen the retaining screw so the sensor can move freely.
2. unscrew the nut completely
3. remove valve body from its seat; the sensor must be free to move otherwise the
valve will not come off.
4. unscrew the retaining screw and remove valve body.
For incorporated sensors (design 2, paragraph 10), simply perform steps 2 and 3 of
the above procedure.
A standard procedure for the valve-and-sensor assembly configuration may be as
follows:
1. Obtain a complete replacement kit including TPM sensor and all other parts
(valve body, retaining screw, nut, valve cap).
2. Insert valve and O-ring into valve seat. Install the nut to retain valve to
wheel rim, but do not tighten yet. The nuts have a small plastic grommet
inside that must be sheared upon final tightening. When the nut becomes
hard to turn, stop.
3. Install sensor onto valve body and secure it with the retaining screw. These
sensors can be installed at varying angles to accommodate different rim
configurations. Before final tightening, look up the sensor manufacturer's
instructions to make sure that torque is correct, that sensor is in the correct
position (i.e. touching the wheel rim or not) and that the external portion of
the sensor is below bead seat. If these requirements are not met, the sensor
might damage during tire installation.
4. Tighten the valve nut firmly (the grommet inside the nut must break) to the
torque specified by the sensor manufacturer.
5. Install the tire.
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