Precautions Relating To Maintenance (3); Handling Of The Torque Sensor - Yamaha X94 Series Service Manual

Precautions relating to maintenance (3)

Handling of the torque sensor

1. Keep away from magnets.
Do not use magnetized screwdrivers or per-
form maintenance near large sources of
electric power.
2. Avoid strong mechanical impact.
Torque sensors which have been dropped
or which have been removed through the
use of a hammer or the like cannot be used
because the torque sensor reference volt-
age can change significantly due to varia-
tions in the internal magnetic circuits.
3. Do not crush or press in the axial direction.
Any deformation of the torque sensor case
by crushing can result in changes in the
torque sensor reference voltage. Torque
sensor reference voltage changes can also
be caused by the application of a force of
over 2 kgf on the sensor shaft while the
case is clamped in place.
The installation of a one-way clutch having
a tightly-fitted spline can apply excessive
force to the sensor shaft and result in volt-
age changes.
4. Do not pull leads.
Do not pull forcefully on the small circuit
board leads which connect the torque sen-
sor body to the torque sensor. It can change
the torque sensor reference voltage.
5. Do not allow water to come in contact with
the Drive Unit.
Any rust on the sensor shaft or the main
axle can cause output fluctuations or can
reduce the strength of the parts. Do not per-
form servicing on the sensor in wet loca-
tions.
6. Organic solvents
Do not apply gasoline or solvent-based
lubricants (consumer spray-type lubricants)
to the sensor shaft or the circuit board. It
can reduce the unit's ability to prevent
short-circuits.
Precautions relating to maintenance (3)
7. Do not reuse damaged drive axles.
The sensor shaft and the drive axle slide in
a metal bearing. It will be difficult to install
the one-way clutch and the sensor shaft if
there are scratches on the surface of the
drive axle.
8. Do not disassemble the torque sensor.
Do not disassemble the interior of the sen-
sor because the torque sensor cannot be
readjusted. Torque sensors that have been
disassembled cannot be used.
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