WABCO OptiTire, Installation Manual

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16
Installation Installation
5.4 External module & balancing plate
Maintaining a list of the wheel module numbers and location on the vehicle is
required for proper ECU programming:
– Assign each wheel module to the designated wheel.
– Enter each wheel module ID on the paper form (form can be found in the
appendix of this manual).
Wheel modules are always mounted on the outside wheels.
– Check which position of the wheel module is suitable for connecting the
PA tube to the wheel module and the valve

see chapter „5.5 PA tubes“ on
page 16.
The wheel module should be positioned as close as possible to the tire
valve. The minimum length of the PA tube from valve to external wheel
module should be 10 cm.
The PA tube should be guided to the tire valve without stretching,
deformation or twisting.
– Remove the wheel nuts on which the external modules and balancing plates
are to be mounted. The vehicle does not need to be jacked up when only
four wheel nuts are removed.
– If necessary, also remove the rim protecting ring.
– Position the wheel module and the balancing plate on the wheel bolts.
The wheel modules should be located directly opposite the balancing plates,
except on twin tires where no balancing plates are required.
Twin tires: Both wheel modules should be mounted on the outer wheel. The
wheel modules should be located directly opposite each other.
– Screw the wheel nuts back on.
– Tighten the wheel nuts with the torque specified by the vehicle manufacturer.
– Inflate tires to proper air pressure according to manufacturer or fleet
recommendations.
5.5 PA tubes
CAUTION
Increased wear due to incorrect installation
With tubes that rest on the edge of enclosures there
is increased wear due to vibrations. This might lead
to leakages.
– PA tubes need to be installed such that they
neither exert tensile or compressive stress on
connections nor rest on the rim.
– Avoid excess lengths to prevent undesired
vibrations.
– Avoid moisture in the PA tube or at the pressure
port of the external sensor.
– Hold the PA tube with the connection to the tire valve.
– Hold the other end of the PA tube to the wheel module.