Firestone 4-corner, Installation Instructions Manual

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6
HEIGHT SENSOR INSTALLATION (cont.)
Step 4
To install the height control sensor, refer to Figure 4a, 4b and 5, to
become familiar with the mounting geometry and hardware. Be
sure that the area above and below the sensor location on the axle
is clear of obstructions for the arm to move.
Step 5
Take the sensor under the vehicle and find a location where the
sensor may be attached to the vehicle so that the arm extends
over the suspension. The arm of the sensor must be able to travel
from full jounce to full rebound for the system to work properly.
Looking at the table below pick out a hole on the sensor arm that
will work on your suspension attachment point. The use of the
provided template will show minimum and maximum arm move-
ment as shown in Figure 3. At ride height the height sensor arm
should be as horizontal as possible.
Hole location Approx. Working range
(from sensor out) (of sensor)
First hole on the sensor arm 2”
itself (6mm)
Second hole 3”
Third hole 4”
Fourth hole 5”
Fifth hole 6”
Notice that the maximum working range of the sensor is 6”, even
with the linkage placed in the fifth hole of the sensor arm. If your
suspension provides more than 6” of travel, you will have to posi-
tion the sensor so that operates within the yellow portion of the
sensor installation template. For example, if you have a 4-link type
rear suspension, you can simply locate the linkage a bit closer to the pivot of the 4-link arm on one of the 4-link bars. By attaching the linkage a bit
closer to the pivot of the 4-link arm, the sensor “sees” less suspension movement than if it were attached directly at the axle location. The object is
to make sure that the suspension movement does not move the sensor arm out of its range of authority as outlined in Figure 3. On an independent
front suspension, simply place the linkage somewhere inboard of the ball joint to effectively lessen the travel of the sensor. If the sensor arm
exceeds it range of authority, the IntelliRide™ system will not respond. See page 12 & 13 for diagnostic information.
What direction do the height sensors need to be mounted with the
WR8-760-2230 IntelliRide system?
If provided with a wire harness the power and ground to each vehicle corner
expects the height sensor arm to be in a certain position relative to the body of
the sensor. If mounted backwards the system would act in reverse, or not at
all. The height sensors on the right side of the vehicle need to be mounted with
the arm in the 9:00 position. The height sensors on the left side of the vehicle
need to be mounted with the arm in the 3:00 position.