SkyAzúl Greer MG514, Installation, Calibration, And Service Manual

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3.7.5 Checking the Angle Sensor Pendulum
The ANGLE SENSOR uses a copper pendulum, mounted behind the sensor assembly. In order to stop
the pendulum from swinging uncontrollably during movements of the boom, two magnets provide
damping. If problems with the angle sensor are suspected, ensure the pendulum and potentiometer are
operating without restriction. Then continue to check electrical operation before performing any
calibration.
1. Remove the reeling drum cover.
2. Locate the pendulum. Refer to Figure 3.7.5 below.
3. Push the pendulum downwards and ensure it moves freely. Some resistance of movement may
be encountered as the pendulum is moved; however, this is due to the magnets that provide the
damping.
4. Release the pendulum and make sure that it returns with free, but controlled movement, directly
back to its original position. Repeat this step a few more times, ensuring it always returns to its
original position.
NOTE: If the pendulum “sticks” while performing the above checks, ensure there are no wires touching
the pendulum, or that no other obvious problems are present. If not, it will be necessary to replace the
sensor baseplate assembly.
FIGURE 3.7.5 - SENSOR BASEPLATE ASSEMBLY
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