72 The GS550 System
Replacing a Sensor Antenna
The GS series sensor antenna (part number TA011) is identified by a blue coated tip. The TA011
is replaceable.
Heavily damaged antennas (ripped out, sheared off, wire exposed and fraying etc.) should be
replaced to ensure communication between the sensor and the cabin mounted display unit.
The following items are necessary to successfully replace the sensor antenna:
• one new antenna with white nylon hex bolt
• one wrench 7/16 inch
• an electrical insulating compound
This procedure may be followed without removing the sensor from the crane if it is safe to do so.
If removed, an angle sensor must be re-calibrated during reinstallation for correct angle display
(see the angle sensor installation section of the user manual).
Important! The interior of the sensor must be protected from dust, grime and water at
all times. If it rains during the procedure an umbrella or other suitable means of
protection should be used.
1. Place the crane, boom, jib or ball hook such that the sensor is safely accessible.
2. Clean dust, grime and water from the sensor.
3. Identify the short black whip antenna and the white hex bolt securing it.
4. Inspect the antenna for signs of obvious physical damage.
5. Carefully unscrew the white nylon hex bolt completely and slide it up the antenna.
6. Grip the antenna by the base of the black plastic sheathing and pull it straight out of the hole in
which it is seated. Place the old antenna aside.
7. Slide the white nylon hex bolt to the middle of the length of the new antenna.
8. Coat the exposed metal foot of the new antenna with an electrical insulating compound by
carefully inserting it in the mouth of the compound tube.
Pictures: Removing the antenna
Figure: TA011 GS series sensor antenna
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