November 2021 Maintenance Manual
Annual Maintenance Procedures
Part No. 1305686GT Scissor Lifts 59
17 Using the multimeter, measure the voltage
reading of the platform height sensor.
Result: The voltage reading of the platform
height sensor is between 1V and 4V. The
platform height sensor is functioning properly.
Result: The voltage reading of the platform
height sensor is not within specifications. The
platform height sensor is not functioning
properly. Replace the platform height sensor.
Refer to Repair Procedure in the appropriate
Service and Repair Manual for your machine,
How to Disassemble the Platform Height
Sensor Assembly.
18 At the ground controls, turn the key switch to
the off position and push in the red
Emergency Stop button to the off position.
19 Remove the test leads.
20 Turn the key switch to ground controls and
pull out the ground controls red Emergency
Stop button to the on position.
21 Raise the platform to approximately 1 ft /
30 cm.
22 Return the safety arm to the stowed position.
23 Lower the platform to the stowed position.
24 Turn the key switch to the off position.
GS-69, GS-84, GS-90
Note: Perform this procedure with the machine on
a firm, level surface that is free of obstructions.
1 Start the engine from the ground controls and
raise the platform approximately 18 feet /
5.5 m from the ground.
2 Release the safety arm latch, lift the safety
arm and rotate to a vertical position. Lock the
safety arm in position.
Note: Verify the safety arm is locked in the vertical
position.
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