Genie GS-3384 Service And Repair Manual page 122

Service and Repair Manual
Platform Overload Components
Calibrate the down limit switch
84 Turn the key switch to platform control. Start
the engine.
85 Raise the platform approximately 1 m.
86 Lower the platform until the down limit switch
activates and the platform stops lowering.
Quickly release the controls and then
immediately attempt to lower the platform to
the stowed position.
Result: The platform stops for 4 to 6 seconds.
Release the joystick and proceed to step 94.
Result: The platform stops and then will
immediately begin to lower again. The down
limit switch needs to be calibrated. Proceed to
step 87.
87 Raise the platform to approximately 6 m.
88 Release the safety arm latch, lift the safety
arm and rotate to a vertical position. Lock the
safety arm in position.
89 Loosen the fasteners securing the down limit
switch cam just enough to allow movement of
the cam. Refer to the illustration at step 51.
90 Working from the outside of the machine,
rotate the down limit switch cam in a clockwise
direction until the cam lobe is approximately
1 mm lower. Tighten the fasteners. Do not
over tighten.
Note: When adjusting the down limit switch cam,
do not move cam which activates the load sense
delay limit switch.
91 Raise the platform approximately 1 m.
92 Return the safety arm to the stowed position.
93 Repeat this procedure beginning with step 86.
110
94 Lower the platform to the stowed position and
remove the weight from the platform.
Result: The platform lowers to the stowed
position. Proceed to step 99.
Result: The platform stops lowering. The down
limit switch needs to be calibrated. Proceed to
step 95.
95 Raise the platform to approximately 6 m.
96 Release the safety arm latch, lift the safety
arm and rotate to a vertical position. Lock the
safety arm in position.
97 Loosen the fasteners securing the down limit
switch cam just enough to allow movement of
the cam.
98 Working from the outside of the machine,
rotate the down limit switch cam in a counter
clockwise direction until the cam lobe is
approximately 1 mm higher. Tighten the
fasteners. Do not over tighten.
Note: When adjusting the down limit switch cam,
do not move cam which activates the load sense
delay limit switch.
99 Raise the platform to approximately 6 m.
100 Release the safety arm latch, lift the safety
arm and rotate to a vertical position. Lock the
safety arm in position.
101 Install the cover onto the platform overload
pressure switch or switch box and securely
tighten the cover retaining fasteners. Do not
over tighten.
102 Apply Sentry Seal to one of the cover
retaining fasteners where it contacts the
platform overload pressure switch box.
103 Return the safety arm to the stowed position.
104 Lower the platform to the stowed position.
105 Calibrate the system relief valve. Refer to
Repair Procedure, How to Adjust the System
Relief Valve.
GS-84 • GS-90
September 2016
Part No. 1272222