November 2016
Service and Repair Manual
Hydraulic Pump
Part No. 1272220GT
GS-2669 DC • GS-3369 DC • GS-4069 DC
43
How t o C alibr at e t he Hy draulic Pum p
How to Calibrate the Hydraulic
Pump
1
Turn the key switch to the ground controls
position and pull out the red Emergency Stop
button to the on position at the platform
controls.
2
Press and hold the ground control scroll up
and scroll down buttons.
Ground Control Menu Buttons
1 scroll down button
2 enter button
3 scroll down button
4 escape button
5 LCD display
3
Pull out the red Emergency Stop button to the
on position at the ground controls.
Result: The ground controls LCD display will
show the following:
4
Release the Scroll Up and Scroll Down
buttons after the ground controller powers up.
5
At the ground controls, use the Scroll Up or
Scroll Down buttons to scroll to Select Option.
6
Press the Enter button.
7
Use the Scroll Up or Scroll Down buttons to
scroll to Select Option Pump Efficiency.
8
Press the Enter button.
Result: The ground controls LCD display will
show the following:
9
Press the Scroll Down button.
Result: The ground controls LCD display will
show the following:
