Part No. 52709
Genie Z-45/25 & Genie Z-45/25J
7 - 9
First Edition • Second Printing
Section 7 • Repair Procedures
PLATFORM CONTROLS
3 Connect the black (-) lead from a DC volt meter
to the number 2 terminal, and the red (+) lead to
the number 10 terminal.
Horsepower limiter board
a
"A" potentiometer maximum voltage
output to the controller in the stowed
position
b
"B" potentiometer maximum voltage
output to the drive controller in the
boom raised or extended position
c
"C" potentiometer reaction rate or
how fast the voltage output reacts to
the change in engine rpm
4 Start the engine from the platform controls.
5 Move the engine idle control switch to foot
switch activated high idle (rabbit and foot switch
symbol).
6 Press down the foot switch and adjust the
"A" potentiometer counterclockwise to increase
voltage or clockwise to decrease voltage.
"A" potentiometer specifications - all models
Voltage setting
9 to 10V DC
7 Move the engine idle control switch to low idle
(turtle symbol).
8 Press down the foot switch and then adjust
the "C" potentiometer to obtain a
0.1V DC to 0.5V DC voltage reading.
9 Move the engine idle control switch to foot
switch activated high idle (rabbit and foot switch
symbol).
10 Press down the foot switch and re-adjust the
"A" potentiometer to the previous voltage
setting in step 6.
11 Be sure that the boom is in the stowed position,
then drive the machine and observe how the
engine rpm reacts to drive control handle
movement. If the engine surges or hunts, adjust
the "C" potentiometer counterclockwise until
surging is minimized.
Under an extreme load, an
excessive counterclockwise
adjustment to the "C"
potentiometer will cause the
engine to stall. The "C"
potentiometer adjustment is a
compromise between engine
stability (surging) and engine
rpm drop.
12 Disconnect the volt meter.
13 Raise the primary boom above horizontal.
12V DC or greater
ground
engine rpm sensor
not used
not used
low drive speed limit switch
not used
not used
not used
output to drive controller
b
a
c
Содержание Z-45 XC
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