18 Z®-51/
31J
Part No. 1268553GT
October 2020
Service and Repair Manual
How to Adjust the Joystick
Ramp Rate Setting
The ramp rate setting of a joystick controls the
time at which it takes for the joystick to reach
maximum output, when moved out of the neutral
position. The ramp rate settings of a joystick can
be changed to compensate for hydraulic pump
wear to maintain peak performance from the
machine.
Note: Perform this procedure with the boom in the
stowed position.
1 Pull out the red Emergency Stop button to the
on position at both the ground and platform
controls.
2 Turn the key switch to platform control. Do not
start the engine.
3 Push in the platform controls red Emergency
Stop button to the off position.
4 Do not press down the foot switch.
5 Move and hold the drive enable toggle switch
in the right position and pull out the red
Emergency Stop button to the on position.
6 When the alarm sounds, release the drive
enable toggle switch.
7 Momentarily activate the drive enable toggle
switch in the right direction 6 times.
Result: There should be a pause and the
alarm should sound 6 times indicating that the
machine is in ramp rate calibration mode.
8 Start the engine from the platform controls and
press down the foot switch.
9 Start a timer and simultaneously move the
joystick in either direction full stroke. Note how
long it takes the function to reach maximum
speed. This is the ramp rate.
10 Compare the function ramp rate time with the
table below and determine whether the ramp
rate time needs to increase or decrease.
11 While the joystick is activated, set the ramp
rate. Momentarily move the drive enable toggle
switch in the right direction to increase the time
or momentarily move the drive enable toggle
switch in the left direction to decrease the time.
Note: Each time the drive enable toggle switch is
momentarily moved, the time will change in 10%
increments.
12 Repeat steps 9 through 11 for each joystick
controlled machine function.
13 Return the joystick to the neutral position and
wait for approximately 10 seconds to allow the
settings to be saved.
Result: The alarm should sound indicating that
the settings have been saved in memory.
Platform Controls
Содержание Z-51/30J
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