4 - 12
Genie Z-30/20
Part No. 43063
Service Manual - Third Edition
Section 4 - Scheduled Maintenance Procedures
TABLE
B
PROCEDURES
B-11
Test the Foot Switch
A properly functioning foot switch is essential to
safe machine operation. Machine functions should
activate and operate smoothly as long as the foot
switch is pressed down, and promptly stop when
the foot switch is released. An improperly
functioning foot switch can cause an unsafe
working condition.
1 Turn the key switch to platform control and lift
the red Emergency Stop switch cover and
move the toggle switch to the
ON
position. Pull
out the Emergency Stop Button to the
ON
position at the platform controls.
2 Without pressing down the foot switch, check
the machine functions.
Result: The machine functions should not
operate.
3 Press down the foot switch and operate the
machine functions.
Result: The machine functions should operate.
B-12
Test the Drive Brakes
Proper brake action is essential to safe machine
operation. The drive brake function should operate
smoothly, free of hesitation, jerking and unusual
noise. Hydraulically-released individual wheel
brakes can appear to operate normally when not
fully operational.
Be sure that the machine is not in
free-wheel or partial free-wheel
configuration. Refer to B-4 in this
section, Confirm the Proper Brake
Configuration.
Select a test area that is firm,
level and free of obstructions.
1 Mark a test line on the ground for reference.
2 Turn the key switch to platform control and lift
the red Emergency Stop switch cover and
move the toggle switch to the
ON
position at the
ground controls. Pull out the Emergency Stop
Button to the
ON
position at the platform
controls.
3 Lower the boom into the stowed position.
4 Choose a point on the machine; i.e., contact
patch of a tire, as a visual reference for use
when crossing the test line.
5 Bring the machine to top drive speed before
reaching the test line. Release the drive
joystick when your reference point on the
machine crosses the test line.
6 Measure the distance between the test line and
your machine reference point.
Braking: paved surface
Stopping distance
4-5 ft
1.2 to 1.5 m
The brakes must be able to hold
the machine on any slope it is
able to climb.
B-13
Test the Drive Speed
- Stowed Position
Proper drive function movement is essential to
safe machine operation. The drive function should
respond quickly and smoothly to operator control.
Drive performance should also be free of
hesitation, jerking and unusual noise over the
entire proportionally controlled speed range.
Select a test area that is firm,
level and free of obstructions.
1 Create start and finish lines by marking two
lines on the ground 40 feet (12.2 m) apart.
