Test The Tilt Level Sensor; Test The Limit Switches - Genie Z-45/22 Service Manual

Section 4 - Scheduled Maintenance Procedures
TABLE A PROCEDURES
A-12

Test the Tilt Level Sensor

The tilt sensor sounds an alarm in the platform
when the incline of the chassis exceeds 3°.
Select a level test area.
1 Start the engine from
the platform controls.
2 Open the engine side
cover and press
down on one side of
the tilt sensor.
Result: After a 1
second delay, the
alarm in the platform
should sound.
A-13

Test the Limit Switches

Detecting limit switch malfunctions is essential to
safe machine operation. The drive enable limit
switch activates a signal light to inform the
operator that the platform is over the steering
wheels, and stops drive movement unless the
drive enable override switch is used. The drive
limit switch is used to restrict drive speed when
the boom is raised and signal the oscillate cylinder
to extend the lock-out wedges (oscillating axle
equipped machines). Also, on oscillating axle
equipped machines, there are two limit switches to
stop the boom from being raised unless the lock
out wedges are extended. Improperly functioning
limit switches will allow the boom to raise and/or
drive into an unsafe position.
Drive Limit Switch
1 With the engine off and the machine in the
stowed position, visually inspect the drive limit
switch for the following:
4 - 6
· broken or missing rollers or arms
· missing fasteners
· loose wiring
2 Start the engine from the ground controls.
3 Raise the primary boom above the drive limit
switch and turn the machine off.
4 Manually activate the drive limit switch.
Result: The drive limit switch arm should move
freely and spring return to center. A distinct
click should be felt and heard.
5 Restart the engine and lower the boom into the
fully stowed position.
6 Move the key switch to platform control, and
then start the engine from the platform
controls.
7 Slowly move the drive control handle off center.
Result: The machine should move at normal
drive speeds.
8 Raise the primary boom above the drive limit
switch.
9 Slowly move the drive control handle off center.
Result: The machine should move at a reduced
drive speed.
Specifications
Elevated position
2WD and 4WD
Genie Z-45/22
Service Manual - First Edition
a
a drive limit switch
1 foot / 0.3 meter per
second
Part No. 29487