Maintenance Manual April 2018
Quarterly Maintenance Procedures
82 S
®
Booms • Z
®
Booms Part No. 1268489GT
Q-30
Test the Primary Boom Angle
Sensor - Z-80/60
Genie specifications require that this procedure be
performed quarterly.
A properly functioning primary boom angle sensor
(PBAS) is essential to safe machine operation. The
primary boom angle sensor is used to limit the
angle of the primary boom relative to the angle of
the secondary boom and gravity. The ECM at the
ground controls (TCON) monitors the position and
angle of the primary boom using the signal from
PBAS. The PBAS signal is used to control the
ramping of the primary boom as well as velocity
control, limiting the speed of the primary boom to
1.3 feet / 0.4 meters per second.
Note: Perform this procedure with the machine on
a firm, level surface.
Note: Use the following chart to identify the
description of each LCD screen control button used
in this procedure.
Plus Minus Previous Enter
1 Turn the key switch to ground control and pull
out the red Emergency Stop button to the on
position at both ground and platform controls.
2 Press the enter or previous button on the
LCD screen until primary boom angle is
displayed.
3 Start the engine from the ground controls.
4 Raise the primary boom. The display will begin
showing a boom angle of 40°.
5 Continue raising the primary boom until the
display shows 65°.
Result: The primary boom stops.
Result: The primary boom does not stop.
Immediately release the function enable button and
lower the boom. Calibrate the angle sensor. Refer
to Repair Procedure in the appropriate Service and
Repair Manual for your machine, How to Calibrate
the Primary Boom Angle Sensor.
-over hazard. If the boom
does not stop at 65°,
immediately release the function
enable button and lower the
primary boom. Failure to lower
the boom could cause the
machine to tip over resulting in
death or serious injury.
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