March 2022
Maintenance Manual
Quarterly Maintenance Procedures
Part No. 1268489GT
S
®
Booms • Z
®
Booms
79
Q-28
Test the Primary Boom Angle
Sensor - SX-105XC, SX-125XC,
SX-135XC, SX-150 and SX-180
Genie specifications require that this procedure be
performed quarterly.
A properly functioning primary boom angle sensor
is essential to safe machine operation. The ECM
at the ground controls (TCON) monitors the
position and angle of the primary boom using the
signal from the primary boom angle sensor. The
primary boom angle sensor signal is used to
control the ramping of the primary boom, limiting
the speed of the primary boom to 2.3 feet /
0.7 meters per second.
Note: The turntable level sensor must be tested
before starting this procedure. Refer to
Maintenance Procedures,
Test the Turntable Level
Sensor
.
Note: A digital level will be required to perform this
procedure.
Note: A kit is available through Genie Product
Support (Genie part number 58351GT). This kit
includes a digital level with a magnetic base and
cable harnesses.
Note: A properly calibrated digital level is essential
to proper machine calibration. Refer to the
manufactures calibration information.
Note: Use the following chart to identify the
description of each LCD screen control button
used in this procedure.
Plus
Minus
Previous
Enter
Note: Perform this procedure with the booms in
the fully stowed position and the axles fully
extended.
SX-105XC and SX-125XC
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 Start the engine from the ground controls.
3 Press the
enter
or
previous
button on the
LCD screen until PRIMARY BOOM ANGLE
TO GRAVITY DEGREES is displayed.
4 Place a digital level that has been calibrated
to gravity on top of the primary boom.
5 Raise the primary boom while watching the
display screen.
6 Continue to raise the primary boom until it
stops at approximately 74°.
Result: The reading at the display and digital
level is within ± 2° of each other and of 74°.
Result: The reading at the display and digital
level is greater than ± 2° of each other and of
74°. The primary boom angle sensor must be
calibrated. Refer to Repair Procedure in the
appropriate Service and Repair Manual for
your machine,
How to Calibrate the Primary
Boom Angle Sensor
.
Tip-over hazard. If the boom is
not within ± 2° of 74°,
immediately lower the primary
boom. Failure to lower the boom
could cause the machine to tip
over resulting in death or serious
injury. Refer to Repair
Procedure in the appropriate
Service and Repair Manual for
your machine,
How to Calibrate
the Primary Boom Angle Sensor
.
Summary of Contents for Genie Lift Guard S-40
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