April 2018 Maintenance Manual
Quarterly Maintenance Procedures
Part No. 1268489GT S
®
Booms • Z
®
Booms 61
5 Remove the key from the main key switch and
insert the key into the bypass/recovery key
switch.
Note: The bypass/recovery key switch is located on
the front panel in the lower right corner on Z-80
before serial number Z8013-3911 and Z-135
before serial number Z13512-1712.
6 Turn and hold the bypass/recovery key switch
to the recovery position. The switch must be
held in the recovery position.
Result: The emergency power unit will turn on
and the boom will begin the following recovery
sequence.
SX-105 XC, SX-125 XC, SX-135 XC, SX-150,
SX-180, S-100/105/120/125, S-100/120HD:
• The primary boom will retract
• The primary boom will lower
Z-135 and ZX-135:
• The primary boom will retract
• The secondary boom will retract
• The primary boom will lower
Note: It is not necessary to fully lower the primary
boom.
Z-80/60:
• The primary boom will retract
• The primary boom will lower
• The secondary boom will retract
7 Turn the bypass/recovery key switch to the run
position.
8 Remove the key from the bypass/recovery key
switch and insert the key into the main key
switch.
9 Start the engine and return the boom to the
stowed position.
Q-19
Test the Platform Self-leveling
Genie specifications require that this procedure be
performed quarterly.
ALC-1000 Models:
Automatic platform self-leveling throughout the full
cycle of primary boom raising and lowering is
essential for safe machine operation. The platform
is maintained level by the communication between
the platform level sensor and the turntable level
sensor. If the platform becomes out of level, the
computer at the platform controls will open the
appropriate solenoid valve(s) at the platform
manifold to maintain a level platform.
All other models:
Automatic platform self-leveling throughout the full
cycle of boom raising and lowering is essential for
safe machine operation. The platform is maintained
at level by the platform leveling slave cylinder
which operates in a closed loop hydraulic circuit
with the master cylinder located at the base of the
boom. A platform self-leveling failure creates an
unsafe working condition for platform and ground
personnel.
1 At the ground controls, lower the boom to the
stowed position.
2 Activate function enable and adjust the
platform to a level position.
3 Raise and lower the primary boom through a
full cycle.
Result: The platform should remain level at all
times to within ±5 degrees.
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