Jib Boom Bellcrank Angle Sensor - Genie ZX-135/70 Service Manual

August 2014
17 Attach a lifting strap from an overhead crane
to the barrel end of the jib boom extension
cylinder.
18 Remove the pin retaining fasteners from the
jib boom extension cylinder barrel-end pivot
pin. Use a soft metal drift to remove the pin.
19 Carefully slide the jib boom extension cylinder
out of the jib boom and place it on a structure
capable of supporting it.
Crushing hazard. The jib boom
extension cylinder could become
unbalanced and fall when
removed from the jib boom if not
properly supported.
Note: During removal, the overhead crane strap
will need to be adjusted for proper balancing.
Part No. 218700
Jib Boom Components
3-6

Jib Boom Bellcrank Angle Sensor

The jib boom bellcrank angle sensor is monitored
by the control system to keep the jib boom
bellcrank vertical and to help maintain a level
platform through boom range of motion. If a jib
boom bellcrank angle sensor is replaced, it must
be calibrated prior to machine operation. The jib
boom bellcrank angle sensor is mounted to the
bellcrank pivot pin on the engine side of the
machine.
How to Calibrate the Jib Boom
Bellcrank Angle Sensor
Note: If the primary boom angle sensors have
been removed or replaced, they will need to be
calibrated before the jib boom bellcrank angle
sensor. Refer to repair procedure, Primary Boom
Angle Sensor for the calibration procedures.
Note: Perform this procedure with the machine on
a firm, level surface and in the stowed position with
the axles extended.
Note: A digital level will be required to perform this
procedure.
Note: A kit is available through the Genie Product
Support (Genie part number 58351). This kit
includes a digital level with a magnetic base and
cable harnesses.
ZX-135/70
Service Manual
119