Genie Z-34/22IC, Руководство по обслуживанию

Страница: 83 / 185

Part No. 128267 Z-34/22 IC 4 - 11
July 2007 Section 4 • Repair Procedures
REV A
Jib Boom Components
3-1
Jib Boom
How to Remove the Jib Boom
Note: Perform this procedure with the boom in the
stowed position.
Note: When removing a hose assembly or fitting,
the O-ring on the fitting and/or hose end must be
replaced and then torqued to specification during
installation. Refer to Section 2,
Hydraulic Hose and
Fitting Torque Specifications.
1 Remove the platform.
2 Remove the platform mounting weldment
and the platform rotator. See 2-2, How to
Remove the Platform Rotator.
3 Tag, disconnect and plug the jib boom lift
cylinder hydraulic hoses. Cap the fittings on the
jib boom lift cylinder.
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to squirt
or spray.
4 Remove the cable cover from the side of the
jib boom.
5 Tag, disconnect and plug the hydraulic hoses
from ports "T" and "P" of the jib boom manifold.
Cap the fittings on the manifold.
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to squirt
or spray.
6 Tag and disconnect the electrical wiring from
the jib boom manifold.
7 Attach a lifting strap from an overhead crane to
the jib boom.
8 Remove the pin retaining fasteners from the jib
boom pivot pin at the jib boom bellcrank.
9 Use a soft metal drift to remove the jib boom
pivot pin. Remove the jib boom from the jib
boom bellcrank.
Crushing hazard. The jib boom
could fall when the pin is removed
if not properly supported by the
overhead crane.
10 Remove the pin retaining fasteners from the jib
boom lift cylinder rod-end pivot pin. Do not
remove the pin.
11 Remove both of the jib boom leveling links from
the bellcrank.
12 Attach a lifting strap from an overhead crane to
the rod-end of the jib boom lift cylinder.
13 Use a soft metal drift to remove the jib boom lift
cylinder rod-end pivot pin. Remove the jib boom
lift cylinder from the jib boom bellcrank.
Crushing hazard. The jib boom
lift cylinder could fall when the pin
is removed if not properly
supported by the overhead crane.