Part No. 139378
Z-30/20N • Z-30/20N RJ • Z-34/22 • Z-34/22N
4 - 9
June 2011
Section 4 • Repair Procedures
REV A
3-1
Jib Boom
How to Remove the Jib Boom
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 Remove the mounting fasteners from the jib
boom/platform rotate manifold and lay the
manifold to the side. Do not remove the hoses
or disconnect the wiring.
Component damage hazard.
Hoses and cables can be
damaged if they are kinked or
pinched.
6
Models with rotating jib boom:
Tag,
disconnect and plug the hydraulic hoses from
the jib boom rotator. Cap the fittings on the
rotator 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.
7 Attach a lifting strap from an overhead crane to
the jib boom.
8
Models without rotating jib boom:
Remove
the pin retaining fastener from the jib boom
pivot pin at the jib boom bellcrank. Use a soft
metal drift to remove the pin, then 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.
Models with rotating jib boom:
Remove the
pin retaining fastener from the jib boom pivot
pin at the jib boom rotator. Use a soft metal drift
to remove the pin, then remove the jib boom
from the jib boom rotator.
Crushing hazard. The jib boom
could fall when the pin is removed
if not properly supported by the
overhead crane.
Jib Boom Components
Содержание Z-30/20N
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Страница 148: ...6 46 June2011 Section 6 Schematics 6 45 Power Cable Wiring Diagram...
Страница 149: ...6 47 Section 6 Schematics June2011 6 48 Drive Contactor Panel Wiring Diagram...
Страница 152: ...6 50 June2011 Section 6 Schematics Manifold and Limit Switch Wiring Diagram 6 49...
Страница 153: ...6 51 Section 6 Schematics June2011 6 52 LVI BCI Option Wiring Diagram...
Страница 156: ...6 54 June2011 Section 6 Schematics 6 53 Charger Interlock Option...
Страница 157: ...6 55 Section 6 Schematics June2011 6 56 CTE Option CE Models...
Страница 160: ...6 58 June2011 Section 6 Schematics Hydraulic Schematic 6 57...