Genie Z-30/20N Service Manual page 59

April 2005
REV B
How to Disassemble
the Primary Boom
Complete disassembly of the
boom is only necessary
if the outer or inner boom tubes
must be replaced. The extension
cylinder can be removed without
completely disassembling the
boom. See 4-4, How to Remove
the Extension Cylinder .
1 Remove the primary boom. See 4-2,
How to Remove the Primary Boom .
2 Place blocks under the extension cylinder for
support.
3 Remove the retaining fasteners from the
extension cylinder barrel-end pivot pin. Use a
soft metal drift to remove the pin.
4 Remove and label the location of the wear pads
from the top side of the boom tube at the
platform end of the boom.
Pay careful attention to the
location and amount of shims
used with each wear pad.
5 Support the extension tube with an overhead
crane at the platform end of the boom.
Crushing hazard. The boom
extension tube could fall when
removed from the boom if not
properly supported.
Part No. 106373
6 Support and slide the extension tube out of the
primary boom tube. Place the extension tube
on blocks for support.
7 Remove the external snap rings from the slave
cylinder barrel-end pivot pin.
8 Use a soft metal drift and drive the slave
cylinder barrel-end pivot pin out.
9 Remove the slave cylinder from the primary
extension boom tube.
10 Remove the external snap rings from the
extension cylinder rod-end pivot pins at the
platform end of the extension tube. Use a soft
metal drift to remove the pins.
11 Support and slide the extension cylinder out of
the pivot end of the boom extension tube. Place
the extension cylinder on blocks for support.
Genie Z-30/20N
Section 4 • Repair Procedures
PRIMARY BOOM COMPONENTS
During removal, the overhead
crane strap will need to be
carefully adjusted for proper
balancing.
During removal, the overhead
crane strap will need to be
carefully adjusted for proper
balancing.
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