Genie Z80/60 Service Manual page 137

June 2011
REV D
11 Use a soft metal drift to remove the upper
primary boom lift cylinder linkage arm pivot pin.
Using a suitable lifting device remove the
linkage arm from the machine.
Crushing hazard. The upper
primary boom lift cylinder linkage
arm will fall if not properly
supported when the pivot pin is
removed.
12 Attach a 5 ton / 5000 kg overhead crane to the
center point of the primary boom.
13 Remove the pin retaining fastener from the
primary boom pivot pin.
14 Use a soft metal drift to remove the primary
boom pivot pin.
Crushing hazard. The primary
boom could become unbalanced
and fall if not properly supported
when the pivot pin is removed.
15 Carefully remove the primary boom from the
machine and place it on a structure capable of
supporting it.
Crushing hazard. The primary
boom could become unbalanced
and fall if not properly supported
when removed from the machine.
Note: When the primary boom is installed, the
primary boom angle sensor will need to be
calibrated.
Part No. 88619
How to Disassemble the
Primary Boom
Note: Complete disassembly of the primary boom
is only necessary if the outer or inner primary
boom tube must be replaced. The extension
cylinder can be removed without completely
disassembling the boom. See 4-4, How to Remove
the Primary Boom Extension Cylinder .
1 Remove the primary boom. See 4-2, How to
Remove the Primary Boom .
2 Place blocks under the barrel end of the primary
boom extension cylinder for support.
3 Remove the pin retaining fastener from the
extension cylinder barrel-end pivot pin at the
pivot end of the primary boom.
4 Use a soft metal drift to remove the pin.
Crushing hazard. The primary
boom could become unbalanced
and fall if not properly supported
when the pivot pin is removed.
5 Remove and label the location of the wear pads
from the platform end of the primary boom.
Note: Pay careful attention to the location and
number of shims used with each wear pad.
6 Attach a lifting strap from an overhead crane to
the extension boom assembly.
7 Support and slide the extension boom
assembly out of the primary boom tube and
place it on a structure capable of supporting it.
Crushing hazard. The extension
boom tube could become
unbalanced and fall if not properly
supported when removed from the
primary boom tube.
Note: During removal, the overhead crane strap
will need to be adjusted for proper balancing.
Z-80/60
Section 4 • Repair Procedures
BOOM COMPONENTS
4 - 35