How To Disassemble The Primary Boom - Genie Z-34/22 Service Manual

April 2016
17 Tag, disconnect and plug the extension
cylinder hydraulic hoses. Cap the fittings on
the 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.
18 Attach an overhead 5 ton / 5000 kg crane to
the center point of the boom.
19 Attach a similar lifting device to the lift cylinder.
20 Place support blocks under the cylinder,
across the secondary boom.
21 Remove the pin retaining fastener from the
boom lift cylinder rod-end pivot pin. Use a soft
metal drift to remove the pin.
Crushing hazard. The boom lift
cylinder will fall unless it is
properly supported.
22 Lower the rod end of the lift cylinder onto
support blocks.
23 Remove the pin retaining fastener from the
primary boom pivot pin.
24 Remove the primary boom pivot pin with a soft
metal drift, then carefully remove the boom
from the machine.
Crushing hazard. If the
overhead crane is not properly
attached, the boom could
become unbalanced and fall
when it is removed from the
machine.
Part No. 139234
Primary Boom Components
How to Dis ass embl e the Primary Boom
How to Disassemble the Primary
Boom
Note: 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. Refer
to Repair Procedure, How to Remove the
Extension Cylinder.
1 Remove the boom. Refer to Repair
Procedure, 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 Label the location of all wear pads from the
outer boom tube at the platform end. Remove
all wear pads, including shims, from the
platform end of the boom.
Note: Pay careful attention to the location and
amount of shims used with each wear pad.
5 Carefully rotate the barrel end of the extension
cylinder until the pin mounting bore is in a
vertical position.
6 Attach a lifting strap from an overhead crane
to the extension tube at the platform end.
Z-34/22 Bi-Energy
Service Manual
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