Secondary Boom - Genie TZ-34/20 Service Manual

January 2016
3-1

Secondary Boom

How to
Remove the Secondary Boom
This procedure in this section
requires specifi c repair skills,
lifting equipment and a suitable
workshop. Attempting this
procedure without these skills
and tools could result in death
or serious injury and signifi cant
component damage. Dealer
service is required.
Note: Perform this procedure on a fi rm, level
surface, with the boom in the stowed position.
Note: When removing a hose assembly or fi tting,
the O-ring on the fi tting and/or hose end must be
replaced and then torqued to specifi cation during
installation.
Refer to Section 2, Hydraulic Hose and Fitting
Torque Specifi cations.
1 Remove the primary boom. See 2-2, How to
Remove the Primary Boom.
Part No. 825934
SECONDARY BOOM COMPONENTS
Remove the mid-pivot
2 Attach a lifting strap of suitable capacity from
an overhead crane to the primary lift cylinder.
Raise the cylinder to a horizontal position.
3 Remove the pin retaining fasteners securing the
primary lift cylinder pivot pin to the mid-pivot.
4 Using a soft metal drift, remove the primary lift
cylinder pivot pin at the mid-pivot.
5 Attach a lifting strap of suitable capacity from
an overhead crane to the mid-pivot. Do not
apply any lifting pressure.
6 Remove the pin retaining fasteners securing
the secondary boom pivot pin to the mid-pivot.
7 Remove the pin retaining fasteners securing
the secondary link pivot pin to the mid-pivot.
8 Remove the hose clamps securing the
hydraulic hoses to the mid-pivot.
9 Tag, disconnect and plug the hydraulic hoses to
the hydraulic hard lines at the mid-pivot end of
the secondary boom. Cap the fi ttings.
Genie TZ-34/20
Section 4 • Repair Procedures
Crushing hazard. The cylinder
could fall if not properly supported
when the pivot pin is removed.
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.
Component damage hazard.
Cables and hoses can be
damaged if they are kinked or
pinched.
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