Genie Z-34/22 Service Manual page 89

Service Manual
Primary Boom Components
1 Remove the rear turntable cover.
2 Raise the secondary boom until the master
cylinder barrel-end pivot pin is above the
turntable counterweights.
3 Raise the primary boom until the master
cylinder rod-end pivot pin is accessible.
4 Attach a lifting strap from an overhead crane
to the upper pivot for support. Do not apply
any lifting pressure.
5 Secure the upper secondary boom to the pivot
end of the primary boom with a strap.
Note: Securing the upper secondary boom to the
pivot will prevent the upper secondary boom from
falling when the master cylinder barrel-end pivot
pin is removed from the cylinder.
6 Tag, disconnect and plug the master 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.
7 Tie a strap around the lug on the rod end of
the master cylinder and secure the strap to the
primary boom.
Note: The strap will be used to lower the cylinder
out of the upper pivot.
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8 Remove the pin retaining fasteners from the
master cylinder rod-end pivot pin. Use a soft
metal drift to remove the pin.
9 Remove the pin retaining fasteners from the
master cylinder barrel-end pivot pin.
10 Use a soft metal drift to remove the pin from
the cylinder. Do not remove the pin from the
upper mid-pivot. Push the pin to one side, only
far enough to remove the cylinder.
Note: The pin should remain in one side of the
upper secondary boom and upper mid-pivot.
11 Use the strap around the rod-end lug to lower
the cylinder out of the machine.
Z-34/22 Bi-Energy
April 2016
Crushing hazard. The upper
secondary boom and the upper
pivot may fall if the pivot pin is
completely removed.
Part No. 139234