Genie Z-60/34 Service Manual page 92

Section 4 • Repair Procedures
PRIMARY BOOM COMPONENTS
6 Remove the primary boom drive speed limit
switch from the upper pivot. Do not disconnect
the wiring.
7 Remove the primary extension boom drive
speed limit switch mounted on the inside of the
pivot end of the primary boom. Do not
disconnect the wiring.
8 At the engine side of the upper pivot, remove
the retaining fasteners from the master cylinder
rod-end pivot pin. Use a slide hammer to
remove the pin.
9 Pull the master cylinder back and secure it from
moving.
10 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.
11 Attach a 5 ton/5,000 kg overhead crane to the
center point of the primary boom. Lift the
primary boom enough to access the primary
boom lift cylinder rod-end pivot pin.
12 Attach a similar lifting device to the primary
boom lift cylinder.
13 Place a 24 inch/61 cm long block of wood
across the lower secondary boom leveling links
to support the primary boom lift cylinder.
4 - 18
14 Remove the pin retaining fasteners from the
primary boom lift cylinder rod-end pivot pin. Use
a soft metal drift to remove the pin.
15 Lower the rod end of the primary boom lift
cylinder onto the support block placed across
the lower secondary boom leveling links.
16 Remove the pin retaining fasteners from the
primary boom pivot pin.
17 Remove the primary boom pivot pin with a soft
metal drift, then carefully remove the primary
boom from the machine and place it on a
structure capable of supporting it.
Genie Z-60/34
November 2003
Crushing hazard. The primary
boom lift cylinder and the primary
boom will fall if they are not
properly supported.
Crushing hazard. If the overhead
crane is not properly attached,
the boom could become
unbalanced and fall when
removed from the machine if not
properly supported.
Part No. 75861
REV A