Genie Z-45/25 Service Manual page 376

Section 7 • Repair Procedures
PRIMARY BOOM COMPONENTS
3 Z-45/25 Models: Remove the platform leveling
slave cylinder. See 2-2, How to Remove the
Platform Leveling Slave Cylinder.
Z-45/25J Models: Remove the jib boom.
See 3-1, How to Remove the Jib Boom.
4 Remove the cable track. See 4-1, How to
Remove the Cable Track.
5 Raise the primary boom to a horizontal position.
6 Remove the hose and cable cover from the
upper mid-pivot.
7 Remove the pin retaining fastener from the
master cylinder barrel-end pivot pin. Use a soft
metal drift to remove the pin. Then lower the
cylinder and let it hang down.
Component damage hazard.
When lowering the master cylinder
down, be sure not to damage the
master cylinder hoses or fittings.
8 Locate the primary boom drive speed limit
switch inside of the upper mid-pivot.
9 Remove the primary boom drive speed limit
switch mounting fasteners. Do not disconnect
the wiring.
10 Locate the primary boom extension drive speed
limit switch inside of the extension boom.
11 Remove the primary boom extension drive
speed limit switch mounting fasteners. Do not
disconnect the wiring.
7 - 28
12 Pull the limit switch and the wiring out of the
extension tube and move it out of the way.
13 Tag, disconnect and plug the primary boom
extension cylinder hydraulic hoses. Cap the
fittings on the cylinder.
14 Remove the hose clamp at the pivot end of the
boom.
15 Attach a 5 ton (4,536 kg) overhead crane to the
center point of the primary boom.
16 Attach a similar lifting device to the primary
boom lift cylinder.
17 Place support blocks under the primary boom
lift cylinder.
18 Remove the pin retaining fastener from the
primary boom lift cylinder rod-end pivot pin. Use
a soft metal drift to remove the pin.
19 Lower the rod end of the primary boom lift
cylinder onto support blocks. Protect the
cylinder rod from damage.
20 Remove the pin retaining fastener from the
primary boom pivot pin.
Genie Z-45/25 & Genie Z-45/25J
First Edition • Second Printing
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.
Crushing hazard. The boom lift
cylinder and primary boom will fall
unless they are properly
supported.
Part No. 52709