Terex Genie Z-33/18, Service And Repair Manual

Page: 51 / 117

January 2020
Part No. 1268514GT Z
®
-33/18 3-29
Section 3 • Repair Procedures
The secondary boom lift cylinder raises and lowers
the secondary boom. The secondary boom lift
cylinder is equipped with a bi-directional solenoid
valve to prevent movement in the event of a
hydraulic line failure.
When removing a hose assembly or fitting, the
O-ring on the fitting and/or hose end must be
replaced and then torqued to specification during
installation. Refer to Section 2,
Hydraulic Hose
and Fitting Torque Specifications .
Perform this procedure on a firm, level surface,
with the boom in the stowed position.
1 Attach a lifting strap of suitable capacity from
an overhead crane to the mid-pivot.
2 Tag, disconnect and plug the hydraulic hoses
on the lift cylinder. Cap the fittings on the
cylinder.
WARNING
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.
3 Attach a lifting strap of suitable capacity from
an overhead crane to the secondary boom lift
cylinder.
4 Remove the pin retaining fasteners from the
secondary boom lift cylinder rod-end and
barrel-end pivot pins.
SECONDARY BOOM COMPONENTS
5 Using a soft metal drift, remove the secondary
boom lift cylinder pins.
WARNING
Crushing hazard. The cylinder
could fall if not properly
supported when the pivot pins
are removed.
6 Carefully remove the cylinder from the
machine.
WARNING
Crushing hazard. The lift cylinder
could become unbalanced and
fall if not properly supported
when removed from the
machine.
NOTICE
Component damage hazard. The
solenoid valve can be damaged.
Use caution when removing the
cylinder from the machine.