Terex Genie Z-45 DC, Руководство по обслуживанию и ремонту, Страница: 44 / 140

34 Z
®
-45 DC • Z
®
-45 FE Part No. 1297714GT
July 2020 Service and Repair Manual
WARNING
Crushing hazard. The lift cylinder
could become unbalanced and
fall if not properly supported and
secured to the lifting device.
The primary boom extension cylinder extends and
retracts the primary boom extension tube. The
primary boom extension cylinder is equipped with
counterbalance valves to prevent movement in the
event of a hydraulic line failure.
WARNING
Bodily injury hazard. This
procedure requires specific
repair skills, lifting equipment
and a suitable workshop.
Attempting this procedure
without these skills and tools
could result in death or serious
injury and significant component
damage. Dealer service is
strongly recommended.
Note: When removing a hose assembly or fitting,
the O-ring (if equipped) on the fitting and/or hose
end must be replaced. All connections must be
torqued to specification during installation. Refer to
Specifications,
Hydraulic Hose and Fitting Torque
Specifications.
1 Raise the primary boom to a horizontal
position.
2 Extend the primary boom until the primary
boom extension cylinder rod-end pivot pin is
accessible in the primary boom extension tube.
3 Remove the hose and cable guard from the
upper pivot.
4 Tag, disconnect and plug the primary boom
extension cylinder hydraulic hoses. 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.
5 At the platform end of the boom, remove the
external snap rings from the extension cylinder
rod-end pivot pins. Use a soft metal drift to
remove the pins.
6 Remove the barrel-end pivot pin retaining
fasteners.
7 Place a rod through the barrel-end pivot pin
and twist to remove the pin.
8 Support and slide the extension cylinder out of
the upper pivot.
WARNING
Crushing hazard. The extension
cylinder could fall when removed
from the extension boom if not
properly supported.
NOTICE
Component damage hazard.
Be careful not to damage the
counterbalance valves on the
primary boom extension cylinder
when removing the cylinder from
the primary boom.
Primary Boom Components