Terex Genie Z-33/18, Руководство по обслуживанию и ремонту

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3-22 Z ® -33/18 Part No. 1268514GT
January 2020 Section 3 • Repair Procedures
The primary boom lift cylinder raises and lowers
the primary boom. The primary boom lift cylinder is
equipped with a counterbalance valve 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.
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 .
1 Raise the primary until the lift cylinder rod-end
pivot pin is above the turntable covers.
2 Attach a 5 ton / 5000 kg overhead crane to the
primary boom for support.
3 Using the overhead crane, raise the primary
boom slightly to take the pressure off the
primary boom lift cylinder pivot pins.
4 Support both ends of the primary boom lift
cylinder with a second overhead crane or
similar lifting device.
5 Tag, disconnect and plug the primary boom lift
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.
6 Remove the pin retaining fasteners from the
primary boom lift cylinder rod-end pivot pin.
Use a soft metal drift to remove the pin.
WARNING
Crushing hazard. The primary
boom will fall if not properly
supported when the primary
boom rod-end pivot pin is
removed.
7 Lower the rod end of the lift cylinder. Protect
the cylinder rod from damage.
WARNING
Crushing hazard. The primary
boom lift cylinder could fall if not
properly supported.
8 Remove the primary boom lift cylinder barrel
end pivot pin retaining fasteners. Use a slide
hammer to remove the barrel-end pivot pin.
Carefully remove the primary boom lift cylinder
from the machine.
WARNING
Crushing hazard. The lift cylinder
could become unbalanced and
fall if not properly supported and
secured to the lifting device.
WARNING
Crushing hazard. The primary
boom could fall if not properly
supported by the overhead
crane.
PRIMARY BOOM COMPONENTS