Genie Industries Z-30/20, Руководство по обслуживанию

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Part No. 43063 Genie Z-30/20 7 - 19
Service Manual - Third Edition Section 7 - Repair Procedures
21 Remove the mid-pivot from the machine.
Crushing hazard. The mid-pivot
will fall when the secondary boom
pivot pin is removed from the mid-
pivot if it is not properly supported.
22 Tag, disconnect and plug the hydraulic hoses
from the secondary boom lift cylinder. 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.
23 Remove the retaining fasteners from the
secondary boom lift cylinder rod-end pivot pin.
Do not remove the pin.
24 Support each end of the secondary boom with
a lifting strap from an overhead crane. Lift the
boom slightly to support it.
Crushing hazard. The secondary
boom will fall unless it is properly
supported.
25 Place a block of wood approximately 3 feet
long (0.9 m) across the turntable
counterweights.
26 Support the rod end of the secondary boom lift
cylinder with a lifting device. Use a soft metal
drift to remove the pin.
Crushing hazard. The secondary
boom lift cylinder will fall unless it
is properly supported.
27 Lower the rod end of the secondary boom lift
cylinder onto the wood block.
28 Remove the pin retaining fasteners from the
secondary boom pivot pin at the turntable pivot.
Use a soft metal drift to remove the pin.
If the overhead crane is not
properly attached, the secondary
boom may become unbalanced
and fall when it is removed from
the machine.
29 Remove the secondary boom from the
machine.
30 Attach the strap from an overhead crane to the
secondary boom lift cylinder.
31 Remove the pin retaining fasteners from the
barrel end of the secondary boom lift cylinder
pivot pin. Use a soft metal drift to remove the
pin.
Crushing hazard. The secondary
boom lift cylinder will fall unless it
is properly supported.
32 Remove the cylinder from the machine.
Component damage hazard. Be
sure not to damage the
counterbalance valve block on the
barrel end of the secondary boom
lift cylinder.
33 Attach a lifting strap from an overhead crane to
the mid-pivot end of the tension link.
34 Raise the tension link to a vertical position.
35 Remove the pin retaining fasteners from the
tension link pivot pin at the turntable pivot. Use
a soft metal drift to remove the pin.
If the overhead crane is not
properly attached, the tension link
may become unbalanced and fall
when it is removed from the
machine.
SECONDARY BOOM COMPONENTS