Terex Genie Z-34/22DC, Service Manual

Page: 84 / 188

April 2016 Service Manual
Secondary Boom Components
Part No. 139378 Z-30/20N • Z-30/20N RJ • Z-34/22
• Z-34/22N
71
29 Use a soft metal drift to remove the upper
secondary boom compression arm pivot pins
and remove the compression arm from the
machine. Repeat this step for the hydraulic
tank side upper secondary compression arm.
Crushing hazard. The upper
secondary compression arm
could become unbalanced and
fall when removed from the
machine if not properly
supported by the overhead
crane.
30 Close the hydraulic tank shutoff valve. Tag,
disconnect and plug the hydraulic hose from
the hydraulic tank shutoff valve.
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.
31 Open the valve on the hydraulic tank and drain
the oil into a container of suitable capacity.
Refer to Section 2, Specifications.
Bodily injury hazard. Beware of
hot oil. Contact with hot oil may
cause severe burns.
32 Tag, disconnect and plug the hydraulic hose
from the hydraulic tank return filter housing.
Cap the fitting on the filter housing.
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.
Bodily injury hazard. Beware of
hot oil. Contact with hot oil may
cause severe burns.
33 Remove the hydraulic tank mounting
fasteners. Remove the hydraulic tank from the
machine.
34 Open the ground controls side turntable cover.
35 Remove the terminal strip cover retaining
fasteners. Remove the cover.
36 Remove the terminal strip retaining fasteners.
Do not disconnect the wiring.
37 Remove the plastic plug in the bulkhead to
access the secondary boom lift cylinder
rod-end pivot pin.
38 Remove the pin retaining fastener from the rod
end of the secondary boom lift cylinder. Use a
soft metal drift to remove the pin through the
access holes in the bulkheads. Secure the
cylinder from moving.
39 Remove the pin retaining fastener from the
lower pivot pin on the compression link. Use a
soft metal drift to remove the pin.