Terex Genie Z-34/22DC, Service Manual

Page: 88 / 188

April 2016 Service Manual
Secondary Boom Components
Part No. 139378 Z-30/20N • Z-30/20N RJ • Z-34/22
• Z-34/22N
75
9 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.
10 Remove the hydraulic tank mounting
fasteners. Remove the hydraulic tank from the
machine.
11 Open the ground controls side turntable cover.
12 Remove the terminal strip cover retaining
fasteners. Remove the cover.
13 Remove the terminal strip retaining fasteners.
Do not disconnect the wiring.
14 Remove the plastic plug in the bulkhead to
access the secondary boom lift cylinder
rod-end pivot pin.
15 Remove the mounting fasteners from the
function manifold and slide the manifold to the
side This will allow access to the hydraulic
tank side barrel-end pivot pin.
16 Attach a lifting strap from an overhead crane
to the lug on the rod end of the secondary
boom lift cylinder.
17 From the bottom side of the cylinder, remove
the retaining fasteners from the secondary
boom lift cylinder barrel-end pivot pins.
18 Remove the hose clamp under the lower
secondary boom.
19 Use a slide hammer to remove both barrel-end
pivot pins (access the pins from the access
holes in the bulkheads, one on each side).
20 Remove the pin retaining fastener from the
secondary boom lift cylinder rod-end pivot pin.
21 Use a soft metal drift to remove the secondary
boom rod-end pivot pin.
Crushing hazard. The secondary
boom lift cylinder may fall when
the rod-end pivot pin is removed
if not properly supported by the
overhead crane.
22 Carefully lower the cylinder down through the
secondary boom, enough to access the
hydraulic hoses. Do not pinch the hoses.
Component damage hazard.
Hoses can be damaged if they
are kinked or pinched.