Terex Genie 20N RJ, Service And Repair Manual

Page: 52 / 117

Service and Repair Manual September 2021
Secondary Boom Components
40 Z®-30/20N • Z®-30/20N RJ • Z®-34/22 • Z®-34/22N Part No. 1268498GT
40 Attach a lifting strap from an overhead crane
to the upper secondary boom.
41 Remove the pin retaining fastener from the
mid-pivot to upper secondary boom pivot pin.
Use a soft metal drift to remove the pin.
42 Remove the upper secondary boom with
compression link from the machine.
Crushing hazard. The upper
secondary boom with compression
link could become unbalanced and
fall when removed from the
machine if not properly supported
by the overhead crane.
43 Z-30N and Z-30N RJ: Remove the mounting
fasteners from the counterweight attached to
the lower leveling link.
44
Z-30N and Z-30N RJ:
Attach a lifting strap
from an overhead crane to the counterweight.
Remove the counterweight from the lower
leveling link.
Tip-over hazard. The
counterweight is critical to
machine stability. If the
counterweight is not installed
during reassembly of the
machine, the machine will
become unstable and tip over.
Crushing hazard. The
counterweight could become
unbalanced and fall when
removed from the machine if not
properly supported by the
overhead crane.
45 Remove the mounting fasteners from the
function manifold and slide the function
manifold to the side. This will allow access to
the secondary boom lift cylinder barrel-end
pivot pin.
46 Remove the mounting fasteners from the
auxiliary power unit. Do not disconnect the
electrical cables or hydraulic hoses.
47 Slide the auxiliary power unit to the side to
access the other secondary boom lift cylinder
barrel-end pivot pin.
48 Remove the retaining fasteners from the
secondary boom lift cylinder barrel-end pivot
pins.
49 Attach a lifting strap from an overhead crane
to the lug on the rod end of the secondary
boom lift cylinder.
50 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.