Terex Genie Z-34/22, Service And Repair Manual

Page: 47 / 131

October 2021 Service and Repair Manual
Secondary Boom Components
Part No. 1268515GT Z ® -34/22 Bi-Energy 35
16 Carefully lift the secondary and primary boom
assembly until the master and primary lift
cylinder hydraulic hoses are accessible.
17 Remove the cable covers from the top of the
upper secondary boom.
18 Tag, disconnect and plug the primary boom
lift cylinder and master cylinder hydraulic
hoses.
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.
19 Lower the booms to the stowed position.
20 Pull all the cables and hoses through the
upper mid-pivot.
Component damage hazard.
Cables and hoses can be
damaged if they are kinked or
pinched.
21 Position the strap from the overhead crane
approximately two feet from the platform end
of the primary boom. Measure from the end of
the primary boom tube.
22 Remove the pin retaining fasteners from the
upper pivot to upper compression arm pivot
pins. Use a soft metal drift to remove the pins.
23 Swing the compression arms down and out of
the way. Secure them from moving.
24 Remove the pin retainers from the upper pivot
to upper secondary boom pivot pin. Use a soft
metal drift to remove the pin.
25 Carefully remove the entire primary boom
assembly from the machine (primary boom
assembly, jib boom assembly, platform,
master cylinder, primary lift cylinder and upper
pivot).
Crushing hazard. If the overhead
crane is not properly attached,
the primary boom assembly
could become unbalanced and
fall when it is removed from the
machine. Do not remove the
assembly from machine until it is
properly balanced.
26 Place the entire assembly onto a structure
capable of supporting it.
27 Remove the pin retaining fasteners from the
upper compression arm pivot pins. Do not
remove the pins.
28 Position the lifting strap from an overhead
crane at the center of the control box side
upper compression arm, then remove it from
the machine. Repeat this step for the engine
side upper compression arm.
Crushing hazard. If the overhead
crane is not properly attached,
the upper compression arm
could become unbalanced and
fall when it is removed from the
machine.
29 Remove the pin retaining fastener from the
rod end of the secondary boom lift cylinder.
Use a soft metal drift to remove the pin.
Secure the cylinder from moving.
30 Remove the pin retaining fastener from the
lower pivot pin on the compression link. Use a
soft metal drift to remove the pin.
31 Attach the strap from an overhead crane to
the upper secondary boom.