Genie Z-30/20N Service Manual page 86

April 2016
51 Use a slide hammer to remove the barrel-end
pivot pins (access the pins from the access
holes in the bulkheads, one on each side).
Remove the secondary boom lift cylinder from
the machine.
Crushing hazard. The secondary
boom lift cylinder could become
unbalanced and fall when
removed from the machine if not
properly attached to the
overhead crane.
52 Attach a lifting strap from an overhead crane
to the mid-pivot for support.
53 Remove the pin retaining fasteners from the
mid-pivot to the lower secondary compression
arm pivot pins. Use a slide hammer and
remove the pins. Lower the compression arms
down.
54 Remove the pin retaining fasteners from the
mid-pivot to the lower secondary boom pivot
pin. Use a soft metal drift to remove the pins.
55 Remove the mid-pivot from the machine.
Crushing hazard. The mid-pivot
could become unbalanced and
fall when removed from the
machine if not properly
supported by the overhead
crane.
56 Remove the secondary boom drive speed limit
switch (LS4) mounted to the turntable riser on
the ground controls side. Do not disconnect
the wiring.
Part No. 139378
Secondary Boom Components
Z-30/20N • Z-30/20N RJ • Z-34/22 • Z-34/22N
57 Attach a lifting strap from an overhead crane
to the ground control side lower secondary
boom compression arm.
58 Remove the pin retaining fastener from the
lower secondary boom compression arm to
turntable riser pivot pin.
59 Use a slide hammer and remove the pin.
Remove the compression arm from the
machine. Repeat for the hydraulic tank side
lower secondary boom compression arm.
Crushing hazard. The lower
secondary compression arm
could become unbalanced and
fall when removed from the
machine if not properly
supported by the overhead
crane.
60 Attach a lifting strap from an overhead crane
to the lower secondary boom.
61 Remove the pin retaining fastener from the
lower secondary boom to turntable riser pivot
pin. Use a soft metal drift to remove the pin.
62 Remove the lower secondary boom from the
machine.
Crushing hazard. The lower
secondary boom could become
unbalanced and fall when
removed from the machine if
not properly supported by the
overhead crane.
Service Manual
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