Genie Z-25/8 Service Manual page 130

Section 7 • Repair Procedures
BOOM COMPONENTS
12 Center a lifting strap from an overhead crane to
the upper leveling arm.
13 Use a soft metal drift to remove the upper
leveling arm pivot pin at the mid-pivot. Remove
the upper leveling arm from the machine.
Crushing hazard. If the overhead
crane is not properly attached, the
upper leveling arm could become
unbalanced and fall when it is
removed from the machine.
14 Tag and disconnect the wiring from the flashing
beacon (if equipped).
15 Remove the flashing beacon bracket mounting
fasteners, then remove the flashing beacon
from the machine (if equipped).
16 Remove the pin retaining fasteners from the
rod-end pivot pin of the boom lift cylinder. Use
a soft metal drift to remove the pin.
17 Carefully lay the cylinder against the cross tube
on the lower leveling arm.
18 Remove the retaining fasteners from the
compression arm on the upper boom. Use a
soft metal drift to remove the pin out through
the access holes in the side of the mid-pivot.
19 Center a lifting strap from the overhead crane
to the upper boom.
20 Remove the pin retaining fasteners from the
upper boom pivot pin at the mid-pivot.
7 - 18 Genie Z-20/8N & Genie Z-20/8 & Genie Z-25/8
21 Use a soft metal drift to remove the pin.
Remove the upper boom from the machine.
Crushing hazard. If the overhead
crane is not properly attached, the
upper boom could become
unbalanced and fall when it is
removed from the machine.
22 Attach a lifting strap from an overhead crane to
the top of the mid pivot.
23 Raise the mid-pivot so the lower boom pivot pin
is above the chassis counterweights.
24 Place a 4 x 4 x 36 (10 x 10 x 20 cm) inch block
across the top of the chassis counterweights
and carefully lower the boom assembly onto
the block.
25 Attach a lifting strap from an overhead crane to
the lug on the rod end of the boom lift cylinder.
26 Tag, disconnect and plug the hydraulic hoses
from the 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.
27 Remove the pin retaining fasteners from the
barrel-end pivot pins on the boom lift cylinder.
Use a slide hammer to remove the pins.
First Edition • Third Printing
Part No. 41314