Genie Z80/60 Service Manual page 124

Section 4 • Repair Procedures
PLATFORM COMPONENTS
12 Support the platform rotator. Do not apply
any lifting pressure.
13 Remove the pin retaining fasteners from the jib
boom and jib boom leveling arms to platform
rotator pivot pins. Do not remove the pins.
14 Support the jib boom leveling arms with a
suitable lifting device.
15 Use a soft metal drift to remove both pins and
remove the platform rotator from the machine.
Crushing hazard. The jib boom
leveling arms may fall if they are
not properly supported when the
jib boom leveling arm pivot pin is
removed.
Component damage hazard. The
platform angle sensor is a very
sensitive instrument. It can be
damaged internally if the platform
rotator is dropped or sustains any
physical shock, even if the
damage is not visible.
How to Bleed the Platform
Rotator
Before serial number 229:
Note: Do not start the engine. Use auxiliary power
for all machine functions in this procedure.
1 Connect a clear hose to the top bleed valve.
Place the other end of the hose in a container
to collect any drainage. Secure the container to
the boom.
2 Move the platform rotate switch to the left and
then to the right through two platform rotation
cycles, continue holding the switch to the right
until the platform is fully rotated to the right.
4 - 22
3 Open the top bleed valve, but do not remove it.
4 Move the platform rotate switch to the left until
the platform is fully rotated to the left. Continue
holding the switch until air stops coming out of
the bleed valve. Close the bleed valve.
Crushing hazard. Keep clear of
the platform during rotation.
5 Connect the clear hose to the bottom bleed
valve. Open the bottom bleed valve, but do not
remove it.
6 Hold the platform rotate switch to the right until
the platform is fully rotated to the right.
Continue holding the switch until air stops
coming out of the bleed valve. Close the bleed
valve.
Crushing hazard. Keep clear of
the platform during rotation.
7 Remove the hose from the bleed valve and
clean up any hydraulic oil that may have spilled.
8 Rotate the platform full right, then full left and
inspect the bleed valves for leaks.
After serial number 228:
1 Rotate the platform full right, then full left until
air is completely out of the rotator. Bleeding the
valve is not necessary.
Crushing hazard. Keep clear of
the platform during rotation.
Z-80/60
June 2011
REV C
Part No. 88619