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Service and Repair Manual
October 2019
Boom Components
44
S
®
-80 XC
™
• S
®
-85 XC
™
•
S
®
-
80 HF • S
®
-85 HF
Part No. 1280490GT
9 Locate and remove the counterweight
retaining fastener at the center of the
counterweight. Carefully lift the counterweight
upwards and remove the counterweight from
the machine. Set the counterweight on the
ground. Do not leave the counterweight
suspended above the ground.
Crushing hazard. The turntable
counterweight will fall if not
properly supported by the
overhead crane resulting in
death or serious injury. Keep
personnel away from the area
when removing the
counterweight.
10 Remove the end cover from the pivot end of
the primary boom.
11 Remove the limit switch mounting fasteners
from the limit switch on the ground controls
side of the primary boom. Do not disconnect
the wiring. Remove the limit switch.
12 Disconnect the electrical connector from the
string potentiometer.
13 Disconnect the electrical connector from the
primary boom angle sensor.
Note: The primary boom angle sensor is located on
the pivot pin on the engine side of the boom.
14 Remove the primary boom angle sensor
bracket mounting fasteners and remove the
primary boom angle sensor from the primary
boom. Do not remove the angle sensor from
the bracket.
Note: When the primary boom is installed, the
primary boom angle sensor will need to be
calibrated. Refer to Repair Procedure,
How to
Calibrate the Primary Boom Angle Sensor
.
15 Remove the hose and cable guide fasteners at
the primary boom pivot pin. Remove the hose
and cable guide.
16 Attach lifting straps from a 5 ton / 5000 kg
overhead crane to each end of the boom.
Support the boom. Do not apply any lifting
pressure.
17 Support and secure the rod end of the boom
lift cylinder to a second overhead crane or
similar lifting device.
18 Remove the lift cylinder rod-end pivot pin
retaining fasteners. Use a soft metal drift to
remove the pin.
Crushing hazard. The boom
could fall if not properly
supported when the lift cylinder
rod-end pivot pin is removed.
19 Using auxiliary power, activate the boom down
function so the cylinder will retract. Retract the
cylinder just enough until the rod end of the
cylinder will clear the mounting bracket on the
boom. Turn the machine off.
Crushing hazard. The boom lift
cylinder could fall if not properly
supported and secured to the
lifting device.
20 Using the overhead crane, carefully lower the
boom lift cylinder and allow it to rest on the
boom rest pad. Protect the cylinder rod from
damage.
21 Remove the boom end cover retaining
fasteners and remove the cover.
Содержание Genie S-80 HF Series
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