Terex Genie S-60 HF, Руководство по обслуживанию и ремонту

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April 2021 Service and Repair Manual
Boom Components
Part No. 1288652GT S ® -60/65 XC ™ • S ® -60/65 HF • S ® -60/65 TraX ™ 53
4-4 Boom Extension Cylinder 4-4
Boom Extension Cylinder
The boom extension cylinder is located inside the
boom assembly and incorporates cables and
pulleys that are responsible for extending the
number 3 boom tube. The primary boom extension
cylinder is equipped with counterbalance valves to
prevent movement in the event of a hydraulic line
failure.
How to Remove the Boom
Extension Cylinder
Bodily injury hazard. This
procedure requires specific repair
skills, lifting equipment and a
suitable workshop. Attempting
this procedure without these
skills and tools could result in
death or serious injury and
significant component damage.
Dealer service is strongly
recommended.
Note: When removing a hose assembly or fitting,
the O-ring (if equipped) on the fitting and/or hose
end must be replaced. All connections must be
torqued to specification during installation. Refer to
Specifications,
Hydraulic Hose and Fitting Torque
Specifications.
Note: Perform this procedure with the boom fully
retracted.
1 Raise the boom to a horizontal position.
2 Remove the boom end cover from the pivot
end of the boom while guiding the small cable
from the string potentiometer out of the slot of
the cover. Rest the cover and string
potentiometer on the counterweight.
Component damage hazard. The
cable from the string
potentiometer can become
damaged if it is kinked or pinched.
3 Remove the string potentiometer cable break
limit switch mounting fasteners.
4 Remove the pulley retaining plate from the
string potentiometer pulley bracket. Carefully
remove the string potentiometer cable and
limit switch assembly from the boom.
5 Remove the access covers from both sides of
the boom at the pivot end.
6 Fully loosen the lock nuts on the extend
cables. Do not remove the nuts.
7 Loosen the retract cable nut at the platform
end of the boom. Pull the cable rod from the
support and let it hang down.
8 Remove the cable guard fasteners and
remove the cable guard.
1 cable guard
2 retaining block
9 Locate the retaining plates that secure the
retract cables to the inside of the number
3 boom tube.
10 Remove the cable retaining plates and pull
the retract cables off of the pulleys. Lay the
cables flat and out of the way.