Section 4 • Repair Procedures
4 - 24
S-80 • S-85 • S-80X
Part No. 122985
February 2012
BOOM COMPONENTS
23 Using the overhead crane, adjust the boom as
necessary to relieve pressure from the pivot
pins.
24 Use a soft metal drift to remove each boom
pivot pin. Carefully remove the boom assembly
from the machine and place it on a structure
capable of supporting it.
Crushing hazard. The boom could
fall if not properly supported by the
overhead crane when each boom
pivot pin is removed.
Crushing hazard. The long and
short link arms may fall if not
properly supported when the
boom pivot pins are removed.
4-3
Boom Lift Cylinder
The boom lift cylinder raises and lowers the boom.
The boom lift cylinder is equipped with
counterbalance valves to prevent movement in the
event of a hydraulic line failure.
How to Remove the Boom
Lift 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 the
hose end must be replaced. All connections must
be torqued to specification during installation.
Refer to Section 2,
Hydraulic Hose and Fitting
Torque Specifications.
1 Raise the boom to a horizontal position.
2 Attach a 5 ton / 5000 kg overhead crane to the
boom at the platform end for support. Do not lift
the boom.
3 Support and secure both ends of the boom lift
cylinder to a second overhead crane or similar
lifting device.
4 Remove the pin retaining fastener from the
boom lift cylinder rod-end pivot pin. Use a soft
metal drift to remove the pin.
Crushing hazard. The boom will
fall if not properly supported when
the primary boom rod-end pivot
pin is removed.
Содержание S-80
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