3 - 34
S-100 • S-105 • S-120 • S-125
Part No. 1268494
March 2017
Section 3 • Repair Procedures
BOOM COMPONENTS
How to Remove the Boom
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 on the fitting and/or hose end must be
replaced and then torqued to specification during
installation. Refer to Specifications,
Hydraulic
Hose and Fitting Torque Specifications.
1 Remove the platform. See Repair Procedure,
How to Remove the Platform
.
2 Remove the platform rotator. See Repair
Procedure,
How to Remove the Platform
Rotator
.
3
S-105 and S-125 models:
Remove the Jib
Boom. See 3-1,
How to Remove the Jib Boom.
4 Remove the cable track. See Repair Procedure,
How to Remove the Boom Cable Track.
5 Raise the boom approximately 4 feet / 1.2 m.
6 Attach a lifting strap from an overhead crane to
the rod end of the boom lift cylinder.
7 Attach an overhead
10 ton / 10,000 kg crane to
the platform end of the boom for support. Do
not lift the boom.
8 Remove the boom storage area cover retaining
fasteners. Remove the cover from the machine.
9 Place support blocks under the boom lift
cylinder.
10 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 lift
cylinder may fall when the rod-end
pivot pin is removed if the boom lift
cylinder is not properly supported
by the overhead crane.
Crushing hazard. The boom
may fall when the rod-end pivot
pin is removed if the boom is
not properly supported by the
overhead crane.
11 Carefully raise the boom with the overhead
crane until the rod end of the boom lift cylinder
can be removed.
12 Carefully lower the rod end of the boom lift
cylinder down onto the support blocks.
13 Lower the boom with the overhead crane to a
horizontal position.
14 Remove the boom end cover retaining fasteners
from the pivot end of the boom. Remove the
cover.
15 Locate the cable break limit switch above the
primary boom extension cylinder at the pivot
end of the boom.
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