December 2019
Service and Repair Manual
Boom Components
Part No. 1285305GT
S
®
-60 J
41
13 Remove the boom lower pivot pin retaining
fasteners. Use a soft metal drift to remove the
pin.
14 Remove the boom upper pivot pin retaining
fasteners. Use a soft metal drift to remove the
pin. Remove the boom from the machine.
15 Using an overhead supporting device, support
one of the pivot levers.
16 Using a soft metal drift, push the pivot pin in
far enough that it can be lowered onto the
boom structure.
Crushing hazard. The pivot lever
could fall if not properly
supported.
17 Using an overhead supporting device, support
the other pivot lever.
18 Using a soft metal drift, finish removing the
pivot pin.
Note: Do not remove the metal drift. Only pull it
back far enough to lower the pivot lever.
Crushing hazard. The timing
link will fall if the metal drift is
removed before it has been
properly supported.
19 Using an overhead supporting device, support
the timing link.
20 Remove the metal drift and lower the timing
link onto the mid-pivot of the boom structure.
21 Using a soft metal drift, remove the pivot pin
securing the boom to the mid-pivot.
Crushing hazard. The boom
assembly will fall if not properly
supported when removed from
the machine.
22 Remove the boom from the machine.
4-3
Boom Lift Cylinder
The primary boom lift cylinder raises and lowers
the primary boom. The primary boom lift cylinder is
equipped with a counterbalance valve 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 hose
end must be replaced. All connections must be
torqued to specification during installation. Refer to
Specifications,
Hydraulic Hose and Fitting Torque
Specifications.
1 Raise the boom until the lift cylinder rod-end
pivot pin is above the side covers.
2 Attach a 5 ton / 5000 kg overhead crane to the
platform end of the boom for support. Do not
apply any lifting pressure.
3 Attach a 5 ton / 5000 kg overhead crane to the
two lifting eyes located at the top of the
mid-pivot. Do not apply any lifting pressure.
Содержание S-60 J
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