September 2016
Part No. 1272852
GTH-5519
3-7
Section 3 • Repair Procedures
BOOM COMPONENTS
1-3
Boom Extend Cylinder
How to Remove the
Extend
Cylinder
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 Section 2,
Hydraulic Hose
and Fitting Torque Specifications
.
1 Raise the boom to a horizontal position.
2
2 Extend the boom until you can access the pin
Extend the boom until you can access the pin
""
aa
" locking the cylinder - rod side.
" locking the cylinder - rod side.
3 Tag, disconnect and plug the pipes from the
cylinder shutoff valve. Cap the cylinder fittings.
WARNING
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to
squirt or spray.
4 Remove the retaining fasteners securing the
extend cylinder barrel-end pivot pin.
5 Using a soft metal drift and a hammer, remove
the pivot pin "
a
".
6 Using a soft metal drift and a hammer, remove
the pivot pin "
b
" using the holes on the chassis
using the holes on the chassis
at the rear of the machine.
at the rear of the machine.
7 Partially pull the cylinder out. Using a lifting
strap and an overhead crane, remove the
cylinder.
DANGER
Crushing hazard. The cylinder
could fall if not properly
supported when removed from
the machine.
a
b
