September 2016
Part No. 1272856
GTH-1256
3-11
Section 3 • Repair Procedures
1-3
Boom Extend Cylinder ET
How to Remove the Extend
Cylinder
Note: When removing a hose assembly or
fi
tting,
the O-ring on the
fi
tting and/or hose end must be
replaced and then torqued to speci
fi
cation during
installation. Refer to Section 2, Hydraulic Hose
and Fitting Torque Speci
fi
cations.
9 Raise the boom to a horizontal position. Extend
the boom enough to access the extend cylinder
pivot pin.
10 Remove the retaining fasteners securing the
extend cylinder rod end pivot pin.
11 Using a soft metal drift and a hammer, remove
the pivot pin.
12 Remove the retaining fasteners that secure the
cylinder retainer.
13 Place a container of suitable size under the
hydraulic hoses before disconnecting.
14 Tag, disconnect and plug the hydraulic hoses
from the extend cylinder. Cap the cylinder
fi
ttings.
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.
NOTICE
Component damage hazard.
Hoses can be damaged if they
are kinked or pinched.
15 Remove the retaining fasteners securing the
extend cylinder barrel end pivot pin.
16 Using a soft metal drift and a hammer, remove
the pivot pin.
17 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.
BOOM COMPONENTS
