Terex Genie GTH1056, Service And Repair Manual

Page: 36 / 155

Service and Repair Manual April 2018
Boom Components
26 GTH-1056 Part No. 1287211GT
How to Disassembl e the Boom - GTH-1056
How to Disassemble the Boom -
GTH1056
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 Remove the extension cylinder. Refer to
Repair Procedure, How to Remove the
Extension Cylinder
.
2 Remove the boom. Refer to Repair
Procedure, How to Remove the Boom .
3 Select a lift cylinder. Remove the fasteners
securing the lift cylinder rod-end pivot pin to
the boom.
4 Using a lifting strap from an overhead crane,
support the lift cylinder. Do not apply any lifting
pressure.
5 Use a soft metal drift to remove the lift cylinder
rod-end pivot pin. Remove the cylinder from
the boom.
Crushing hazard. The cylinder
could become unbalanced and
fall if not properly supported
when removed from the
machine.
6 Repeat this procedure beginning with step
3 for the other lift cylinder.
7 Remove the fastener securing the fork level
cylinder rod-end pivot pin to the fork frame
mount.
8 Use a soft metal drift to remove the rod-end
pivot pin.
9 Attach a lifting strap from an overhead crane
to the barrel end of the fork level cylinder.
Support the cylinder. Do not apply any lifting
pressure.
10 Tag, disconnect and plug the fork level
cylinder hoses from the cylinder manifolds.
Cap the fittings.
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.
Component damage hazard.
Hoses can be damaged if they
are kinked or pinched.
11 Remove the fasteners securing the fork level
cylinder barrel-end pivot pin to the boom.
12 Use a soft metal drift to remove the pivot pin.
Remove the cylinder from the machine.
Crushing hazard. The cylinder
could fall if not properly
supported when the pivot pin is
removed from the machine.
13 Remove the inspection cover at the pivot end
of the boom.