Genie GTH-636, Руководство по обслуживанию и ремонту

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Service and Repair Manual April 2018
Boom Components
20 GTH-636 Part No. 1287209GT
How to Disassembl e the Boom
How to Disassemble 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 (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. See the
Repair procedure, How to Remove the
Extension Cylinder.
2 Remove the boom. See the Repair procedure,
How to Remove the Boom.
3 Remove the hose sheave covers from the
hose roller assembly.
Note: The hose covers ensure that the hoses do
not jump off the hose rollers.
4 Working at the pivot end of the boom, remove
the clamps securing the hoses to the inside of
boom tube number 3.
5 Working at the fork end of the boom, remove
the clamps securing the hoses to the inside of
boom tube number 3.
6 Working at the pivot end of the boom, pull the
fork level hydraulic hoses from the boom and
lay them to the side.
7 Working at the pivot end of the boom, remove
the fasteners securing the hose roller
assembly to boom tube number 2. Remove
the hose roller assembly from the boom.
8 Working at the fork end of the boom, loosen
evenly, then remove, the fastener securing the
chain tensioners to the top of boom tube
number 1.
9 Working at the fork end of the boom, remove
the fasteners securing the extension chain
rollers to the top of boom tube number 2.
Remove the chain rollers from the boom.
10 Working at the pivot end of the boom, remove
the fasteners securing the retraction chain
block pivot pin to boom tube number 3.
Remove the pins and pivot pin. Remove the
chain from the roller.
11 Working at the pivot end of the boom, remove
the clips securing the retraction chain roller to
boom tube number 2. Remove the chain roller
from the boom.
12 Working at the fork end of the boom, remove
the wear pads from boom tube number 2.
13 Working at the pivot end, removed the
retainers securing the wearpads, but leave the
wearpads in place. This will insure the boom
will slide out smoothly.
14 Support and slide boom tube number 3 out of
boom tube number 2. Place boom tube
number 3 on a structure capable of supporting
it.
Crushing hazard. Boom tube
number 3 could become
unbalanced and fall when
removed from the boom tube
number 2 if not properly
supported and attached to the
overhead crane.