Genie GTH-636 Service Manual page 83

June 2007
REV C
25 Raise the fork end of the number 1 boom tube
assembly slightly and remove the boom rollers
from the number 0 boom tube.
26 Support and slide the numbers 1, 2 and 3 boom
tube assemblies out of the number 0 boom
tube. Place the numbers 1, 2 and 3 boom tube
assemblies on a structure capable of
supporting it.
Crushing hazard. The numbers 1,
2 and 3 boom tube assemblies
could become unbalanced and fall
when removed from the number 0
boom tube if not properly
supported and attached to the
overhead crane.
Note: During removal, the overhead crane strap
will need to be adjusted for proper balancing.
27 Remove the chain tensioner from the end of
both number 2 boom tube extension chains.
28 Remove the cable track mount bracket from the
rear of the number 1 boom tube.
29 Remove the chain or device securing the
booms together.
30 Evenly remove the fasteners securing the chain
tensioners of the boom tube 3 extension chains
to the number 1 boom tube.
31 Remove the fasteners securing the fixed chain
block of the number 3 boom tube retraction
chain to the top of the number 1 boom tube
near the fork end of the tube.
Note: The fixed chain block of the number 3 boom
tube retraction chain is secured to the inside of the
number 1 boom tube and is hidden from view when
installed.
Part No. 97487 GTH-636 • GTH-644 • GTH-842 • GTH-844 • GTH-1048 • GTH-1056
Section 4 • Repair Procedures
32 Remove the hose manifolds from the top of the
number 1 boom tube. Tag, disconnect and plug
the hoses from the hose manifolds. Cap the
fittings.
Component damage hazard.
Hoses can be damaged if they are
kinked or pinched.
33 Remove the fork level cylinder hoses from the
boom assembly.
34 Extend the number 2 boom tube approximately
12 inches / 30 cm.
35 Remove the chain rollers from the top of the
number 1 boom tube at the front of the boom.
36 Remove the wear pads of the number 1 boom
tube at the front end of the boom.
37 Manually return the boom tubes to the stowed
position.
38 Using a chain of sufficient capacity, secure
together the numbers 2 and 3 boom tubes.
39 Attach a lifting strap from an overhead crane to
the numbers 2 and 3 boom tube assemblies at
the fork end of the boom.
40 Support and slide the numbers 2 and 3 boom
tube assemblies approximately halfway out of
the number 1 boom tube.
Crushing hazard. The boom
assembly could become
unbalanced and fall when the
numbers 2 and 3 boom tubes are
moved if not secured together.
BOOM COMPONENTS
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