Genie GTH-1048 Service Manual page 66

Service Manual
Boom Components
12 Using a strap from an overhead crane,
support the extend cylinder. Do not apply any
lifting pressure
13 Working at the fork end of the boom, remove
the fasteners securing the boom extend
cylinder pivot pin to the boom.
14 Use a soft metal drift to remove the pivot pin.
Lower the cylinder just enough for access to
the chain anchor bolts.
15 Working at the fork end of the boom, securely
connect a 30 foot / 10 m length of rope to the
end of the chain. Securely tie off the other end
of the rope to the boom structure.
16 Working at the pivot end of the boom, pull the
chain out of the boom.
Note: Rope coming loose from the chain during
removal may result in a difficult reassembly. Be
sure the rope is securely attached to the chain and
boom structure before pulling the chain out of the
boom.
17 Remove the rope from the end of the chain
and securely attach the rope to the new chain.
18 Working at the fork end of the boom, use the
rope to carefully pull the chain through the
boom just until the end of the chain is
accessible. Remove the rope from the chain.
19 Working at the pivot end of the boom, install
the chain anchor into the chain anchor mount.
Secure the chain anchor to the mount using
the pivot pin and fasteners removed in step
11. Securely tighten the fasteners. Do not
over tighten.
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20 Working at the pivot end of the boom, route
the chain over the roller and install the chain
onto the boom assembly using the pivot pin
removed in step 11. Securely tighten the
fasteners. Do not over tighten.
21 GTH-1056: Repeat this procedure, beginning
with step 11, for the remaining chain anchor.
22 Install the inspection cover, removed in step
9, onto the boom. Install and securely tighten
the fasteners. Do not over tighten.
23 GTH-1056: Working at the fork end of boom
tube number 1, install the dual-chain tensioner
into the tensioner mount. Install the mounting
components, removed in step 6, and securely
tighten the fasteners.
24 GTH-1056: Install the chain tensioners into
the tensioner mount at the fork end of boom
tube number 0. Install the mounting
components, removed in step 7. Evenly
tighten the chain tensioners to the top of the
boom tube until they are securely tightened.
25 GTH-1048: Install the chain tensioners into
the tensioner mount at the fork end of boom
tube number 1. Install the mounting
components, removed in step 8. Evenly
tighten the chain tensioners to the top of the
boom tube until they are securely tightened.
26 Adjust the chains. Refer to Maintenance
Procedure, Adjust the Boom Sequencing
Chains.
GTH-1048 • GTH-1056
March 2016
Component damage hazard.
Chains can be damaged if the
boom is used while the chains
are out of adjustment. Do not
return the machine to use until
the chains have been correctly
adjusted.
Part No. 123701
Courtesy of Crane.Market