Genie GTH-1048, Service Manual

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Section 4 • Repair Procedures March 2015
Part No. 123701 GTH-1048 • GTH-1056 4 - 7
BOOM COMPONENTS
9 Remove the inspection cover from the pivot end
of the boom.
10 GTH-1056: Locate the two chain anchors of the
boom retraction chains where they attach to the
chain anchor mount at the lower side of boom
tube 2 and 3. Refer to Illustration 3.
GTH-1048: Locate the chain anchor of the
boom retraction chain where it attaches to the
chain anchor mount at the lower side of boom
tube 3. Refer to Illustration 4.
11 Select a chain anchor. Remove the fasteners
securing the chain anchor pivot pin to the
anchor mount of the boom tube. Remove the
pivot pin and pull the chain anchor free of the
mount.
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.
Illustration 3
a chain anchor - boom tube number 3
b chain anchor - boom tube number 2
Illustration 4
a chain anchor
b
a
a