Genie GTH-1048 Service Manual page 68

Service Manual
Boom Components
7 GTH-1048: Working at the fork end of the
boom, loosen the fasteners securing the
single-chain tensioners to the top of boom
tube number 1. After noting the orientation
and assembly order of the components,
remove the fasteners and pull the tensioners
free of the boom.
GTH-1048
1 extension chains
2 single-chain tensioner
3 boom tube number 1
4 boom tube number 2
5 boom tube number 3
8 Select a chain tensioner. Remove the bow tie
clip securing the chain anchor pin to the chain
assembly. Remove the chain anchor pin from
the assembly and remove the chain anchor
from the tensioner assembly.
9 Repeat this procedure, beginning with step 8,
for the other chains.
56
10 Working at the fork end of the boom, select a
chain. 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.
11 GTH-1056: Remove the inspection cover from
the pivot end of the boom and locate the chain
anchors of the extension chains at the top of
boom tubes 2 and 3.
GTH-1048: Remove the inspection cover from
the pivot end of the boom and locate the chain
anchors of the extension chains at the top of
boom tube 3.
12 Remove the fasteners securing the extension
chain anchors to the boom tubes.
13 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.
14 On a workbench, remove the bow tie clip
securing the chain anchor pin to the chain
assembly. Remove the pin and chain anchor
pin from the assembly.
15 Install the chain anchor, pin and clip onto the
new chain.
16 Remove the rope from the end of the old
chain and securely attach the rope to the new
chain.
17 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.
18 Working at the pivot end of the boom and
using the fasteners removed in step 12, install
the chain anchor onto the boom tube.
Securely tighten the fasteners. Do not over
tighten.
GTH-1048 • GTH-1056
March 2016
Part No. 123701
Courtesy of Crane.Market