Genie GTH-1056 Service And Repair Manual page 35

April 2017
1 tube 3 extension chains
2 dual-chain tensioner
3 tube 2 extension chains
4 single-chain tensioner
5 boom tube number 0
6 boom tube number 1
7 boom tube number 2
8 boom tube number 3
6 Working at the fork end of the boom, loosen
evenly the fasteners securing the single-chain
tensioners to the top of boom tube number 0.
After noting the orientation and assembly order
of the components, remove the fasteners and
pull the tensioners free of the boom.
Part No. 1278145
Boom Components
7 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.
8 Repeat this procedure, beginning with step 8,
for the other chains.
9 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.
10 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.
11 Remove the fasteners securing the extension
chain anchors to the boom tubes.
12 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.
13 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.
14 Install the chain anchor, pin and clip onto the
new chain.
15 Remove the rope from the end of the old chain
and securely attach the rope to the new chain.
GTH-1056
Service and Repair Manual
25