How To Replace The Extension Chains - Genie GTH-1056 Service And Repair Manual

Service and Repair Manual
Boom Components
19 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 10. Securely tighten the
fasteners. Do not over tighten.
20 Repeat this procedure, beginning with step 10,
for the remaining chain anchor.
21 Install the inspection cover, removed in step 8,
onto the boom. Install and securely tighten the
fasteners. Do not over tighten.
22 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.
23 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.
24 Adjust the chains. Refer to Maintenance
Procedure in the appropriate Service or
Maintenance Manual for your machine, Adjust
the Boom Sequencing Chains.
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.
24
How to R eplac e the Extension C hai ns
How to Replace the Extension
Chains
Note: Perform this procedure on a firm, level
surface with the boom in the stowed position and
the wheels chocked.
1 Start the engine and allow the engine to idle.
2 Raise the boom to a horizontal position.
3 Fully retract the boom.
4 Turn the machine off and remove the key from
the key switch.
5 Working at the fork end of the boom, loosen
the fasteners securing the dual-chain
tensioner to the top of boom tube number 1.
After noting the orientation and assembly order
of the components, remove the fasteners and
pull the tensioner free of the boom.
GTH-1056
April 2017
Part No. 1278145