Page 78
45-J Desel - Servce & Parts Manual
January 2022
Secton 18 - Mechancal Components
Boom Lift Cylinder/Boom Linkage
THIS PROCESS REQUIRES SPECIFIC REPAIR SKILLS AND
EXPERIENCE, APPROPRIATE LIFTING EQUIPMENT AND A PROPER
WORKPLACE������ DEATH, SERIOUS INJURY OR SIGNIFICANT MACHINE
DAMAGE COULD OCCUR IF YOU ATTEMPT THIS PROCESS WITHOUT
THE APPROPRIATE SKILLS AND EQUIPMENT������
The Boom Lift Cylinder is located within the boom linkage near the turntable. The purpose is to raise
and lower the boom assembly.
Art 5506
Note:
The module doors and module contents are omitted from the following illustrations to better
show the disassembly process. It is not necessary to remove the doors or contents to perform
this procedure.
Disassembly
Park the machine on a firm level surface.
Thoroughly clean all hydraulic connections and tag all hoses for proper reassembly before
disconnecting them. Immediately plug and cap all openings to prevent contamination. Tag
electrical connections before disconnecting them.
Remove the Platform/Jib assembly as described in steps 1 through 12 of the Platform Level
Cylinder removal procedure on page 74.
Use the Boom Lift/Lower function to position the boom as shown at right.
Remove the hose and cable guards and coverings. It is not necessary to remove the cable track
or its contents from the Main Boom Assembly.
Make note of all cable and hose routing from the turntable to the main boom assembly.
Disconnect the hoses and control cable connected to the Platform Functions Manifold, located at
the base of the Main Boom Assembly. Pull these down through the linkage back to the turntable.
Disconnect the power-to-platform cable and the platform control cable from their connections
in the turntable and the Control Module. Pull these up through the linkage to the Main Boom
Assembly.
1.
2.
3.
4.
5.
6.
7.
8.
