Page 74
34-J Desel - Servce & Parts Manual
December 2021
Secton 18 - Mechancal Components
Boom Extend Cylinder
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 Extend Cylinder is located within the Main Boom assembly. Its purpose is to extend the
inner boom section.
Disassembly
Park the machine on a firm level surface.
Throughout this procedure, 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.
Lower the boom to the stowed position, so that the
boom rests on the turntable.
Use the Boom Extend/Retract function to extend
the boom approximately 5 feet (1.5 m) to expose
the rod pins.
Disconnect all hydraulic hoses. Immediately plug
and cap all openings to prevent contamination.
At the base end of the main boom assembly,
tag and disconnect the wiring harness from the
angle transducers and the Boom Extend proximity
sensor
*
. Remove the angle transducer and the
proximity sensor and mounting plate.
If a Proximity sensor exists.
Ensure that all hydraulic hoses and electrical wiring
near the access hole are out of the path of removal.
1.
2.
3.
4.
5.
6.
*
7.
ART_5722
ART_4929
Remove the retainer ring from one side of the rod-
end pins. Remove the pin using a soft metal drift.
Remove bolt and pin retainer that secure the barrel-
end pin at the rear end of the cylinder. Remove the
pin using a soft metal drift.
8.
ART_5738
Rod-End Pin
Barrel-End Pin
Содержание 34-J Diesel
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