Mec 34-J Diesel, Руководство по обслуживанию и запасным частям

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Page 75 34-J Desel - Servce & Parts Manual
December 2021 Secton 18 - Mechancal Components
Wrap a sling around the cylinder base, then pull the
end of the cylinder approximately 5 feet (1.5 m) out
of the boom. Be careful as the end of the cylinder
comes out through the access hole. 9.
ART_5724
Attach a sling to the cylinder barrel and apply slight
lifting pressure with a forklift or overhead crane.
Use this sling to continue pulling the cylinder out of
the boom. 10.
ART_5725
Pull the cylinder out approximately 10 feet (3 m).
Attach a second sling close to where the cylinder
exits the machine. At this point, it is necessary to lift
the rod end of the cylinder so that the cylinder foot
and slide pad will clear the wearpad bolts inside the
boom. Prior to this point, the weight at the front of
the cylinder had been supported by this foot.
Carefully extract the cylinder completely from the
boom. 11.
12.
ART_5726
Cylinder Foot
IMPORTANT! Measure and record the length of the slightly-extended cylinder for easier reassembly.
Assembly
Assembly is reverse of disassembly.
Examine all pins for signs of wear, surface imperfections, cracks or gray dust in the pivot area.
Replace as necessary.
Extend the cylinder to the length recorded previously to ease reassembly. Ensure that the pin holes at
the rod end are in line with the pin hole at the barrel end.
If necessary, re-connect the hydraulic lines to the Boom Extend Cylinder after the cylinder is secured
at the rear of the boom. Use the Boom Extend/Retract function to extend or retract the cylinder to
proper length for assembly.
Install the pin at the barrel end of the cylinder. Use a pin alignment tool to position one rod end pin
hole, then install the pin in the other hole. Install the second pin at the rod end.
Refer to Section 4 - Torque Specifications of this manual for torque specifications of fasteners.