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4
CYLINDERS
DISASSEMBLY AND ASSEMBLY
This chapter describes mainly the procedure for the swing
cylinder. When disassembling/assembling a cylinder, check
its construction against the construction diagram on the
preceding page.
Disassembly
Cylinder assembly
1. Keep the cylinder in a level position by securing the
clevis of the tube in a vise and placing a wooden sup-
port under the other end.
2. Drain the remaining hydraulic oil from the cylinder.
• Move the piston rod slowly to prevent the hydraulic
oil from spurting out.
3. Disengage the anti-rotation lock of the rod cover.
• Since the anti-rotation lock is built into the cylinder
tube, take care not to damage the tube when disen-
gaging the lock.
4. Loosen the rod cover.
• Pull out the piston rod approximately 200 mm be-
for
ehand.
• Cover the piston rod to protect it from dents.
5. Pull out the piston rod assembly from the tube.
• Pull it out straight so as not to damage the sliding
surface.
Piston rod assembly
1. Secure the piston rod assembly in a level position.
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