Takeuchi TB175W, Руководство по ремонту

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HYDRAULIC UNITS
CYLINDERS
IV-104
TB175W
DISASSEMBLY AND ASSEMBLY
Special Tools
See the table of special tools at the back of this section
for the jigs and tools used for disassembly and assem-
bly.
General Cautions
• Carry out disassembly and assembly operations in
a clean place and provide clean containers to place
the disassembled parts in.
• Before disassembly, clean around the ports and
remove the paint from each joint using a wire
brush.
• Clean all disassembled parts in cleaning solvent.
Use a lint free cloth, or air dry the parts.
• Make match marks on each part so that they will be
assembled in the same positions when assembled.
• Replace all seals with new ones each time the
hydraulic units is disassembled.
• Check each part to make sure there is no abnormal
wear or seizing and use sandpaper, etc. to remove
any burrs, sharp edges, etc.
• Do not turn adjusting screws if not required.
• Apply hydraulic oil to sliding surfaces and apply a
thin coating of grease to seals when assembling
them.
In this manual, the procedure for the arm cylinder is
described. When necessary, the points which are
different in other cylinders are mentioned.
Disassembly
Cylinder Assembly
1. Fasten the clevis of the tube in a vice and place the
other end on a support block made of wood to
fasten the cylinder in a horizontal condition.
2. Drain out hydraulic oil remaining in the cylinder.
• Move the piston rod gently to prevent the
hydraulic oil from spraying out and scattering
all over.
3. Free the locked portion of the rod cover.
• Since the lock is integrated with the cylinder
tube, be careful not to bend it or to scratch it
when the lock is being freed.
4. Loosen the rod cover.
• The piston rod should be pulled out approxi-
mately 200 mm beforehand.
• Measures should be taken to prevent the piston
rod from being hit.