43 - 1
Section E
Hydraulics
9803/6400
Section E
43 - 1
Issue 2*
Remote Control Valve JS200/JS240
Maintenance Specifications
Caution 1) It is recommended to replace the 'O'-rings and other seals at each disassembly, but if they are not
damaged, they can be used again.
2) If the hexagonal socket head bolt (125) is loosened, always replace the washer (121).
Maintenance Item Standard Note
Leakage Amount Replace if the leakage exceeds 1000cc/min Condition
with the handle in the neutral position or Primary pressure 30 kgf/cm
2
2000cc/min during operation. (29 bar, 426.6 lb/in
2
)
Oil viscosity 23 cst
Spool Replace when the sliding contact faces are The conditions are
worn more than 10 micron or more than the approximately the same as for
non-sliding contact faces. the leakage above.
Push rod Replace if the tip is
worn more than 1mm.
Play in the Operating Replace the parts if the wear in the pin, shaft
Controls and joint leads to play of more than 2mm.
Actuation Stability Consult Troubleshooting for Hydraulic Pump or
Control Valve if abnormal noises, hunching or
drops in primary pressure are experienced during
operation. Replace the valve if the problem
cannot be solved.
*
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