43 - 1
Maintenance Specification
Section E Hydraulics
9803/6410
Section E
43 - 1
Issue 1
Remote Control Valve (Services)
Maintenance Item
Leakage Amount
Spool
Plunger
Loose movement in the
operating controls.
Actuation stability.
Standard
Replace if the leakage exceeds 1.0 litre/min
(0.22 gal/min) with the handle in the neutral
position or 2.0 litre/min (0.44 gal/min)
during operation.
Replace when the sliding contact faces are
worn more than 0.01 mm (0.0004 in) or
more than the non-sliding contact faces.
Replace if the
tip is worn
more than 1
mm (0.039 in).
Replace the parts if the wear in the pin and
joint lead to loose movement of more than
2 mm (0.079 in).
Investigate if abnormal noises, jerky
operation or drops in primary pressure are
experienced during operation. Replace the
valve if the problem cannot be solved.
Note
Condition:
Primary pressure 29 bar
(30 kgf/cm
2
426.5 lbf/in
2
).
Oil viscosity 23 cSt.
The conditions are approximately
the same as for the leakage
above.
Note: Ensure that ‘O’-rings and other seals are renewed during reassembly. If the body assembly screw 6 is loosened, always
replace the ‘O’-ring 7.
JS02060
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