B-38 REGULAR INSPECTION
15. ADJUSTING THE SETTING PRESSURE
15.1 Adjusting Hydraulic Unit Main Pressure
The hydraulic unit main pressure is factory-set to the required value. It is not necessary to set or
adjust the main pressure when the machine is installed.
Adjusting the main pressure is necessary when the piston pump is replaced.
The pilot valve provided on the pump unit is used to adjust the main pressure.
Make sure that no workpiece is mounted in the chuck when checking the main pressure.
<Procedure>
1) Turn on the power.
2) Loosen the lock nut of the main pressure adjusting
screw.
3) Turn the main pressure adjusting screw while
checking the pressure with the pressure gage.
For the setting pressure, refer to the
HYDRAULIC UNIT DIAGRAMS in the
DRAWINGS published separately.
4) Tighten the lock nut after adjusting the main
pressure.
WARNING
Operating the machine while the pressure gages (hydraulic and air) do not
indicate the correct values could lead to serious injuries and damage to
the machine. If the gages do not indicate the correct values, adjust them
by following the procedure below.
NOTE
Decrease
Increase
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