Rotator Maintenance
Section 6 Page 13
MSD SABER SERIES SHEARS
OPERATING FLOW FOR
INTERNAL ROTATION
The operating fl ow of the Internal Rotation Control
System directly affects the speed at which the shear
will rotate. Two people are necessary to check the
operating fl ow of the Internal Rotation Control Sys-
tem. Install a fl ow meter between the A and B ports
on the Accumulator Control Valve Assembly (these
are the works ports for the valve). The direction in
which the fl ow meter is installed does not matter.
Operate the direction valve by using the foot switch
in the operator’s cab and check the fl ow meter read-
ing. LaBounty recommends that a fl ow of 6 - 10 GPM
(23 - 38 LPM) be maintained.
It may be desirable for you to adjust the fl ow within
the recommended range to increase or decrease the
speed of rotation. To do this, the lock nut on the fl ow
control valve fi rs.t must be loosened. then turn the
fl ow control adjustment knob until you reach the de-
sired fl ow. Make sure to retighten the lock nut when
the adjustments are completed.
Do not exceed 10 GPM (38 LPM) or damage to the
rotation system may result.
OPERATING PRESSURE FOR
INTERNAL ROTATION
To check the operating pressure of the Internal
Rotation Control System, the plug in the gauge port
of the Control Valve Assembly (marked with a “G”)
must be replaced with an adapter fi tting that is com-
patible with the pressure gauge you are using. The
gauge port is a 7/16” - 20 SAE O-Ring Boss threaded
port.
Once the pressure gauge is hooked up to the gauge
port, have the operator start up the base machine.
Cycle the shear until it is either fully open or fully
closed and continue to operate this hydraulic func-
tion even after the jaws have bottomed out. This will
cause the base machine operating pressure to rise
and will enable you to check the operating pressure
of the rotation system.
NOTICE
To adjust the operating pressure, fi rst loosen the
lock nut on the Pressure Reducing Valve (see
Figure
6-8
). Then slowly turn the adjustment screw in the
end of this valve to adjust the pressure until it falls
within the specifi ed range. Retighten the lock nut
when you have completed these adjustments.
The operating pressure of the Internal Rotation
Control System should be 2000 - 2500 PSI (138 - 172
BAR). If your pressure does not fall within this range,
it will be necessary to adjust it or the Rotation sys-
tem may be damaged.
NOTICE
FIGURE 6-8
PRESSURE
REDUCING
VALVE
FLOW
GAUGE
PORT
WORK
PORTS
Содержание MSD 1000
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