Scotchman SHEARMASTER 610, Manual

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THE MOST COMMON HYDRAULIC PROBLEMS ARE:
1. LOW LEVEL OF HYDRAULIC OIL IN THE RESERVOIR: The reservoir holds 24 U.S. Gallons
(91 liters). The level should be approximately 2 inches (50mm) below the top of the reservoir.
2. CONTAMINATION IN THE HYDRAULIC OIL: The oil and the filter should be changed at least
once a year and any time that there is a possibility that contamination has gained access into the
system. For recommended hydraulic oil, SEE SECTION 5.1.
3. LOW PRESSURE CAUSED BY WORN OR DAMAGED PARTS IN THE CYLINDER OR
PUMP:
There is a pressure port for a pressure gauge provided on all machines. The port will be on the
manifold or the pressure line between the pump and the valve. A gauge with a minimum capacity
of 4,000 PSI (275 BAR) is required. With the machine’s power off, install the pressure gauge.
Power the machine and place a piece of steel in the shear section and clamp it down with the
hold-down device. Attempt to shear the piece, watching the pressure gauge for a reading.
The system pressure of this machine should be 3,300 (228 BAR).
The pressure is adjustable by adjusting the shear relief valve adjustment on the control valve
manifold. If the pressure cannot be increased, call your local dealer or the factory.
8.4 HYDRAULICS
shifting the spool, turn the machine on and try it again. If the machine now operates, the
hydraulic oil and filter should be changed.
2. A defective coil on the control valve: The coils can be checked using an Ohm meter. The wires to
the coils must be disconnected. If the ohm reading shows open, the coil is defective and must be
replaced.