McIntyre 320 - The Shear Runs too Slowly; Loss of Power When Cutting Heavy Items; The Shear will Not Repeat Stroke; The Hydraulic Fluid Becomes Aerated or Frothy

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320/407/500/600.41912-ENG
6.1.2. The Shear runs too slowly
A. Check D to I as for 6.1.1.
6.1.3. Loss of power when cutting heavy items
A. Check that the clearance between the Foot Pedal Plate and Housing is not less
than 6mm (0.25in) when in the fully depressed position, (See Section 6.9.2, Page
42).
B. Check D to I as for 6.1.1.
C. Check Motor to Pump Drive Coupling for slippage.
6.1.4. The Shear will not repeat stroke.
A. Examine the Stroke Adjuster Springs. Replace if squashed or damaged.
B. Ensure the Foot Pedal is free to move and that the Foot Pedal Cable is correctly
connected and undamaged.
6.1.5. The Hydraulic Fluid becomes aerated or frothy
A. Hydraulic uid return line hose from the Control Valve to the Hydraulic Tank is
loose. Check all hoses are undamaged and correctly tightened.
B. Hydraulic Pump shaft seals worn out. Replace the Hydraulic Pump
6.1.6. The Motor trips out due to overload or overheating
A. Ensure the items being sheared are within the capabilities of the Shear.
B. Check the Motor Fan Blades and air passageways are clear from dust and debris.
C. To reset the overload press the Stop Button and wait 10 seconds before restarting
the Shear.
6.1.7. The Motor trips out repeatedly
A. Check A & B as for 6.1.6.
B. Have a qualied electrician check the overload settings, the incoming voltage
supply, and all connections for corrosion which could cause a voltage drop.