Greenlee / A Textron Company 14 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
980 Hydraulic Power Pump
Troubleshooting—Hydraulic Pump (cont’d)
Ram will not hold pressure. System has an external leak. Visually inspect hoses, connectors
and fittings for leaking hydraulic fluid.
Replace faulty components.
Manual control valve needs
See Hydraulic Schematic (8) and refer
adjustment or repair.
to Figures A2 and A3 in the Repairs
section of this manual.
The manual control valve is not in Rotate the manual control valve to
correct position. AUTO RELEASE position.
The manual control valve needs to be See Manual Release/Automatic
adjusted. Release Valve Handle Setting,
Figure A3 in the Repairs section of
this manual.
Check ball does not seat properly. See Manual Release/Automatic
Release Valve Handle Setting,
Figure A2, and Ball Seat
Refinishing, Figure B4 in the Repairs
section of this manual.
PROBLEM PROBABLE CAUSE POSSIBLE REMEDY
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