Troubleshooting - Greenlee Quick Draw 90 7906SB Instruction Manual

Troubleshooting

PROBLEM
Will not punch hole.
Requires excessive lever force.
Pump will not build pressure.
Excessive number of strokes
strokes are required to punch
hole.
Greenlee Textron / Subsidiary of Textron Inc.
Find Quality Products Online at:
7904SB/7906SB Hydraulic Punch Driver
PROBABLE CAUSE
Improper assembly or use of punch,
die or accessories.
Improper assembly or use of punch,
die or accessories.
Air in system.
Inoperative intake check valve.
Inoperative discharge check valve.
Leaking Release Valve.
Damaged piston, piston extension,
pump plunger seals or mating surfaces.
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www.
See Operating Instructions and
Capacity Chart.
Low oil level. See Adding Hydraulic Oil
in Maintenance Section.
See Operating Instructions and
Capacity Chart.
Material being punched is too thick or
too hard. See Capacity Chart.
See step 3, Adding Hydraulic Oil.
See Inspection and Adjustments,
Intake Check Valve Inspection.
See Inspection and Adjustments,
Discharge Check Valve Inspection.
See Inspection and Adjustments,
Release Valve Inspection.
See Maintenance and Repairs, Cylinder
and Pump Block sections.
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POSSIBLE REMEDY
sales@GlobalTestSupply.com