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I
~
GREENLEE" Quick Dra~
Hydraulic Punch
D
Maintenance
Maintenance and. repairs s~o.uld be performed in a dust-
Oil Leaks
free area by qualified technicians.
.
Check for external oil leaks.
This unit requires minimum maintenance because it
.
Check that the release valve knob and stem
are
has a closed hydraulic system and all internal parts
closed tightly and seating properly.
are lubricated by the hydraulic fluid. Lubricate lever pins
.
.
lightly. Keep contaminants away from the ram and
.
Remove the reservoir handle and check
for 011 leaks
cylinder. Store with the lever down and hydraulic
around the rubber bladder and bladder plug.
pressure released.
Ram Section Will Not Rotate
1
Adding Hydraulic Oil
(7904SB I 79065B Only)
1. Place the driver in a vise in a vertical position with
1.
Loosen and readjust the set screw.
the handles up. Unscrew the reservoir handle and
2. Hold the punch driver with the ram section
down.
remove the bladder plu~. Open the release valve
3.
Apply a small amount of penetrating oil to the
knob to assure the ram IS fully extended.
cylinder at the attachment point, and then
work"
2.
Fill the rubber bladder to the point of overflow with
ram section back and forth.
Greenlee hydraulic oil.
4. Apply a small amount of SAE 30 oil to the
cytindl'
3.
Purge air from the system:
collar next to the pump block.
Pump the lever handle several times to remove air
from the pumping chamber. Close the release valve
knob and pump the lever handle until the ram
completes its full travel. Repeat as necessary.
Note: Open the release valve knob slowly so the
ram extends slowly. Rapid return of oil and air may
cause the oil to overt/ow the rubber bladder.
If this procedure fails to remove air, remove the
bladder plug and open the release valve knob. Place
thumb over the plug hole in the bladder and squeeze
the bladder while pumping the lever handle several
times. Close the release valve knob and pump the
lever handle until the ram completes its full travel.
Repeat as necessary.
4.
Fill the rubber bladder to the point of overflow and
-
replace the bladder plug. Wipe the bladder clean of
excess oil and reassemble the reservoir handle.
Reservoir Handle
. -
Lever Handle
g
Bladder Plug
Rubber Bladder
Release Valve Knob
Greenlee Textron I Subsidiary of Textron Inc.
8
4455 Boeing Dr.
. Rockford,
IL 61109-2988 USA .81
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