Greenlee 767 - Operation and Maintenance; Operating the Hydraulic Hand Pump; Filling the Pump with Oil

767 Hydraulic Hand Pump
Greenlee / A Textron Company 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
4
Operation
1. Remove the dust cap.
2. Connect the hose to the punch driver or cable
cutter.
Note: Hand-tighten the couplers completely.
Do not use tools.
3. Twist the release knob (16) to CLOSE.
4. Pump the lever (1) until the operation is complete.
5. Twist the release knob (16) to OPEN.
6. Disconnect the hose from the punch driver or cable
cutter. Replace all dust caps.
Note: After replacing any component of the
hydraulic system, the reservoir may not have enough
oil to complete the operation. Refer to Filling the
Pump with Oil.
Filling the Pump with Oil
1. Clamp the pump into a vise with the machined
reservoir end upward.
2. Unscrew machined reservoir (22) from the pump
block (23) and gently remove machined reservoir.
3. Inspect rubber bladder (12), bladder plug (14) and
position and condition of O-ring (13). Replace if
damaged or worn.
4. Pour Greenlee hydraulic oil* into the rubber bladder
(12) until oil comes to the top of the plug hole.
5. Turn the release knob (16) to OPEN. Pump the lever
(1) two or three times.
6. Turn the release knob (16) to CLOSE. Pump the
lever (1) two or three times.
7. Slowly turn the release knob (16) to OPEN. This will
allow any trapped air to escape.
Note: Do this slowly to prevent the oil from
suddenly gushing up through the bladder plug hole.
8. Repeat steps 5 through 7 one or two more times.
9. To eliminate all air from the bladder, do one of the
following:
• Slowly add oil to the bladder until the oil level
rises to the plug hole.
• Squeeze the bladder until the oil level rises to the
plug hole.
10. Replace the bladder plug (14) in hole in the rubber
bladder (12) being careful not to spill any oil.
11. Carefully wipe any excess oil from the outside of
the rubber bladder (12) and replace the machined
reservoir (22). Wipe any excess oil from outside of
machined reservoir (22).
* Order Greenlee hydraulic oil by the gallon
(90510593) or by the quart (90508068).