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HG3555A/42306 Portable Power Unit
Hose Connections
Do not disconnect tool, hoses, or fittings while the power unit is running or if the hydraulic fluid is hot.
Exposure to hot hydraulic fluid can cause serious burns.
Figure 3 shows the power unit being used with a typical
tool.
Connecting Hoses (See Figures 1 and 3)
1. Stop the power unit.
2. Connect the return (tank) hose from the power unit
port to the tool return port (T).
Note: Return (tank) hose connection should always
be connected before pressure (supply) hose
connection to prevent pressure build-up inside
the tool.
3. Connect the pressure (supply) hose from the power
unit pressure port to the tool pressure port (P).
Disconnecting Hoses (See Figures 1 and 3)
1. Stop the power unit.
2. Disconnect the pressure (supply) hose from the
power unit pressure port to the tool pressure
port (P).
Note: Pressure (supply) hose connection should always
be disconnected before return (tank) hose
connection to prevent pressure build-up inside
the tool.
3. Disconnect the return (tank) hose from the power
unit return port to the tool return port (T).
4. To prevent contamination, always install dust caps
over the hydraulic ports of the tool, hoses, and
power unit when disconnected.
Greenlee Textron / Subsidiary of Textron Inc.
FLOW
METER
RETURN
PRESSURE
PORT
PORT (5 GPM)
CONTROL
VALVE
R
P
RELIEF
VALVE
2000 PSI
ENGINE
POWER
UNIT
Hydraulic Schematic
7
4455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
RETURN
PORT
TYPICAL
TOOL
PRESSURE
PORT
PRESSURE
PORT (10 GPM)
PRESSURE
PORT (5 GPM)
CONTROL
VALVE
C2
C2
R
C1
C1
P
RELIEF
VALVE
2000 PSI
PUMP
OIL
COOLER
FILTER
(10 NICRON)
Figure 3
RETURN
PORT
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