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6.2 Hydraulic Connections
A high pressure twin hydraulic hose assembly connects
the pump control valve to the cutter. The hoses are
included as part of a hose subassembly that also
contains an electrical cable for the cutter controls. This
subassembly is not included with the cutter and must be
purchased separately.
To facilitate connections, quick-disconnect hydraulic
couplers are present on the hoses, the cutter, and on the
pump control valve.
NOTICE:
WARNING
Hydraulic oil can reach very high
temperatures even when the cutter is idle and cutting
force is not being applied. To prevent burns, always
use suitable personal protective equipment when
connecting or disconnecting couplers on a cutter
that has been in operation.
NOTICE:
WARNING
Never use any hydraulic component
that contains damaged hydraulic couplers. Never
connect or disconnect a hydraulic coupler if the
hydraulic circuit is pressurized. Failure to observe
these instructions may result in the uncontrolled
release of pressurized hydraulic oil. Skin penetration
may occur. Death or serious personal injury could
result.
NOTICE
All hydraulic hoses and fittings used with the
cutter must be rated at 10,150 psi [700 bar] or above.
6.2.1 Connecting the Hydraulic Couplers
1. Be sure that pump motor is stopped.
2. Be certain there is no residual pressure in the
hydraulic circuit. If pressure is present, discharge the
pressure in accordance with the instructions in the
pump instruction sheet.
Repeat steps 3 through 6 for each hydraulic connection.
See Figures 2 and 3 for hookup details.
NOTICE
Before connecting hydraulic hoses, be certain
that the electrical cable (included in hose and cable
subassembly) is properly oriented. Note that electrical
connectors are different on cutter and pump ends.
3. Remove the coupler dust caps.
4. Inspect the couplers after removing the dust caps.
Remove any oil, dust or dirt.
5. Push the male and female couplers firmly together
until engagement occurs.
6. Screw the threaded collar of the female coupler fully
onto the threaded flange of the male coupler. Be sure
that no threads are visible.
6.2.2 Disconnecting the Hydraulic Couplers
1. Be sure that pump motor is stopped.
2. Be certain there is no residual pressure in the
hydraulic circuit. If pressure is present, discharge the
pressure in accordance with the instructions in the
pump instruction sheet.
Figure 2, Hydraulic and Electrical Connections at Cutter (typical)
2
1
Connected View
Key:
1. Hydraulic Hoses and Couplers
2. Electrical Connectors and Cable
