Section 1
1 - 17
Sequence of Operation - LINE-IN, K371 and L39
Pulling the control lever toward the operator commands
the tractor ripper valve to send oil fl owing to the winch,
through the counterbalance relief manifold and to the motor
“A” port. At the same time, pilot pressure from the control
lever applies pressure to the RI port, through the shuttle
valve, to the brake valve. At the set pressure, the brake
valve directs pilot fl ow to release the brake.
If the operator selects
HI-SPEED
mode by the rocker
switch on the control panel, an electric solenoid valve on
the control manifold sends pilot pressure to the C port
on the motor. The spool shifts to close half of the power
cavities in the motor. Full pump fl ow now fl ows through the
motor at half displacement, thus doubling the output rpm.
If the winch is pulling a load, the pressure at a pressure
switch on the CBR manifold will increase. When pulling a
heavy load, the pressure switch, which is normally closed,
will open. This will disable
HI-SPEED
mode, forcing the
motor to maximum displacement (low speed, high torque)
ensuring that the winch can pull the load.
Summary of Contents for H5C Series
Page 8: ...vi Notes...
Page 48: ...General 1 40 Notes...
Page 59: ...Troubleshooting 2 6 Notes...
Page 77: ...Service 3 18 Notes...
Page 86: ...Section 4 4 9 Intentionally Blank...
Page 104: ...Section 4 4 27 Intentionally Blank...
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