Operation And Control; Power Controls; Electronic Controls; Description Of Operations - Allied Systems W8L Service Manual

General

Operation and Control

Power Controls

The control lever assembly has a power control lever
for winch control (See Figure 1-8). If the winch does
not have the FREESPOOL function, the second control
lever is not used. Both control levers are connected to
the winch through control cables. The power control
lever is connected to the spool in the control valve. The
power control lever is used to select one of the following
operations:
BRAKE-OFF
LINE-OUT
BRAKE-ON
LINE-IN

Electronic Controls

The electronic control assembly has one control lever (See
Figures 1-9 and 1-10). The control lever is connected to
the winch through electrical wiring, an electronic control
module and a solenoid-actuated control valve. This lever
is used to select one of the following operations:
BRAKE-OFF
LINE-OUT
BRAKE-ON
LINE-IN
1 - 8
BRAKE
OFF
LINE
OUT
NORMAL
OPERATION
BRAKE
ON FREESPOOL
LINE
IN
FREESPOOL
CONTROL
READ OPERATING
INSTRUCTIONS
271731W
Figure 1-8 Typical Winch Power Controls
BRAKE
OFF
LINE
OUT
NORMAL
OPERATION
BRAKE
ON FREESPOOL
LINE
IN
FREESPOOL
CONTROL
READ OPERATING
INSTRUCTIONS
271731W
1. Power Control Lever
2. Freespool Lever (Optional)

Description of Operations

BRAKE-OFF is the only detented position on the
handlever (electronic controls) or control lever (power
controls), and the operator must pull the lever to release
it from that position. A spring arrangement on the lever
returns the lever from the LINE-IN and LINE-OUT
positions to the BRAKE-ON position. With the lever in
the BRAKE-OFF position, oil pressure releases the brake
but wire rope cannot be pulled from the winch by hand
because of friction in the clutches, brake and gear train.
The BRAKE-OFF position is used when the operator has
a load attached to the winch wire rope. The operator can
move the tractor forward without moving the load.
LINE-OUT position applies the reverse clutch and
releases the brake. The winch will unwind the wire rope
at a speed controlled by the PTO speed of the tractor and
the weight of the load.
BRAKE-ON is a neutral position. No hydraulic pressure
is applied to the brake or the clutches. Springs apply the
brake so that the winch drum will not rotate.
LINE-IN position applies the forward clutch and releases
the brake. The winch will wind the wire rope at a speed
controlled by the PTO speed of the tractor.
Inching is used for fi ne control of the load. When the
control lever is slowly moved to a position between
BRAKE-ON and LINE-IN or between BRAKE-ON and
LINE-OUT, inching occurs.
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