Allied Systems AW3CP1A1556R11, Operating Manual

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1
General
Introduction
This Operating Manual contains basic information
necessary for the operation and maintenance of the W3C
winch.
How the Winch Operates
A winch is normally installed on a skidder or tractor to:
• increase the pulling power of the skidder or tractor.
• reach into an area where a skidder or tractor cannot go.
• make lift functions available when special attachments
are installed.
The winch has a hydraulic clutch that is similar to a
hydraulic (powershift) transmission. Each tractor and
skidder has a power take-off (PTO) that is used to connect
the power from the engine to the winch. The
SCH (Self
Contained Hydraulics) indicates that the entire hydraulic
system that controls the winch is inside the winch case.
When the PTO is operating, a hydraulic pump in the winch
case takes hydraulic oil from the winch sump and sends it
to the hydraulic control valve. The hydraulic control valve
controls the operation of the winch.
The PTO is connected to the winch’s input shaft. The input
shaft turns the housing of the clutch. When the clutch is
applied, power is transmitted by the gears to the drum. As
the drum rotates, wire rope is pulled into the winch.
The W3C winch has the following operations:
• LINE-IN (For “PFR” Line-in/Line-out)
• BRAKE-ON
• FREESPOOL
• BRAKE-OFF
General