General Machine Products 70524 Adams CD3 Continuous Duty Winch - Manual (Page 3)

AK 7/18/2012 ver 5
SCOPE - This document contains information pertinent to the Installation, Operation and Maintenance of the Adams®
Model CD3 Continuous Duty Winch. The CD3 winch manufactured by General Machine Products Co., Inc. commenc-
ing in January 1, 1995 differ significantly from prior generations of Adams CD Winches in equipment design and compo-
nents. To obtain information on earlier model CD, LCD or UG winches, please contact the factory for the appropriate
manual.
1. GENERAL
- The information contained in this revision pertains exclusively to the Adams ® Model CD3 Con-
tinuous Duty Winches manufactured after January 1, 1995 which have serial numbers of 95-1100 and higher.
1.01 WINCH
APPLICATION - The winch has been specifically designed for placing communication cable and
electrical conductors. However, its robust construction and SAE Continuous Duty rating makes the CD3 suitable for
most applications where a long, continuous pull is required.
CAUTION -THE WINCH WAS NOT DESIGNED FOR, NOR INTENDED TO BE USED FOR THE
MOVEMENT OF PEOPLE. NEVER USE THE WINCH FOR MOVING PEOPLE.
In the typical automotive application, the winch is driven hydraulically. The truck engine provides the prime source of
power connected through a split shaft or side mount power take-off to a hydraulic pump. The pump provides hydraulic
pressure and flow sufficient to drive the winch hydraulic motor that is mounted to the full load brake that is coupled di-
rectly to the winch gearbox.
1.02
WINCH MAJOR COMPONENTS
1.03
WINCH CLUTCH GENERAL INFORMATION - The clutch provides a means of transferring the torque
from the drum shaft to the winch drum. The clutch plate is actuated by an air cylinder. (This air shift mechanism replaces
the mechanical linkage used on older models for clutch actuation.) When the winch clutch is disengaged, the drum will
rotate freely on the drum shaft. Power can still be transmitted through the drum shaft to the drum shaft extension to drive
a capstan or reel while the clutch is disengaged. To help determine clutch position, engaged or disengaged, electronic
clutch position sensing is an available option. See section 3.03.
1.04
CALIPER TYPE, FREE SPOOL CONTROL (DRAG) BRAKE - Under rapid winch line payout conditions,
it is extremely important to operate the caliper brake properly, taking care to maintain sufficient tension on the wire rope.
This will enable the level-wind assembly to operate properly, minimize over-spinning of the drum, and help to prevent
erratic lays of winch line on the drum.
All CD3 units are factory equipped with a caliper type drag brake assembly. The caliper brake is controlled by a hydraulic
actuator (supplied) that is intended to be mounted with the winch controls.
The purpose of the caliper brake is to control the speed of the winch drum when in the free spool mode. Movement of the
actuator lever will force the brake pads together, applying friction to the drum brake rotor thereby reducing the drum
speed. Continued movement of the control lever will eventually force drum rotation to stop.
CAUTION THE DRAG BRAKE IS USED TO CONTROL THE DRUM SPEED ONLY. IT IS NEVER
TO BE USED TO HOLD THE LOAD.
The brake assembly is mounted at the factory on two studs attached to the hanger on the right side of the
3
 Gearbox  Hydraulic Motor
 Wire Rope Drum  Hanger
 Clutch Assembly  Mounting Brackets
 Free Spool Control Brake  Drum Guard
 Level Wind Assembly  Drum Shaft Extension
 Full Load Brake