8
General Machine Products Co. Inc.
3111 Old Lincoln Highway Trevose, PA 19053 USA 215-357-5500
slight amount of tension until required again and will prevent the rope from unwinding or “clock
-springing.”
8.2 Winch drum rotation:
Note: The CD3 is available in an UNDER WIND and OVER WIND configuration
The WG winch is only available in an UNDER WIND configuration.
Over winding – is when the winch drum rotates in a clockwise direction (viewing from the right
side) and the wire rope is spooled onto the winch drum at the top. It is imperative that the wire
rope be attached to the correct side of the drum for the specific direction of the lay of the rope
given the direction of drum rotation. When the drum will be over winding as the wire rope is
spooled in, use the rope clamp on the side of the drum which is the same as the lay of the wire
rope. For example, if using right lay rope on an over wind drum attach the wire rope to the right
side rope clamp.
Under winding – is when the winch drum rotates in a counterclockwise direction (viewing from
the right side) and the wire rope is spooled onto the winch drum at the bottom. Once again, it is
imperative that the wire rope be attached to the correct side of the drum for the specific direction
of the lay of the rope given the direction of drum rotation. When the drum will be under winding
as the wire rope is spooled in, use the rope clamp on the side of the drum which is opposite of
the lay of the wire rope. For example, if using right lay rope on an under wind drum attach the
wire rope to the left side rope clamp.
The wire rope must be guided and maintained as it is routed forward under the body deck to the
winch drum. This can be done by using a trough or tube with sufficient width at the front and
depending on the angle of incline combined with the body cross-member configuration, a float-
ing sheave or roller may be required. Application engineering assistance is available from GMP.
WARNING! The cable clamp alone is not designed to hold the rated load. Approximately ½ of the
first layer of winch line must be left on the drum to achieve the rated load and avoid
cable clamp failure.
9 Lubrication:
● Wire rope is considered to be a machine, having many moving parts. Each time the rope
bends or flexes, the various wires and strands slide over each other. Lubrication is required
to facilitate this movement.
● The type of lubricant, method of applying and frequency of application is dependent on each
particular circumstance. For specific lubrication details contact the wire rope manufacturer.
10 Repair Parts:
● For item location, refer to Page 9.
● For part identification refer to parts list on Pages 10 thru 12.
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