General Machine Products 70530 Adams WG Winch - Manual (Page 18)

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7.04 ADJUSTMENT
The speed reducer input and output single width roller chain drives should be tight enough to prevent back lash
but not excessively tight to cause bending of the reducer shafts.
The triple width cross chain should be sufficiently tight to prevent tipping of the guide link. An unsteady movement
of the carriage could indicate a loose cross chain or lack of lubrication on the guide bars.
If the cross chain requires tightening, it should be adjusted an equal amount at both ends by the corresponding
adjusting screw. Or, the distance from the back of the chain to the inside of the drum must be equally spaced.
Before any adjustment is made to the cross chain, the chain drive from the speed reducer must be loosened.
To check for equal spacing, rotate the drum one revolution taking a measurement at four locations. The mean di-
mension will compensate for any distortion in the drum flanges. The cross chain assembly can then be shifted by
turning the adjusting screws at each end after the lock nuts have been loosened.
If the rope has a tendency to pile up at one end and leave an opening at the other end, the cross chain should be
shifted slightly away from the end where the rope piles up.
The cross chain length is for an average width drum. If the rope piles up at both ends of the drum, the cross travel
speed is too slow. Or, the cross chain length is too long. Remove one pitch and check.
If the rope leaves an opening at both ends of the drum, the cross chain length is too short. Add one pitch and
check.
7.05 LUBRICATION
The level-wind assembly should be lubricated every 3 months or 75 hrs of operation. Use a good grade of engine
oil in four oil cups, three roller chains (lubricated on the Inside surface of the chain).
Coat the guide bars with a rust inhibitor such as LPS 3 Premier rust inhibitor or equivalent. Reapply the rust inhibi-
tor to prevent corrosion once every month.
The speed reducer should be filled to the proper oil level with heavy gear oil or equal.
To check for the proper oil level in the reducer, remove the oil level plug in the side of the housing. The lubricant
should be maintained to the height of the oil level opening.
To add oil, remove the oil level plug in the side of the housing. Remove the oil filler plug at the top of the housing.
Add oil to the height of the oil level opening. Fill lo level plug using the same type lubricant that’s used in the winch
drive case.
7.06 SPOOLING
Wire rope is specified by length, diameter, number of strands, and number of wires per strand, type of center and
type of lay. The purpose here is to stress the importance of selecting the correct type of lay.
There is a distinct advantage in applying wire rope of the proper direction of lay when spooling onto a smooth sur-
face winch drum. When rope, having an improper lay, is used the coils will spread apart each time the load is re-
moved. Using rope with the proper lay will keep the coils together when the load is removed, developing a tight,
even layer.
Under winding is when the wire rope is spooled onto the winch drum at the bottom.
When wire rope is under wound onto the drum, a right lay rope should attach to the left side of the drum and spool
to the right. A left lay rope should attach to the right side of the drum and spool to the left.
7.07 INSTALLATION
It is important to install the wire rope onto the winch drum with care. Kinking of the rope, caused by the rope taking
a spiral shape as a result of an unnatural twist, should be avoided.
When removing wire rope from the reel and spooling onto the winch drum, the reel must be in a vertical plane and
free to rotate.
Spool the rope onto the drum with the natural bend in the same direction as it was on the reel.
If the wire rope is received in a coil, it should be unwound with the coil in the vertical plane. Spool the rope onto
the drum with the natural bend in the same direction as it was on the coil.
Reverse bending of the wire rope should always be avoided or kept to a minimum.
Wire rope should always be under tension when spooling onto the winch drum.
7.08
WIRE ROPE LUBRICATION
Wire rope is considered to be a machine, having many moving parts. Each time the rope bends or flexes, the vari-
ous wires and strands slide over each other. Lubrication is required to facilitate this movement. The type of lubri-
cant, method of applying and frequency of application is dependent on each particular circumstance. For specific
lubrication details contact the wire rope manufacturer.