6
General Machine Products Co. Inc.
3111 Old Lincoln Highway Trevose, PA 19053 USA 215-357-5500
face of the chain) coat the guide bars with a rust inhibitor such as LPS 3 Premier rust inhibitor or
equivalent. Reapply the rust inhibitor to prevent corrosion once every month.
To check for the proper oil level in the speed reducer, remove the oil level plug in the side of the
housing, lubricant should be maintained to the height of the oil level opening. Fill to the proper oil
level with 80W140 oil or equivalent
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. Be sure to replace the plug at the top
and on the side of the housing.
7.
Sprocket And Chain Selection
As previously specified, the number of teeth in the roller chain sprockets and the
length of chain is fixed depending on the specific rope diameter being used.
NOTE:
● The WG winch is designed to accept 7/16” diameter wire rope only.
● American produced wire rope is never smaller than the nominal diameter, always larger with
a plus tolerance of 1/32” in the size range used on GMP Adams Winches. Some foreign
product may be smaller.
● Should synchronization difficulty be experienced with standard sprockets, measure the diam-
eter of the wire rope in three locations with a micrometer and contact GMP.
● Sprockets and chains are 5/8” pitch, single width roller chain for the 1
st
and 2
nd
reduction.
● Sprockets and chains are 5/8” pitch, triple width roller chain for the cross chain.
● For the location of sprockets and chains see drawing on page 10.
To change the sprocket ratio to adjust for rope diameter tolerances,
1. Measure the wire rope in three different locations using a micrometer.
2. Contact GMP at 215-357-5500 and provide the wire rope diameter so the proper sprockets can
be determined.
3. Follow the following procedure after the sprockets are received.
Guide Bars
Cross Chain
2nd Reduction
Chain
1st Reduction
Chain
C
Check lubricant
level in gear
box. Fill to level
plug using
80W140 oil or
equivalent
C
Figure 4.
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