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CHAINLUBRICATION
The load chain and chain attachment pins must, be kept clean and lubricated at all times. Unlubricated Chain will wear out
in a very few capacity lifts. Failure to maintain clean lubricated Chain will void the Manufacturer’s Warranty and cause chain
wear which will make operation of the Hoist hazardous. Use an open chain lubricant or any good EP gear oil. Several excel-
lent types of open chain lubricants are available and can be purchased in convenient aerosol cans.
CHAINREPLACEMENT
Excessive Chain wear cannot be detected by casual observation. The Chain is case hardened to a depth of .0l0” to .012”,
and once this case is worn through, wear will progress rapidly and the strength of the Chain will be considerably reduced. Fur-
ther, the Chain will no longer fit the Chain Wheel properly, greatly increasing the chance of malfunction and Chain breakage.
Periodically, as experience dictates, examine the Chain for wear. Be certain to inspect that portion of the Chain which reg-
ularly passes over the Chain Wheel, since this is the portion that suffers the greatest wear. Check the individual links for stria-
tion-that is, minute parallel lines indicating excessive stress or wear.
Suspend a light load (SO to 100 pounds) from the Hoist and measure the Chain over the outside of the specified number
of links.
The Chain must be measured over its entire working length-that is, over that portion of Chain which continuously passes
over the Chain Wheel. When any number of links in the working length reaches or exceeds the discard length, replace the en-
tire Chain. Always use a genuine Ingersoll-Rand replacement Chain. Never use any other Chain.
GAUGE LENGTH OVER N LINKS
WITH LIGHT LOAD SUSPENDED
FROM HOOK
(Dwg. TPD635-1)
DIMENSIONS OF LINK - INCHES
N
DISCARD
NUMBER LENGTH
NOMINAL
INSIDE OUTSIDE OF
OVER N LINKS,
WIRE DIAMETER
PITCH
WIDTH WIDTH LINKS
INCHES
1/4
.767 .298 .823
7
5.89
One Chain Wheel will outlast several Chains if the Chain is replaced as recommended, whereas the use of a worn Chain will
cause the Chain Wheel to wear rapidly.
If the Chain is visibly damaged, examine the Chain Wheel and Chain Guard. Install a new Chain Wheel if the old one is
visibly worn; install a new Guard if the old one is broken or distorted.
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