Leaf Chain Care, Maintenance, and ReplacementLeaf Chain Care, Maintenance, and Replacement
The leaf chain (or chains) on your Taylor material handling equipment was selected based on thou-The leaf chain (or chains) on your Taylor material handling equipment was selected based on thou-
sands of hours of safe operation over many years of fork lift trucks working in various types of materialsands of hours of safe operation over many years of fork lift trucks working in various types of material
handling operations.handling operations.
The entire chain system, including chain anchors, anchor supports, bearings, and chain rollers, isThe entire chain system, including chain anchors, anchor supports, bearings, and chain rollers, is
sized for the basic model capacity and load center shown on the serial plate.sized for the basic model capacity and load center shown on the serial plate.
The utility of fork lift truck type material handling equipment requires it to operate under a wide varietyThe utility of fork lift truck type material handling equipment requires it to operate under a wide variety
of load conditions. of load conditions. These vary from a few low lifThese vary from a few low lifts to a very large number of high lifts ts to a very large number of high lifts per operatingper operating
hour.hour.
The leaf chain is subjected to all the variations of environment, such as moisture, chemicals, tempera-The leaf chain is subjected to all the variations of environment, such as moisture, chemicals, tempera-
ture extremes, abrasives, and evture extremes, abrasives, and even salt water in some applications. en salt water in some applications. The chain cannot have the bene-The chain cannot have the bene-
fit of a protective coating (paint) and must depend onfit of a protective coating (paint) and must depend on proper lubricationproper lubricationfor combating the effect offor combating the effect of
these conditions. these conditions. The lubrication The lubrication program greatly afprogram greatly affects chain fects chain life.life.
The utility of the lift truck requires it to operate with a variety of attachments, such as forks, coil rams,The utility of the lift truck requires it to operate with a variety of attachments, such as forks, coil rams,
paper roll clamps, containers, marinas, and other attachments, all of which will place different dynamicpaper roll clamps, containers, marinas, and other attachments, all of which will place different dynamic
loads and load requirements on the hoist chains.loads and load requirements on the hoist chains.
This wide variety of variables makes it impossible for Taylor to accurately predict an exact service lifeThis wide variety of variables makes it impossible for Taylor to accurately predict an exact service life
of the leaf chain on of the leaf chain on the Tthe Taylor material handling equipment. aylor material handling equipment. Therefore,Therefore, the following procedure ofthe following procedure of
inspection and replacement is recommended to avoid sudden failure.inspection and replacement is recommended to avoid sudden failure.
Maintenance and Replacement of the Leaf ChainMaintenance and Replacement of the Leaf Chain
In addition to the daily walk-around inspections, at eachIn addition to the daily walk-around inspections, at each 500500hours of operation, the chain should behours of operation, the chain should be
thoroughly cleaned and inspected for elongation, pin rotation and protrusion, cracked plates, enlargedthoroughly cleaned and inspected for elongation, pin rotation and protrusion, cracked plates, enlarged
holes, worn contour and wholes, worn contour and worn surfaces on outside liorn surfaces on outside links or pin heads. nks or pin heads. If any of the abovIf any of the above aree are
observed,observed, replace the entire length of both chains.replace the entire length of both chains. (Illustrations are on the following pages under(Illustrations are on the following pages under
Modes of Chain Failure.)Modes of Chain Failure.)
Careful visual inspectionCareful visual inspection of both inside and outside of the chain links where possible will revealof both inside and outside of the chain links where possible will reveal
some of these early indications of chain failure which may result in total chain breakage if left in ser-some of these early indications of chain failure which may result in total chain breakage if left in ser-
vice.vice.
NOTE:NOTE: A hand-held mirror can aid A hand-held mirror can aid tremendously in hard to tremendously in hard to see areas.see areas.
Particular attention should be given to that part of the chain which passes over the chain roller theParticular attention should be given to that part of the chain which passes over the chain roller the
most frequently when under load.most frequently when under load.
It will be necessary to move the carriage to several locations and block it to prevent any possibility ofIt will be necessary to move the carriage to several locations and block it to prevent any possibility of
falling to gain the best possible visual access to the greatest number of pitches of chain.falling to gain the best possible visual access to the greatest number of pitches of chain.
Aft th h iAft th h i i i t d di i t d d f d t bf d t b i bl l b i t di bl l b i t d l b k il b k i ii
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