MIL-HDBK-1164
Table 48
Troubleshooting Checklist for Chain Drives
Symptom
Cause of Trouble
Remedy
Broken pins or rollers.
Shock leads or chain
If speed-pitch relation is
speed too high for pitch.
cause, use chain of
shorter pitch.
Chain climbs sprockets.
Poor fit or severe
If sprockets fit poorly,
overload.
renew; make sure
tightener is installed in
drive chain.
Chain clings to sprockets.
Possibly incorrect or worn
Renew or reverse
sprockets or heavy tacky
sprockets, or change to
proper lubricant.
Chain gets stiff.
Poor alignment or
Correct alignment and
excessive overload.
eliminate overload.
Chain whips.
Too long centers; or high
Correct either condition.
pulsating loads.
Noise.
Misalignment; improper
Correct alignment; adjust
slack, loose bolts.
slack; tighten bolts;
reverse or renew worn
chain.
Wear on chain side walls
Misalignment.
Remove chain and correct
or sides of teeth.
alignment.
11.12
Tools and Equipment
11.12.1
Tool Inventory. Effective maintenance requires that the tools needed to
service the facility properly be readily available. Table 49 provides a list of suggested
tools to keep at the facility for general maintenance use. Specific tools may be
required for specialized equipment. Special test equipment may also be needed.
Consult the manufacturer's instructions for such equipment needs.
11.12.1.1
Tool Care and Usage. Tools have specific uses and in general should
not be used for other purposes. When the proper tool is not available, try to obtain it.
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