| Elongation |
 |
 |
 |
3% or more elongation should be replaced |
|
 |
Lengthening of chain could reduce strength by as much as 18% |
| Rust Corrosion |
|
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May cause sideplate cracking and reduced load carrying capacity |
|
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Chains must be completely protected by a film of lubricant |
| Cracked Plates |
|
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Repeated heavy loads over a period of time may crack plates |
|
 |
Chains must be replaced if a crack is discovered |
| Protruding and Turned Pins |
|
 |
Heavy loaded chains with little lubrication generater friction between the pin and plates. |
|
 |
Pins will turn and slowly work out of the chain causing failure. |
| Misalignment |
|
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Is determined by a wear pattern on pin heads and outside plates |
|
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Will damage the chain and sheaves and cause internal friction in the chain |
| Chain Anchors and Sheaves |
|
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Check chain anchors for wear, damage, and incorrect alignment |
|
 |
Anchors with worn or broken fingers must be replaced |
|
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The retention of chain anchor pins should be checked and pins replaced as necessary. |