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Check hooks for deformation or cracks. Hooks must be replaced if throat opening has increased by more
than 5%, or throat opening has any twist from plane of straight hook, or if depth at load bearing point has
worn more than 10% of original section dimension(E).
For the wear on the top hook and the load bottom hook, it shall be checked regularly. Measure the throat
opening. if the throat opening exceeds the maximum opening allowed, replace the hook. Damaged safety
latches shall be replaced immediately. Measure the section dimension E. If this measurement is less than
the minimum allowed, replace the hook.
Minimum
Depth
= E x 90%
1.116
1.524
0.972
1.612
= Nx105%
For more information contact: Sievert Crane and Hoist, (708) 771-1600, [email protected], www.sievertcrane.com
