R&M Materials Handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist LM 16-20-25 - Manual (Page 37)

LM16-20-25 I&M MANUAL/EN/11.30.2010
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may not be reproduced, disclosed to third parties, altered or otherwise employed in any manner whatsoever without the express written consent of R&M Materials Handling, Inc.
Copyright © (2010) R&M Materials Handling, Inc. All rights reserved.
6.13 Hooks
Check hooks for deformation or cracks. Hooks must be replaced if throat opening has increased by more
than 15%, or if throat opening has more than 10-degree twist from plane of straight hook.
Figure 16. Measuring Hook Deformation
Due to many types and sizes of hooks that can be furnished and/or specified by the user / owner, it is
recommended that user / owner measure the actual throat opening of hook as originally furnished. See
Figure 16. Record the throat dimension on above sketch. Retain as a permanent record. This record can
then be used for determining when hook must be replaced due to deformation or excessive throat opening.
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CAUTION: Abuse or overloading of hoist is indicated when any hook is twisted or has a
throat opening in excess of normal. Other load bearing components SHALL be checked for
damage.
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CAUTION: Safety latches SHALL be replaced if missing, bent, or broken.
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CAUTION: A safety latch SHALL function properly at all times.
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CAUTION: Repairing hooks by welding or reshaping is strictly forbidden.