OZ Lifting Products Premium Chain Hoist OM - Manual (Page 13)

Hook Inspection
Warnings:
The OZ hoist with overload protection when used in accordance with safe operating procedures should
greatly reduce the chance of a hook opening up.
1. Any OZ hook that requires replacement because of excessive bends, twists, or throat opening
indicates abuse or overloading of the product. Therefore, other load-supporting components of the
product should be inspected for possible damage when such conditions are found.
2. Never repair hooks by welding or reshaping. Heat applied to the hook will alter the original heat
treatment of the hook material and reduce the strength of the hook.
3. Never weld handles or other attachments to the hook.
Hook Inspection Procedure
Where applicable, inspect hooks and measure throat opening at least once a month. Between regular
inspections daily inspections of the hooks should be done. Check for the following:
• Deformation, distortion, twisting, damage
• Missing, bent, or damaged hook latches
• Chemical damage, deformation, or cracks
• Greater than a 10-degree twist from the plane of unbent hook
• Excessive opening or seat wear
Hook Latch
Hook latch inspection should include the following:
Replace hooks that are opened to an extent that the latch does not engage the tip.
Latch should have enough spring pressure to keep it tight against the tip of the hook and allow it to
spring back to the tip when released
pg.13
Hook throat opening
Hook Latch