Crane Hook Block & Hook Inspection: Sheaves, Safety Latch and Load Path

Assess the hook, safety latch, sheaves, bearings, rope seating and block body as one load-path assembly.

Important hook observations

Changes in throat opening, deformation, twist, surface damage, suspected cracking and a safety latch that does not close should be recorded. Measurement and acceptance criteria follow the applicable equipment requirements.

• Throat opening
• Deformation
• Surface damage
• Safety latch

How to assess block sheaves

Sheave-groove condition, correct rope seating, side wear, bearing noise and free rotation can directly influence rope life.

• Sheave groove
• Rope seating
• Bearing
• Side wear

Block body and connections

Side plates, pins, nuts/locking elements, guards and swivelling connections are reviewed for looseness, impact and irregular wear.

• Side plates
• Pins
• Locking
• Swivel connection

Data for service assessment

Front and side hook photos, block capacity/nameplate, rope diameter and close views of the symptom speed up technical assessment.

• Hook photos
• Capacity
• Rope diameter
• Symptom close-up