Free crane hook block inspection checklist

What is a crane hook block inspection checklist?

A crane hook block inspection checklist is the component-level record used by a competent person to inspect the hook block assembly on a crane and decide whether it stays in service, goes on the watch list, or is retired and replaced. The hook block is the load-bearing assembly that sits between the wire rope reeving and the load, and the inspection covers the hook body, the safety latch, the swivel bearing, the sheave bearings, the sheave grooves, the hook nut and thread engagement, the side cheek plates, the equaliser sheave on multi-fall configurations and the capacity tag legibility. Unlike a full crane inspection that covers structure, hydraulics and controls, this checklist focuses on the hook block as a single load-path assembly. Key technical measurements include throat opening against the OEM nominal where typically a 10 percent increase against the original dimension is the discard threshold, hook twist measurement where more than 10 degrees deviation from the plane of the hook body is the discard threshold, swivel bearing freeplay, sheave bearing freeplay, sheave throat depth against the wire rope diameter and a magnetic particle or dye penetrant check on the hook body at the saddle and shank radius where fatigue cracks initiate.

AS 3777 (Lifting hooks - Safety latches and discard criteria) is the Australian standard that governs hook discard, AS 2550.1 (Cranes safe use - General requirements) carries the safe-use framework, and ASME B30.10 (Hooks) is the international reference most OEM manuals point to alongside the Australian standard. WHS Regulations 2011 Chapter 5 makes the hook block part of the PCBU plant inspection duty. Each crane in the AS 2550 series references AS 3777 for the hook on that crane type. The capacity tag must remain legible because a hook with an illegible capacity stamp is treated as non-compliant regardless of measurable condition. A printed checklist supports the inspector at the crane, and a digital record in MapTrack ties each inspection to the crane serial, the hook block serial, the install date and the running-hour count so the retirement decision is defensible later.

Learn more about compliance and inspections in MapTrack.

Benefits of digitising forms in MapTrack

When you digitise crane hook block inspection checklists in MapTrack, you get:

• Field users can easily scan a QR code to complete a form on mobile. Unlimited users.
• Automatically get alerts when faults are identified.
• Link every form digitally as a PDF to the relevant asset, location or person.
• Receive a digital PDF copy with every submission to your email.
• Ability to share forms digitally.
• Build conditional logic (show or hide questions based on answers).
• Take pictures or attach photos. Not possible with a paper-based form.
• Electronic signatures.
• Edit forms later without reprinting.
• Restrict permissions (who can view, complete or approve).
• Build forms with AI (describe what you need and MapTrack suggests the form).
• Escalate critical hazards instantly to safety managers via push notification.
• Maintain an auditable safety register that satisfies WHS regulator requests.
• Correlate incident trends across sites with built-in safety analytics.

Book a demo to see how MapTrack handles crane hook block inspection checklists.

What to include in a crane hook block inspection checklist

This crane hook block inspection checklist covers 14 key areas:

• Hook block identification: hook block ID, serial number, install date, hours since install, crane serial it is currently fitted to
• Capacity tag legibility: WLL stamp, manufacturer mark, certification standard and batch number all readable without doubt
• Throat opening measurement: vernier or template measurement at the throat compared against OEM nominal, with 10 percent opening as the typical discard threshold
• Hook twist measurement: twist gauged from the plane of the hook body, with 10 degrees as the typical discard threshold per AS 3777
• Hook body crack inspection: visual on the saddle and shank radius, with MPI or dye penetrant on any suspect zone, no surface weld repair attempted
• Hook nut and thread engagement: thread engagement check, locking device condition, retainer pin or split pin in place and not deformed
• Safety latch function: latch springs back fully into the throat, no sticking, no missing fasteners, latch not bent or distorted
• Swivel bearing: rotation under load is smooth, no excessive freeplay, grease nipple servicing current, seal condition acceptable
• Sheave bearings and grooves: each sheave freeplay measured, groove gauge check against the wire rope diameter, throat depth measured against discard criteria
• Equaliser sheave: on multi-fall blocks, equaliser sheave bearing and groove inspected and freeplay measured
• Side cheek plates and pins: side plate condition, retainer pin engagement, no bowing or cracking of the cheek plates
• Lubrication condition: grease nipple servicing current on swivel, sheaves and pins, with no dry zones evident
• Painted surfaces and corrosion: paint condition and corrosion under any chips, with surface rust acceptable but pitting on critical surfaces flagged
• End-of-life decision: keep in service, watch list with shorter interval, or retire and replace now

How often should you complete this inspection checklist?

AS 3777, AS 2550.1 and ASME B30.10 set the inspection cadence the hook block inspector should follow. The crane operator runs a visual pre-start hook check each shift, looking for obvious damage, missing or sticking latch and capacity tag legibility. A monthly visual inspection by a trained technician covers the assembly in place, including latch function, capacity tag legibility, swivel rotation and obvious deformation. A quarterly inspection by a competent person covers measured throat opening, hook twist, sheave bearing freeplay and a function test under light load. A 12 monthly major hook block inspection sits inside the annual crane major inspection and adds MPI or dye penetrant on the hook body saddle and shank radius. Any shock load, dropped object, impact, chemical exposure or near-miss triggers an out-of-cycle inspection of the hook block before the crane returns to service. In MapTrack the hook block inspection schedule sits against the hook block ID rather than the crane, so a hook block swap between cranes resets the clock automatically.

Applicable regulatory standards

This template aligns with the following regulations and standards:

• AS 3777 (Lifting hooks - Safety latches and discard criteria)
• AS 2550.1 (Cranes safe use - General requirements)
• ASME B30.10 (Hooks)
• WHS Regulations 2011 Chapter 5
• Safe Work Australia Code of Practice 2018: Managing Risks of Plant in the Workplace

Related resources

More safety templates and guides:

• crane wire rope inspection checklist
• crane inspection checklist
• overhead crane monthly inspection
• overhead crane annual service
• lifting equipment inspection checklist
• hoist inspection checklist
• crane 1000 hour service
• crane 500 hour service
• pre start inspections
• preventive maintenance scheduling
• plant compliance
• construction