Overhead crane and hoist quarterly maintenance checklist

Floor below the crane barricaded for the round

Area under the hook path and bridge travel barricaded or cordoned, people cleared, and the operator and area supervisor told the crane is out of production use.

Rated capacity markings legible from the floor

Rated capacity marked on the crane and on each hoist or load block, readable from the floor where it is operated, and matching the inspector's report.

Operators' pre-use check records reviewed

Operator pre-shift or daily check records since the last round reviewed, open defects noted and carried onto this walk for a closer look.

Hook, throat and latch observed

Hook lowered to eye level, checked for visible deformation, wear or cracks; safety latch present and springing closed; anything questionable referred to the qualified inspector.

Chain or wire rope condition observed

Load chain or wire rope run out and looked over for kinks, broken wires, stretch, corrosion or gouges; reeving seated in the sheaves; findings noted, not graded.

Load block and hook swivel observed

With the pendant e-stop pressed or the crane disconnect open, and nobody at the controls, hook turned by hand on its swivel; block, sheave guard and nut retainer checked, roughness referred.

Hoist brake holding observed

With a light test load, hoist stops and holds without drift when the control is released (observed behavior only, not a rated-load brake test).

Upper limit switch response observed

Hoist run up carefully to confirm the upper limit stops travel before two-blocking; not forced, and any failure to stop reported at once.

Lower limit or drum wraps observed with the hook unloaded

Where a lower limit is fitted, it stops the empty hook; otherwise rope wraps are confirmed left on the drum at the lowest working hook height, never run into a chain slack-end stop.

Pendant, controls and e-stop observed

Pendant or radio buttons matching their labeled motions, no sticking, e-stop dropping power when pressed, warning device sounding.

Trolley and bridge travel observed

Trolley and bridge tracking smoothly the length of the runway, no lurching or slipping, end bumpers and stops in place.

Pendant cord, strain relief or radio case observed

Pendant enclosure uncracked, cord jacket intact and the strain relief carrying the weight, or the radio transmitter case, belt and stop button undamaged.

Festoon or conductor bar tracking observed from the floor

Festoon cables or conductor bar and collectors watched through full travel from the floor: cables hanging free, no snagging, no arc marks or sparking visible.

Findings referred and defective crane tagged out

Each questionable observation sent to the qualified crane inspector and owner; a finding on hook, rope, brake, limit or stop tags the crane out of service under the site's procedure.

Crane parked and returned to the operator

Hook raised to its parked height, pendant hung or radio stored, barricades taken down, and the operator told the crane is available or tagged out.