Figure 12-37.—Measuring wire rope.connections when there are any broken wires adjacentto the end connection.2. Boom pendant wire ropes. More than twobroken wires in one lay in sections beyond the endconnection or one or more broken wires at an endconnection.3. Kinks or crushed sections. Severe kinks orcrushed rope in straight runs where the wire rope coreis forced through the outer strands.4. Flattened section.Flat sections where thediameter across the flat section is less than five sixths ofthe original diameter.5. Wire rope wear. Measure wire rope with wire ropecalipers (fig. 12-37) to check for wear accurately. Replacewhy rope that has wear of one third of the original diameterof outside individual wires. A crescent wrench can be usedas an expedient means to measure wire rope.Hook Block InspectionThe hook block and the hook are part of the ODCLinspection. The operator must inspect the hook blockfor cleanliness, binding sheaves, damaged or wornsheaves, worn or distorted sheave pins, broken bolts,and worn cheek weights (fig. 12-38).The hook is inspected for damage, excessive wearto the hook safety latch, hook swivel trunnions, thrustcollar, and securing nut. Also, the hook is inspected fordamage or missing lubrication fittings, properlubrication, cracks and gouges, and if visibly bent ortwisted.Sheave InspectionThe sheaves inspection (fig. 12-39) is the inspectionfor wear and damage, wear in the wire rope sheavegroove, loose or damage sheave guards, and wornbearings and pins. Sheaves rotate on either bearings orbushings that are inspected for discoloration (due toFigure 12-38.-Hook and block inspection points.12-24
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