Hook Block Inspection

The hook block and the hook are part of the ODCL inspection. The operator must inspect the hook block for cleanliness, binding sheaves, damaged or worn sheaves, worn or distorted sheave pins, broken bolts, and worn cheek weights (fig. 12-38).

The hook is inspected for damage, excessive wear to the hook safety latch, hook swivel trunnions, thrust collar, and securing nut. Also, the hook is inspected for damage or missing lubrication fittings, proper

^{Figure 12-37.-Measuring wire rope.}

lubrication, cracks and gouges, and if visibly bent or twisted.

_{Sheave Inspection} 

^{2. Boom pendant wire ropes. More than two} connections when there are any broken wires adjacent to the end connection. The sheaves inspection (fig. 12-39) is the inspection for wear and damage, wear in the wire rope _{connection or one or more broken wires at an end connection.} sheave broken wires in one lay in sections beyond the end groove, loose or damage sheave guards, and worn bearings and pins. Sheaves rotate on either bearings or bushings that are inspected for discoloration (due to

Figure 12-38.-Hook and block inspection points.

Figure 12-39.-Sheave (pulley) inspection.

Figure 12-40.-Wedge socket.

excessive heat), metallic particles, chips or displaced metal, broken or distorted bearing retainer or seals, adequate lubrication, and tight bearing caps.