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MAINTENANCE 800D

3-6 Published 5-27-2018 Control # 039-06

Method 2

Wind a length of soft annealed wire Figure 3-3 around the

wire rope at least seven times. The two ends should be

twisted together in the center of the seizing. Tighten the

seizing by alternately prying and twisting. Cut off both ends

of the wire and pound the twist flat against the rope.

NOTE: Non-preformed wire rope (1) Figure 3-4 should

have three seizings (3) located on each side of the

cut (4) as compared to preformed wire rope (2).

Care of Wire Rope

Handle wire rope with care to prevent damage to the

individual wires which affect the overall strength and

performance of the rope. Do not allow the formation of kinks,

because this displaces the strands of wire from their original

position and relation to each other causing severe bending

and unequal tensions in the strands. This distortion and wire

displacement cannot be corrected even under high tension

and a permanent weak point remains in the rope. Displaced

or raised wires indicate a previous kink, but does not show

the damaged condition of the inner rope wires.

Never pull wire rope over a non-rotating support such as a

spindle bar, a pin, or an inoperative sheave. This practice

causes severe abrasion to the outer strand wires. A properly

operating sheave or snatch block is essential to safety and

long service life of the rope.

Do not use worn sheaves or sheaves with flat grooves

because they do not provide sufficient support to prevent the

distortion and flattening of the rope. Sheaves with nicked or

broken flanges can cut or otherwise damage the rope.

An even distribution of rope coils over the hoist drum is

essential to smooth operation. This prevents the rope from

cutting down through or crushing other coils on the drum

resulting in damage to and difficulty in unwinding the rope.

FIGURE 3-3

FIGURE 3-4

7204

Reference

Only

Manitowoc National Crane 800D User Manual

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