FAIRLEAD AND LAGGINGS

TM 5-3815-223-14&P

FAIRLEAD AND LAGGINGS

GENERAL INFORMATION

INSTALLING FAIRLEAD

Figure 1 illustrates the fairlead and laggings for the

GENERAL. The fairlead installation includes installing

Model 5060 crane.

This manual is confined to

the fairlead bracket, sheave assembly and limit switch

lubrication, installation, removal, adjustment and general

assembly.

information concerning operation and maintenance of the

fairlead and laggings. It also contains repair parts

INSTALLATION PROCEDURE. To install the fairlead,

information.

proceed as follows (see Figure 2):

DRAGLINE OPERATING CYCLE

1. Set fairlead bracket (01) up to revolving frame bracket

(02). Secure with pins (03) and hair pins (04).

The dragline operating cycle consists of five steps;

casting the bucket, dragging (filling) the bucket, raising

2. Set sheave assembly (05) into fairlead bracket head.

the loaded bucket, swinging, and dumping (see FO-1 ).

Secure with bearing retainer (06), lockwasher (07) and

The boom angle position is set before beginning

locknut (08).

operations.

The functions of the drums during dragline operation are

3. Install limit switch as shown in Figure 3.

tabulated below. The numers in the column "controls"

correspond to the items in Figure 2-1 of TM 5-3810-303-

14, Page 2-3.

Use care when lowering the boom.

Drum

Function

Controls

Lower the boom slowly when the fairlead

assembly in position. The limit switch

Left

Dragline

5, 6, 23, 25

will stop boom lowering if the boom

Right

Hoist Line

4, 8, 24, 26

contacts the fairlead head limit switch.

Boom Hoist

Boom Hoist Line

Figure 1. Fairlead and Laggings