FAIRLEAD AND LAGGINGS
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
information concerning operation and maintenance of the
fairlead and laggings. It also contains repair parts
INSTALLATION PROCEDURE. To install the fairlead,
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
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.
Lower the boom slowly when the fairlead
assembly in position. The limit switch
5, 6, 23, 25
will stop boom lowering if the boom
4, 8, 24, 26
contacts the fairlead head limit switch.
Boom Hoist Line
Figure 1. Fairlead and Laggings