(5) Install in reverse order.
(3) Install tagline on winder, then attach line
to clamshell bucket.
b. Disassembly ad Reassembly.
(1) Remove four capscrews, lockwashers,
4-15. Boom Harness Spreader
and two keeper plates which secure two pins in
spreader.
a. Removal and Installation.
(2) Remove two pins and lift four sheaves
(1) Lower boom (para 2-12b) to rest on
from spreader.
cribbing (fig. 2-6), then slack off on boom hoist cable
(3) Reassemble
by
reversing
above
until spreader rests on boom.
procedure.
(2) Disconnect boom hoist cable from dead
end socket on gantry, then wind cable on boom hoist
c. Cleaning, Inspection and Repair.
drum slowly while guiding cable end through sheaves
(1) Clean all parts in an approved cleaning
(fig. 43).
solvent and dry thoroughly.
(3) Remove two cotterpins and pins, then
(2) Visually inspect mounting hardware for
remove two cable sockets from boom harness spreader.
stripped threads or burs; inspect sheaves for cracks or
excessive wear, then inspect spreader for bent, cracked,
or defective condition.
(3) Repair
by
replacing
defective
components, or mounting hardware.
4-16. Fairlead and Sheaves
a. Removal and Installation.
(1) Lower dragline bucket to ground and
remove all tension from cables.
Figure 4-12. Tagline under, removal and
installation.
(2) Disconnect drag cable at dead end socket
on bucket (fig. 2-12), then wind drag
(4) Lift the spreader off the boom.
Figure 4-1. Boom harness spreader, removal and installation.
4-13
