CHAPTER 6
REPAIR INSTRUCTIONS FOR MATERIEL USED IN CONJUNCTION
]
WITH CRANE SHOVEL
Section I. SHOVEL BOOM
6-1. General
(3)
Remove two nuts (18), lockwashers (2),
bolts (20), and cable drum (19) from shaft (8).
The crowd and retract and chain tightener mechanism,
(4)
Drive shaft (8) through boom far enough
shipper shaft and saddle blocks bridle bar, and boom
to permit removal of left hand saddle block (8), then
point sheaves are mounted on boom of shovel front end
lower saddle block to the ground.
attachment. The paragraphs of this section will describe
(5)
Remove spur gear (12) from left end of
maintenance of the components named above.
shaft (8).
(6)
Drive shaft (8) farther through boom and
6-2. Shipper Shaft and Saddle Blocks
remove sprocket (11).
a. Removal and Disassembly
(1)
Remove dipper, and dipper handle (TM
5-3810-201-12).
(2)
Remove two cotterpins (28, fig. 6-1),
washers (24), bolts (6), and collar (7) from shaft (8).
Figure 6-1. Shipper shaft and saddle blocks, exploded view.
6-1
