CHAPTER 4
MATERIEL USED IN CONJUNCTION WITH CRANE-SHOVEL
Section I. SHOVEL FRONT END ATTACHMENT
(1) Remove front end attachment currently
4-1. General
installed on crane-shovel unit (see applicable section of
this Chapter).
a. Description. The crane-shovel basic unit is
(2) Remove cables from boom hoist and
normally procured for crane operation, although front
digging drum (para 3-43).
end attachments for conversion to other type operation
(3) Present crane-shovel at organizational
are available, and will be described in subsequent
maintenance for removal of lagging (para 3-131);
sections of this chapter.
The shovel front end
installation of shovel sprocket on digging drum,
attachment (fig. 4-1) consists of shovel boom dipper
planetary pinion gear (para 3-132), and the repositioning
handle, dipper trip cable, briddle bar, saddle block,
of planetary clutch band (para 3-130).
shipper shaft, crowd chain, antisway spring, crowd and
(4) Proceed with installation of shovel front
retract mechanism on the boom foot, drum sprocket,
end attachment (para 4-2).
planetary pinion gear, and cables. Refer to figure 4-2
for relationship of revolving frame components.
4-2. Shovel Front End Attachment
Note. When crowd and retrack mechanism
a. General. The shovel front end attachment is
is not installed on boom foot, this must be
normally positioned on cribbing (fig. 4-1) for storage
accomplished at direct support maintenance before
between periods of use, but may be received
shovel front end attachment can be installed at
disassembled as shown on figures 2-2 and 2-3. In the
organization.
latter
case,
assembly
of
the
shovel
b. Preparation Prior to Installation of Shovel
Attachment.
Figure 4-1. Shovel front end attachment, cribbed for removal or installation.
4-1
