(2) Remove cotterpin, nut, washers, and bolt
from pitch brace (fig. 4-28) then remove brace from
stock.
Note. At reassembly, depth of bucket slice
is adjusted by position of bolt in brace. For deep
excavation put bolt through lower hole. Where
maximum dumping height is required put bolt in
upper hole. For normal operation the bolt should
be in center hole.
(3)Remove nut, lockwasher and bolt then
remove sheave frame from bucket stick.
(4) Remove cotter pin, nut, lockwasher, spacer,
sheave, and bolt from frame.
(5) Remove cotter pin, nut, wedge, socket, and
pin from frame.
(6) Reassemble by reversing procedures in
steps (1) through (5) above.
c. Cleaning, Inspection and Repair.
(1) Clean all parts in an approved cleaning
solvent and dry thoroughly.
(2) Visually inspect parts for cracks, breaks,
bends, or excessive wear.
(3)Repair by welding cracks or breaks,
straightening bends, or replacing worn or defective
parts.
d. Installation. Install bucket stick by reversing
procedure used in removal (a above)
4-30. Backhoe Safety Backstop
a. Removal.
Figure 4-29. Backhoe safety backstop, removal,
(1) Remove four locknuts, nuts, and two U bolts
disassembly, reassembly, and installation.
frame gantry pin.
reeve all cables (fig. 2-16), winding them carefully on
(2) Remove two cotterpins from pin, remove
drums.
pin, then remove backstop from auxiliary gantry.
(2) Remove boom safety backstop (para
b. Disassembly and Reassembly.
(1) Separate the two pipes by pulling smaller
(3) Remove auxiliary gantry (para 4-27).
out of the larger (fig. 4-29).
(4) Remove bucket stick (para 4-29).
(2) Remove washer and spring from the larger
(5) Build cribbing under boom point, use
pipe.
wedges or jacks to take weight off boom foot pins (fig.
(3) Reassemble by reversing procedure in
steps (1) and (2) above.
from boom.
c. Cleaning, Inspection and Repair.
b. Disassembly and Reassembly.
(1) Clean all parts with an approved cleaning
(1) Remove two cotterpins, pins, and guide
solvent and dry thoroughly.
sheaves from boom foot.
(2) Visually inspect pipes for bend or other
(2) Remove cotterpin, pin, and guide sheave
defect, and spring for compression strength.
from under sheave guard.
(3) Repair by straightening bends, or replacing
(3) Remove two cotterpins, pin, wedge, then
defective parts.
remove cotterpin, nut, socket, lockwasher and bolt from
d. Installation.
Install backstop by reversing
boom.
procedure in a above.
(4) Remove two nuts, lockwashers, and bolts
from bumper blocks, then remove bumper blocks from
4-31. Backhoe Boom
boom.
a. Removal. When boom must be repaired, or
replaced, proceed as follows:
unless replacement is required.
(1) Pull bucket under boom and lower boom to
rest on cribbing at boom foot only, then unreeve all
4-28
