Figure 4-25. Auxiliary gantry and boom foot adapters.
(2) Visually inspect all parts for cracks,
4-27. Backhoe Auxiliary Gantry
breaks, bends or other defect.
a Removal.
(3) Repair by welding cracks or breaks,
(1) Lower boom (para 2-12b) to rest on
straightening bends, or replacing defective mounting
cribbing (fig. 2-15).
hardware.
(2) Disconnect boom hoist, hoist, and digging
cables at dead end sockets (fig. 2-16) then wind on
4-28. Backhoe Bucket, Bail, and Teeth
drums (unreeve).
a Removal.
(3) Remove backstop (para 4-30).
(1) Raise boom (para 2-12b), build cribbing
(4) Remove four cotterpins (fig. 4-25) from
under boom near foot, lower boom to rest, then
two pins securing gantry to left and right hand boom foot
disconnect and unreeve the digging cable (fig. 2-16).
adapters, remove pins, then remove auxiliary gantry.
(2) Remove bail and link by removing
b Disassembly and Reassembly.
cotterpins, nuts, washers, and bolts (fig. 4-27).
(1) Refer to figure 4-26, remove items 1
(3) Remove cotterpin, nut, washers, and bolt
through 9 in numerical sequence, then remove sheave
securing brace to bucket. Remove cotterpins and pin
frames from gantry.
(2) Refer to figure 4-25 to remove adapters
bucket.
and wire rope socket from gantry frame.
b Disassembly and Reassembly.
(3) Complete disassembly, numerically, as
(1) Disassemble bail by removing two bolts,
shown on figure 4-26.
lockwashers, and keeper plate (fig. 4-27), remove pin,
(4) Reassemble in reverse order.
then remove sheave from bail.
c Installation.
Install the auxiliary gantry by
(2) Remove 12 nuts and bolts, and remove
reversing procedure in steps (1) through (4) in a above.
left and right hand cutting edges.
d Cleaning, Inspection, and Repair.
(1) Clean all parts in an approved cleaning
solvent and dry thoroughly.
4-24
