TM 5-3810-289-12
C. SWINGING THE MACHINE
D. DUMPING THE DIPPER
STEP 6.
SWING
MACHINE
(FIGURE
2-42) TO
STEP 7.
DUMP BY RELEASING DRAG BRAKE,
DUMP
AREA.
PUSHING THE HOIST CLUTCH LEVER FORWARD,
AND RELEASING THE HOIST BRAKE.
ME 3810-289-12/2-47 (2)
Figure 2-47. Operating the backhoe (sheet 2 of 2).
adjusted to give dipper the most efficient digging angle.
2-21. Operation of Shovel
b. Operation.
a. General.
(1) Start the crane-shovel (para 2-15).
(1) Keep dipper teeth sharp.
(2) Refer to figure 2-48 to operate the
(2) Overcrowding slows down the hoist
shovel.
and does not increase speed of filling.
(3) Spot trucks so that they can be loaded
2-22. Operation of Piledriver
from the rear.
a. Start engine (para 2-15) and engage clutch.
Warning: Never swing over cab of truck.
b. Attach piledriver front-end equipment (para
(4) Keep the machine working with the full
c. Attach pile follower cable to hooks on
length of both tracks on a solid footing.
hammer, then lift hammer and pile follower by moving
(5) Be careful not to ride the crowd brake
hoist clutch lever toward operator (fig. 2-31). When
when crowd clutch is engaged. Stop movement of the
hammer reaches top of hammer guides, return hoist
dipper handle by engaging the opposing clutch and use
clutch lever to neutral, apply hoist brake pedal, and set
the crowd brake only when it is necessary to hold the
hoist brake lock to hold hammer in raised position.
handle in position with the crowd lever in neutral.
d. Run pile handling cable off drum by
(6) When lowering back into the pit, allow
moving crowd and retract clutch lever away from
the dipper handle to run in by gravity while the handle is
operator; at same time, apply pressure to digging brake
above the horizontal and run out when the handle is
pedal to prevent cable from overrunning. Attach pile
below horizontal.
handling cable to upper end of a pile and raise it into
(7
Avoid excessive crowding and
position within pile leads by moving crowd and retract
hoisting.
clutch lever toward operator;
(8) Do not pull the dipper through full depth
of the bank to fill. Take just enough out to fill your dipper
and pull out. For high banks, take top passes first.
(9) See that the dipper pitch braces are
2-55
