(6) Remove the bleed plug located on top of
the receiver cylinder.
(7) Move lever back and forth from SYN-
CHRONOUS to full ON position until all air has
been expelled from receiver through bleed plug
opening. Each time prior to moving lever to
SYNCHRONOUS position, replace and tighten
receiver bleed plug. If plug is not replaced each
time, air will be sucked into the system.
(8) With bleed plug tightened, move lever to
SYNCHRONOUS position and then push forward.
If full fuel rack opening is not obtained, air is
still trapped in system, and it will be necessary
to repeat steps (4) through (`7).
(9) Fill transmitter reservoir through elbow
fitting until oil is visible at the top of the elbow.
d. Place hammer on cribbing or on a short
section of pile making sure the anvil is in the
UP position.
e. Engage the starting device (fig. 2-8).
(1) Have ground crew pull down on latch
rope and hold.
(2) Crane operator can now lower starting
device which causes the lifting lever to latch with
the ram.
(3) Ground crew should release latch rope.
(4) Crane operator can now engage the hoist
clutch and lift the ram to the top of the stroke.
(5) Move the transmitter lever to provide
to movement of the transmitter fuel pump
rack opening.
(6) To release ram for free fall, stop upward
movement and release hoist clutch. A slight down-
ward movement of the starting device will release
the ram.
(7) After the release of the ram, position the
starting device with the hoist line in the approxi-
mate center position of the starting device cover.
This eliminates shock loadings which will cause
undue wear and damage.
Caution : Do not pull latch rope at any
time while hammer is in operation.
(8) Select transmitter rack setting that will
allow hammer to operate satisfactorily without
jumping.
Figure 2-6. Exhaust intake, and vent covers,
2-10. Stopping
removal and installation.
SYNCHRONOUS position, which permits oil to
tion to stop the hammer.
flow from the transmitter reservoir into the sys-
b. Perform the after-operation checks and serv-
tem, and also allows trapped air to work out into
ices (table 3-l).
reservoir. Alternately work lever from full-ON
c. If hammer is to be shut down for an extended
to SYNCHRONOUS position, hesitating a few
period of time or overnight, or moved, the trans-
seconds in each position to allow any entrapped
mitter breather cap must he closed.
air in the double relief valve and lower transmit-
2-11. Operation of Equipment
ter to work out into the reservoir.
Start the diesel pile hammer as instructed in para-
(5) Release the transmitter lever, which will
return to the off position.
2-6
