faces by pouring one pint of the pre-
drill until oil vapor is visible at the
hose outlet. It will require approxi-
scribed oil directly into the hose.
mately 12 to 15 minutes for the 1 1/2
Note. Use as short a length of hose as
inch diameter hose to become com-
possible, in order to minimize excessive
pletely coated with oil (lubricator
air pressure loss.
must be open).
(2) Disconnect the 1 1/2 inch main hose
(3) Connect the hoses and check all fit-
at the drifter drill and blow out the
tings for tightness.
line for several minutes to remove
trapped moisture and dirt.
c. Lubrication. Before attempting operation,
make sure that the pneumatic drill is properly
Caution: If the air hose is new,
preventive maintenance services.
hose disconnected from the drifter
Section II. MOVEMENT TO NEW WORKSITE
Dismantling for Movement
a. If the pneumatic drill is to be moved a
essary to transport by rail or trailer, make sure
short distance by tramming, no dismantling is
to position the drill guide as shown in fig. 2-1
required. Follow the procedures of paragraph
Reinstallation After Movement
b. If the pneumatic drill is to be moved by
use the tow hitch located at the rear of the
Section III. CONTROLS AND INSTRUMENTS
proper operation of the pneumatic drill.
2-9. Controls and
This section describes, locates, illustrates and
furnishes operator, crew, or organizational
The purpose of controls and instruments and
their normal settings are illustrated in figure
maintenance personnel sufficient information
about various controls and instruments for
Section IV. OPERATION OF EQUIPMENT
the operator may have to vary given procedure
to fit the individual job.
a. Instructions in this section are published
for information and guidance of personnel re-
sponsible for operation of the pneumatic drill.
b. The operator must know how to perform
(1) Perform necessary daily preventive
every operation of which the pneumatic drill
is capable. This section gives instructions on
starting and stopping the pneumatic drill, basic
motions of the pneumatic drill, and on coordi-
nating basic motions to perform specific tasks
(1) Mount propelling controls in the de-
for which the equipment is designed. Since
nearly every job presents a different problem,