MUELLER®D-5TM and E-5TM Drilling Machines
Operating Instructions
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4. Coat drill, or shell cutter, and pilot
drill thoroughly with Mueller cutting
grease. (DO NOT us cutting grease
when drilling A-C or concrete pipe.)
5. Attach proper size machine
adapter nipple to the body of the
machine making sure that the body
gasket or washer is in place and in
good condition.
6. Retract boring bar to its rearmost
position.
7. Attach drilling machine and
machine adapter nipple to the valve,
stop or tting that is to be drilled
through.
8. Open valve, stop or tting being
used.
9. Advance boring bar until drill or
pilot drill contacts the pipe to be
drilled.
10. Adjust feed tube and yoke (or
feed nut and yoke) so that the yoke
is engaged with the top of the friction
collar on boring bar. Raise pivot arm
of locking mechanism on side of
yoke so that it is positioned under
friction collar and lock in place with
operating screw.
11. Retract boring bar a slight
amount.
12. Measure and mark the travel
required to complete the drilling
operation. (Mark the point on the
body that the feed tube will reach
when drilling is completed.)
13. DRILL THE MAIN
Power Operated Method Using
Mueller H-603 Electric Power
Operator, H-604 Air Power
Operator, or H-705 Hydraulic
Power Operator
The E-5 and D-5 Drilling Machines
have been designed to permit the
addition of a power operator. The
power operator will drive the tools
and provide automatic feed during
the drilling operation. The power
operator consists of a gear case
and motor using an electric, air, or
hydraulic motor for the power source.
1. Oil all working parts. Keep all
threaded surfaces and boring bar
well lubricated and free from dirt
and foreign material. The feed tube
on the E-5 and D-5 is designed to
aid in cleaning the threads when
advancing or retracting the feed
tube and yoke. If equipped, keep
the clean-out notch and oil holes
of these machines clean at all
times. E-5 and D-5 Machines are
equipped with O-ring packing.
Under normal conditions the only
maintenance required for the O-rings
is lubrication. If the O-rings should
become excessively worn they
should be replaced.
2. Advance boring bar until drilling
tools may be attached.
3. Attach drilling tools to boring
bar. If drilling tools to be used will
not pass completely through the
machine adapter nipple to be used,
attach the machine adapter nipple
before attaching the drilling tools
(see instruction 5).
Flat drills are used for drilling
through straightway or atway stops.
Measure dimensions “A” and “C” on
the at drill to be sure that they are
less than minimum dimensions “a”
and “c” through the body and key of
the stop to be used.
When advancing or retracting the
boring bar equipped with a at drill,
make sure that the drill is in the
proper position to pass through the
port opening in the key and body
of the stop being used. (Before
advancing the boring bar the correct
position can be marked on collar of
boring bar.)
IMPORTANT: When using H-604
Air Motor Power Operator. Install
an in-line lubricator as close to
the unit as practical and adjust
for slight oil mist from exhaust –
maintain pressure of 90psig. We
recommend the use of a gauge at
the throttle to determine the actual
pressure of air at the air motor.
The gear case attaches to the
machine by the means of two
sockets. The inner or small socket
drives the boring bar. The outer
or large socket drives the feed
yoke through a gear reduction
as the boring bar is rotated. The
resulting feed on the drill is 0.10” per
revolution of the boring bar.
The operator takes the torque of
the motor resulting from the drilling
operation, so the motors are equipped
with a squeeze type trigger throttle. If
for some reason a drill should stick,
the motor can be shut off quickly.
a) Place the gear case and motor on
the drilling machine aligning the
sockets with the square shanks
on the boring bar and feed yoke.
Socket which contacts feed yoke
should be closed and wing nut
securely.
b) Set position of air or electric motor
switch to give clockwise rotation
of boring bar.
NOTE: Feed the yoke by hand
when using 11/2” and 2” drill bits.
Hand Operation
Drill the hole by operating the ratchet
handle clockwise and turning the
feed tube and yoke (or feed nut and
yoke) clockwise a little at a time.
Use a light, even feed and nish
with a light, even feed. The special
locking mechanism that locks the
boring bar to the feed yoke prevents
the drill from spiraling into the hole
before the hole is completely drilled.
To prevent over-feeding when drilling
small holes and also when starting
to drill larger holes, apply the feed by
gripping the knurled section of the
feed tube instead of feed handles.
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