MUELLER
®
B-101
TM
and B-100
TM
Drilling and Tapping Machines
Operating Instructions
5
5. Unscrew the feed sleeve and cap
containing the boring bar assembly
from the cylinder of the machine (2
1
/2
turns).
NOTE: This can be done more
conveniently if the boring bar is in
the retracted position.
6. Place the body and cylinder of the
machine on top of the small saddle
gasket. Position the machine so that
the bypass valve is on the upper
side, if the machine is to be operated
in any position other than vertical.
Flop valve lever handle will be on
the lower side of machine.
7. Unscrew nuts on chain hooks until
nuts are ush with the end of the
threaded stem.
8. Hang chain hook and washer in
chain yoke.
9. Attach chain to chain hooks. Hook
chain into one hook and bring under
the pipe and hook to nearest link
The top chain ring sitting on the hook
should be installed horizontally with
the lower chain ring vertical between
the two forks. (B.)
10. Hand tighten chain hook nuts.
11. Slide machine on pipe to desired
position or angle.
Select the Equipment Required
1. Select the proper combined drill
and tap according to:
a). Size and type of inlet thread on
stop or plug to be inserted.
b). Material from which the pipe to
be tapped is made.
c). Size and class of pipe to be
tapped.
2. Select the proper saddle according
to the size and type of pipe to be
tapped.
3. Select the proper screw plug.
a). For corporation stops according
to the size and type of outlet.
b). For plugs according to the size.
4. Select proper extracting tool.
a). For corporation stops according
to the size and type of outlet.
b). For plugs according to the size.
5. Select the items of special
equipment which may be required
because of special operating
conditions.
Attach Machine to Pipe
1. Thoroughly clean the pipe at the
location for the tap; include an area
greater than the large saddle gasket.
2. Place the large saddle gasket on
top of the pipe even with the location
for the tap, with the raised projection
up away from the pipe.
3. Place the saddle on the large
saddle gasket.
4. Place the small saddle gasket in the
recess in the top of the saddle. (A.)
12. Tighten the chain hook nuts
evenly, using wrench furnished with
machine. A “cheater’’ or extension
handle should not be used on this
wrench. Hammer the chain around
the pipe to remove any twist in the
chain and continue tightening both
chain hook nuts until the machine
is bearing solidly against the pipe.
New type chain hooks and washers
prevent rotation of chain hooks and
provide a better grip for round link
chain.
IMPORTANT: DO NOT tighten
chain hook nuts after starting to
drill as it will throw the machine
out of alignment.
NOTE: Use chain spreader (Part
No. 40321) when tapping pipe
3” in size and smaller to spread
the chain so that it will clear the
lower edge of the body of the
machine.
B-101 and B-100 Machine chain is
for use on pipe up to 12” in size.
Use the proper length and type of
extension chain when tapping pipe
in larger sizes.
A.
B.
Operating Instructions
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