Milwaukee 4004-20 Manuel De L'utilisateur page 7

Adjusting the Gib Screws
After the motor is mounted, make sure the cradle
and motor are rigid against the column to prevent
the motor or bit from wobbling during coring. Before
coring, try to wiggle the cradle with your hands. If the
cradle is secure, it should not move. If it does move,
tighten the six (6) gib screws that secure the cradle
to the column as follows.
For Cat. No. 4125 & 4130 only.
Tighten the twelve (12) gib screws with the hex
wrench (supplied in a separate accessory bag).
For Cat. No. 4115 & 4120 only.
To tighten the six (6) gib screws: loosen the hex nuts,
tighten the screws and then tighten the hex nuts.
Selecting and Installing a Core Bit
MILWAUKEE offers both standard and premium
Dymobits designed to cut through a variety of ma-
terials including poured concrete, steel-reinforced
concrete, and prestressed concrete. Always use
clean, sharp bits.
1. To install a bit,
grease the
spindle and
bit threads to
prevent cor-
rosion and to
help prevent Copper
the bit from Washer
s e i z i n g o n
the threaded
spindle.
2. Slip one copper washer (provided in separate
accessory bag with the water shut-off valve com-
ponents) onto the threaded spindle against the
spindle shoulder. The bag should contain an extra
copper washer; save it for future use.
3. Thread the bit securely onto the threaded spindle.
Selecting Speeds
To switch speeds, turn off the motor and switch the
speed while the tool is coasting to a stop. Never shift
at full speed or when tool is underload or stopped.
Use low speed for large diameter bits and going
through rods, deep holes, and hard aggregate.
Use high speed for smaller holes and softer materials.
See "Specifications" for suggested hole size and
aggregate guidelines.
Gib
Screws
Assembling the Water Shut-Off Valve to
Attach to
Dymodrill
1. Remove the water shut-off valve components from
the accessory bag. (The copper washers inside
the bag are for bit installation.)
2. Insert the hose adapter into the hose nut. Then
insert the rubber washer into the hose nut.
3. Insert the hose nut assembly into the shut-off valve
and securely tighten the assembly with the sup-
plied socket wrench; some threads on the hose
adapter will still be exposed.
4. Screw the shut-off valve assembly into the
water swivel housing on the Dymodrill motor).
Hand-tighten the assembly and then tighten it
approximately 1/4 turn with an adjustable wrench
(not provided).
Methods for Securing Equipment to
WARNING
to help prevent personal injury and to protect the
rig. An unsecured rig could rotate during coring
and possibly cause injury.
NOTE: Some building materials contain steel rein-
forcements. MILWAUKEE Dymobits can cut through
embedded steel, but are not recommended for coring
solid steel plates.
Water
Control
Valve
For specific instructions on using anchors, see "Using
an Expansion-Type Anchor".
WARNING
ing horizontal coring. Vacuum systems can slip
when used on a vertical surface.
Two methods will work to secure the rig for verti-
cal coring: either an expansion-type anchor OR a
vacuum pump and vacuum pad system. Securing
the rig with an anchor gives better bit performance
because the attachment is more rigid. For specific
instructions on assembling the vacuum system, see
"Assembling and Using a Vacuum System".
Optional Telescoping Assembly
The telescoping assembly can be used to supple-
ment either securing method.
NOTE: Vac-U-Rig
pump and vacuum pad. However, for some applica-
tions, you may choose to use an expansion-type
anchor to secure the tool.
Anchors and Telescoping Assembly are not supplied
with any of the above rigs. Telescoping Assembly
can be purchased separately (see "Accessories").
Anchors unavailable through MILWAUKEE.
7
the Dymodrill
Hose nut
Shut-off valve
Work Surface
To reduce the risk of injury always
secure the rig to the work surface
Horizontal Coring (walls)
To reduce the risk of injury always
use an expansion-type anchor dur-
Vertical Coring (floors)
Cat. No. 4136 includes a vacuum
®
Rubber
washer
Hose adapter