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hole. If the bit should bind, a built-in, nonadjustable slip
clutch prevents the bit from turning (a ratcheting sound will
be audible). If this occurs, stop the tool, free the bit by
switching the motor to reverse, and begin again.
Using Rotary Percussion Core Bits (Fig 7.)
Core bits are useful for drilling large holes for conduit and
pipe. MILWAUKEE Heavy-Duty Thin Wall Core Bits have
heat treated steel bodies with durable carbide tips. They are
specially designed for fast, accurate drilling with combined
hammering and rotary action.
1. Clean and lubricate the threads on the adapter and core bit
as shown to make later removal easier. Screw the threaded
end of the adapter into the rear of the core bit.
2. Push the guide plate onto the pointed end of the center pin.
Insert the center pin and guide plate assembly into the core
bit. Be sure the small end of the center pin is securely placed
into the hole in the center of the core bit.
3. Insert the adapter into the nose of the tool as described on
page 1.
Set the rotary hammer/drill lever to rotary hammer.
4. Press the center pin firmly against your center mark, hold
the tool firmly and pull the trigger.
NOTE: Center pins and guide pins are not required for 1"
and 1-1/8" core bits. To make starting these bits easier, use a
template or notched board as shown.
5. After drilling to about the depth of the core bit teeth,
remove the center pin and guide plate from the core bit. Then
resume drilling.
6. After you have finished drilling the hole, hold the tool
upwards, pointing it away from your body as shown, and run
it briefly in forward to loosen the core bit from the adapter.
MILWAUKEE Heavy-Duty Thin Wall Core Bits drill holes up
to 3" deep. To make deeper holes, remove the bit, break and
remove the core. Then resume drilling.
Chuck Adapter Kit
INCLUDES:
Chuck Adapter
1/2" Chuck
Set Screw
RenTrain INC
Operating Instructions (continued)
Page 3
Fig. 7
RenTrain INC
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