Applications, Maintenance | Milwaukee 0756-20 manual

Using Core Bits

Core bits are useful for drilling large holes for

1. Clean and lubricate the threads on the

adapter and core bit as indicated (Fig. 5)

to make later removal easier. Screw the

APPLICATIONS

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 drill- ing with combined hammering and rotary action.

Fig. 5

Adapter

Clean and lubricate threads

	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 with guide plate assembly into to the
	core bit. Be sure the small end of the
	center pin is securely placed into the
	hole in the center of the adapter.
3.	Insert the adapter into the bit holder of
	the tool as described in “Inserting Drill
	Bit or Chisel”. 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.
5.	After drilling to about the depth of the
	core bit teeth, remove the center pin and
	guide plate from the core bit. Resume

Selecting Bits

When selecting a bit, use the right type for your job. For best performance, always use sharp bits.

Drilling

1.Before drilling, be sure the workpiece is clamped securely. Use backing material to prevent damage to the workpiece during breakthrough.

2.When starting a hole, place the drill bit on the work surface and apply ﬁrm pressure. Begin drilling at a slow speed, gradually increasing the speed as you drill.

3.Always apply pressure in line with the bit. Use enough pressure to keep the drill biting, but do not push hard enough to stall the motor.

4.Reduce pressure and ease the bit through the last part of the hole. While the tool is still running, pull the bit out of the hole to prevent jamming.

Drilling in Wood, Composition Materials and Plastic

When drilling in wood, composition materials and plastic, start the drill slowly, gradually increasing speed as you drill. When drilling into wood, use wood augers or twist drill bits. Always use sharp bits. When using twist drill bits, pull the bit out of the hole frequently to clear chips from the bit ﬂutes. To reduce the chance of splintering, back work with a piece of scrap wood. Select low speeds for plastics with a low melting point.

drilling.

6. After you have ﬁnished drilling the hole,

MAINTENANCE

Core Bit

Center Pin

Guide Plate

hold the tool upwards, pointing it away

from your body, 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. Resume drilling.

WARNING

To reduce the risk of personal injury, always unplug the charger and remove thebatterypackfromthechargerortool before performing any maintenance. Never disassemble the tool, battery pack or charger. Contact a MILWAUKEE service facility for ALL repairs.

Maintaining Tool

Keep your tool, battery pack and charger in good repair by adopting a regular main- tenance program. After six months to one year, depending on use, return the tool, battery pack and charger to a MILWAUKEE service facility for:

•Lubrication

•Brush inspection and replacement

•Mechanical inspection and cleaning (gears, spindles, bearings, housing, etc.)

•Electrical inspection (battery pack, charger, motor)

•Testing to assure proper mechanical and electrical operation

If the tool does not start or operate at full power with a fully charged battery pack, clean the contacts on the battery pack. If the tool still does not work properly, return the tool, charger and battery pack to a MILWAUKEE service facility for repairs.

Maintaining and Storing Battery Pack

V28™ Lithium-Ion battery packs will operate for many years and/or hundreds of charging cycles when they are maintained and used cor- rectly. Refer to your battery pack and charger operator's manual for proper care and use.

WARNING

To reduce the risk of personal in- jury and damage, never immerse your tool, battery pack or charger in liquid or allow a liquid to ﬂow inside them.

Cleaning

Clean out dust and debris from vents and electrical contacts by blowing with com- pressed air. Keep tool handles clean, dry and free of oil or grease. Use only mild soap and a damp cloth to clean the tool, battery pack and charger, keeping away from all electri- cal contacts. Certain cleaning agents and solvents are harmful to plastics and other insulated parts. Some of these include gaso- line, turpentine, lacquer thinner, paint thinner, chlorinated cleaning solvents, ammonia and household detergents containing ammonia. Never use ﬂammable or combustible sol- vents around tools.