Using Control Switch (Fig. 9, 10, and 11)

The control switch may be set to three positions: forward, reverse and lock. Due to a lockout mechanism, the control switch can only be adjusted when the ON/OFF switch is not depressed. Always allow the motor to come to a complete stop be- fore using the control switch.

For forward (clockwise) rotation, push in the control switch from the right side of the tool (Fig. 9). Check the direction of rotation before use.

Fig. 9

Push in for forward

For reverse (counterclockwise) rotation, push in the control switch from the left side of the tool (Fig. 10). Check direc- tion of rotation before use.

Fig. 10

Push in for reverse

To lock the trigger, push the control switch to the center position (Fig. 11). The trigger will not work while the control switch is in the center locked position. Always lock the trigger or remove the battery pack before

performing maintenance, changing acces- sories, storing the tool and any time the tool is not in use.

Fig. 11

Push to center position to lock trigger

Starting, Stopping & Controlling Speed

1.To start the tool, pull the trigger.

2.To stop the tool, release the trigger and an electric brake stops the tool instantly.

All models feature variable speed control. To vary the speed, simply increase or de- crease pressure on the trigger. The further the trigger is pulled, the greater the speed.

Drilling

Set both the hammer/drill and torque selec- tor collars to the drill positions.

Place the bit on the work surface and ap- ply firm pressure before starting. Too much pressure will slow the bit and reduce drill- ing efficiency. Too little pressure will cause the bit to slide over the work area and dull the point of the bit.

If the tool begins to stall, reduce pressure slightly to allow the bit to regain speed. If the bit binds, reverse the motor to free the bit from the workpiece.

Drilling in Masonry

When drilling in masonry, select the

hammer-drill operating mode (Cat. No. 0613-20, 0614-20, and 0624-20 only). Use high speed carbide-tipped bits. Drilling soft masonry materials such as cin- der block requires little pressure. Hard ma- terials like concrete require more pressure. A smooth, even flow of dust indicates the proper drilling rate. Do not let the bit spin in the hole without cutting. Do not use water to settle dust or to cool bit. Both actions will damage the carbide.

Driving Screws and Nut Running

Drill a pilot hole when driving screws into thick or hard materials. Set the torque se- lector collar to the proper position and set the speed to low. Use the proper style and size screwdriver bit for the type of screw you are using.

With the screwdriver bit in the screw, place the tip of the screw on the workpiece and apply firm pressure before pulling the trig- ger. Screws can be removed by reversing the motor.

Overloading

Continuous overloading may cause per- manent damage to tool or battery pack.

WARNING!

High rotational force. To reduce

To reduce the chance of bit binding:

Use sharp bits. Sharp bits are less likely to bind when drilling.

Use the proper bit for the job. There are bits that are designed for specific pur- poses.

Use caution when drilling pitchy, knotty, wet or warped material or when drilling in material that may contain nails.

Typical Bracing Methods

Fig. 12

Forward rotation

Reaction

Bracing against the floor

Fig. 13

Forward rotation

Reaction

Bracing against your leg

APPLICATIONS

the risk of injury, always hold or brace securely. Always use side handle on tools.

Fig. 14

Reaction

 

WARNING!

To reduce the risk of electric shock, check work area for hidden pipes and wires before drilling or driving screws.

the hole frequently to clear chips from the bit flutes. To reduce the chance of splinter- ing, back work with a piece of scrap wood. Select low speeds for plastics with a low melting point.

Drilling in Metal

Bit Binding

A high rotational force occurs when a bit binds. If the bit binds, the tool will be forced in the opposite direction of the bit rotation. Bits may bind if they are misaligned or when they are breaking through a hole. Wood boring bits can also bind if they run into

Drilling in Wood, Composition Materials and Plastic

When drilling in wood, composition materi- als and plastic, start the drill slowly, gradu- ally 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

When drilling in metal, use high speed steel twist drills or hole saws. Use a center punch to start the hole. Lubricate drill bits with cutting oil when drilling in iron or steel. Use a coolant when drilling in nonferrous metals such as copper, brass or aluminum. Back the material to prevent binding and distortion on breakthrough.

nails or knots. Be prepared for bit binding situations.

Reverse rotation

Forward rotation

Bracing against a stud

10

11

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Milwaukee Hammer Drill manual Applications