Hammering or Hammering with Rotation

WARNING!

Applying greater pressure does not increase the tool's effectiveness. If the applied working pressure is too high, the shock absorber will be pushed together making the vibrations to the handle noticeably stronger.

Operator Force (Fig. 6)

These rotary hammers feature the Vibration Isolation System to provide the operator with comfort without sacrificing power or performance. The motor is suspended independently from the switch handle. Insulating elements absorb up to 50% of the vibration when hammering and drilling.

Ideal operator force compresses the bellows slightly and allows the tool to work aggressively while the handle remains steady.

Excessive force compresses the bellows significantly and reduces vi- bration dampening. Users will be able to feel the difference and should adjust the force to the handle accordingly (Fig. 6).

Fig. 6

ideal applied force

excessive applied force

The side handle works in a similar fashion, where moderate operator force dampens vibration and excessive force reduces this effect.

Position the tool, grasp the handles firmly and pull the trigger.

Always hold the tool securely using both handles and maintain control. Use only enough pressure to hold the tool in place and prevent the tip of the bit from wandering. This tool has been designed to achieve top performance with only moderate pressure. Let the tool do the work.

If the speed begins to drop off when drilling deep holes, pull the bit partially out of the hole while the tool is running to help clear dust.

NOTE: Do not use water to settle the dust since it will clog the bit flutes and tend to make the bit bind in the hole. If the bit should bind, a built-in, non-adjustable slip clutch prevents the bit from turning. If this occurs, stop the tool, free the bit and begin again.

Using Rotary Percussion Core Bits (Fig. 7 - 10)

Core bits are useful for drilling large holes for conduit and pipe. MILWAUKEE Heavy-Duty Core Bits have heat-treated steel bodies with durable carbide tips. These core bits 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 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 (Fig. 7).

Fig. 7

3.Insert the adapter into the nose of the tool as described in “Installing Bits”. Set the stop rotation knob to the hammering-with-rotation setting.

4.Press the center pin firmly against your center mark, hold the tool firmly and pull the trigger (Fig. 8).

Fig. 8

NOTE: If a center pin and guide plate are not available, use a tem- plate or notched board to start the hole (Fig. 9).

Fig. 9

5.After drilling to about the depth of the core bit teeth, remove the center pin and guide plate from the core bit. Resume drilling.

6.To change the core bit, 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 (Fig. 10).

Fig. 10

NOTE: To make deeper holes, remove the core bit, break and remove the core. Resume drilling.

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