Milwaukee Comprehensive Operation Manual for the Power Hammer: 5383-21

OPERATION

WARNING!

To reduce the risk of injury, wear safety goggles or glasses with side shields. Unplug the tool before changing accessories or making adjustments.

Selecting Action (Fig. 4)

The MILWAUKEE 5383-20 Rotary Hammer has two settings: drilling and drilling with hammer action. See “Applications” for recommended set- tings under various conditions.

Fig. 4

Selector lever

1.For drilling, turn the selector lever to the drill symbol .

2.For drilling with hammer action , turn the selector lever

to the hammer-drill symbol .

NOTE: To engage the hammering mechanism, maintain pressure on the bit. When pressure on the bit is released, the hammering action will stop.

Using Forward/Reverse Lever (Fig. 5)

The forward/reverse lever can only be adjusted when the trigger is not pressed. Always allow the motor to come to a complete stop before using the forward/reverse lever.

Fig. 5

Forward Reverse

1.For forward (clockwise) rotation, push the forward/reverse lever

to the symbol .

2.For reverse (counterclockwise) rotation, push the forward/reverse

lever to the symbol .

NOTE: When drilling with hammer action, use the tool in forward rotation (clockwise) only.

Starting, Stopping & Controlling Speed

1.To start the tool, pull trigger.

2.To stop the tool, release trigger.

3.To vary the speed, increase or decrease pressure to trigger. The further the trigger is pulled, the greater the speed.

Operating

Position the tool, grasp the handles firmly and pull the trigger. Always hold the tool securely using both handles and maintain control. 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. 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.

APPLICATIONS

WARNING!

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

Drilling in Wood, Composition Materials and Plastic

When drilling in wood, composition materials and plastic, select the drill operating mode. 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. Select low speeds for plastics with a low melting point.

Drilling in Metal

When drilling in metal, select the drill operating mode. 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.

Drilling in Masonry

When drilling in masonry, select the drill with hammer action operating mode. Use high speed carbide-tipped bits. Drilling soft masonry materials such as cinder block requires little pressure. Hard materials 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 attempt to drill through steel reinforcing rods. Do not use water to settle dust or to cool bit. Both actions will damage the carbide.

page 6