Fig. 2
Fig. B Fig. C
Fig. A

GROUNDING

SPECIFICATIONS

WARNING Improperly connecting the grounding wire can result in the risk of elec- tric shock. Check with a qualified electrician if you are in doubt as to whether the outlet is properly grounded. Do not modify the plug provided with the tool. Never remove the grounding prong from the plug. Do not use the tool if the cord or plug is damaged. If damaged, have it repaired by a MILWAUKEE service facility before use. If the plug will not fit the outlet, have a proper outlet installed by a qualified electrician.

Grounded Tools: Tools with Three Prong Plugs Tools marked “Grounding Required” have a three wire cord and three prong grounding plug. The

cord must be the only wire connected to the tool's grounding system and must never be attached to an electrically “live” terminal. Your tool must be plugged into an appropriate outlet,

properly installed and grounded in accordance with all codes and ordi- nances. The plug and outlet should look like those in Figure A.

DoubleInsulatedTools:ToolswithTwoProngPlugs Tools marked “Double Insulated” do not require grounding. They have a special double insulation system which satisfies OSHA requirements and complies with the applicable standards of Underwrit- ers Laboratories, Inc., the Cana-

dian Standard Association and the National Electrical Code. Double Insulated tools may be used in ei-

Cat. No.

Volts AC

W

No Load RPM

Arbor

*Twist

HSS

Bore

Drill

Cutter

4270-59

220-240

1050

450

19 mm (3/4")

13 mm (1/2")

38 mm (1-1/2")

4270-59A

220-240

1050

450

19 mm (3/4")

13 mm (1/2")

38 mm (1-1/2")

* Requires use of 1/2" drill chuck adapter

FEATURES

Line Lockout

Motor/Magnet Interlock

The line lockout prevents the drill motor from start-

The motor/magnet interlock is a feature that pre-

ing when line power is first applied to the system

vents power from being applied to the drill motor

or after a momentary power loss. To reset tool,

if the magnet is not energized. The motor magnet

turn magnet switch to "OFF" position and drill on/

interlock also prevents the magnet from being de-

off switch to "OFF" position.

energized while the motor is running.

ASSEMBLY

plug must be connected to a properly grounded outlet (See Figure A). If the tool should electrically malfunction or break down, grounding provides a low resistance path to carry electricity away from the user, reducing the risk of electric shock.

The grounding prong in the plug is connected through the green wire inside the cord to the grounding system in the tool. The green wire in the

ther of the 120 volt outlets shown in Figures B and C.

In specific countries, double insulated tools could be used in the out-

put connections suit- able for the plug.

WARNING To reduce the risk of injury, always unplug tool before attaching or remov- ing accessories or making adjustments. Use only specifically recommended accessories. Others may be hazardous.

The set screws contain a nylon patch that prevents them from moving freely. Additional adjustment of the gib may be required from time to time with extended use of the tool.

Adjusting the Support Bracket and Spacer for Depth of Cut

This unit is shipped from the factory set for 1" depth cutters (Fig. 3).

FUNCTIONAL DESCRIPTION

18

 

 

1

 

2

3

4

 

21

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

6

 

19

20

 

 

 

7

 

 

 

 

 

 

 

8

 

 

 

 

 

 

 

 

9

 

 

 

17

 

 

 

 

 

22

 

 

 

 

10

 

 

 

16

 

 

 

 

 

 

 

 

 

 

11

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

 

 

 

15

 

 

 

 

1.

Drill motor

8. Feed handle

 

 

 

 

2.

Slide

9. Grip

 

 

13

 

3.

Wrench storage

10.

Housing

14

 

 

 

(includes 3/32" and

11.

Cord

 

17.

Cutting fluid reservoir

 

 

3/16" hex keys)

12.

Safety strap

 

18.

Control panel

 

4.

Stop knob

13.

Magnetic base

19.

Magnet indicator light

 

5.

Pinion

14.

Spacer

 

20.

Magnet switch

 

6.

Hub

15.

Drill spindle

 

21.

Drill on/off switch

 

7.

Handle screw

16.

Support bracket

22.

Hand pump

 

 

 

 

 

 

20

 

 

WARNING To reduce the risk of injury, wear safety goggles or glasses with side shields.

Attaching Feed Handles and Grips

1.Assemble the feed handles and grips Fig. 1 to the hub. Tighten securely.

2.To mount the hub to either side, align the two (2) dowel pins on the hub with the holes in the pinion. Tighten the handle screw.

Stop Knob

The stop knob is designed to stop the slide from moving. To install, screw stop knob into place.

Adjusting the Gib Assembly

To adjust the gib, loos- en or tighten the gib adjustment set screws on the side of the sup- port housing accord- ingly with the 3/32" hex key provided. Tight- ening the set screws increases friction on the slide. The gib should be set tight enough to support the weight of the drill in any position. All adjusting screws should be set to provide

smooth and even travel over the entire length of slide movement.

21

Fig. 3

Spacer

Support bracket

When using 2" depth cutters, install support bracket with spacer on bottom, as shown in Fig. 4.

Fig. 4

Spacer

Support bracket

NOTE: Do not use a spacer and support bracket with chuck adapter.

Page 11
Image 11
Milwaukee 4270-59A manual Grounding Specifications, Features, Assembly, Functional Description