Milwaukee 4935, 4995, 5091, 4991, 5051 User Manual

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Milwaukee 4935, 4995, 5091, 4991, 5051 User Manual

OPERATOR'S MANUAL

MANUEL DE L'UTILISATEUR

MANUAL DEL OPERARIO

Catalog No. No de Cat.

Catálogo No. 4931 4935 4991 4995 5051 5091

HEAVY-DUTY BENCH GRINDER

ESMERILADORA DE BANCO PARA SERVICIO PESADO MEULEUSE D’ÉTABLI EXTRA ROBUSTE

TO REDUCE THE RISK OF INJURY, USER MUST READ AND UNDERSTAND OPERATOR'S MANUAL.

AFIN DE RÉDUIRE LE RISQUE DE BLESSURES, L'UTILISATEUR DOIT LIRE ET BIEN COMPRENDRE LE MANUEL DE L'UTILISATEUR.

PARA REDUCIR EL RIESGO DE LESIONES, EL USUARIO DEBE LEER Y ENTENDER EL MANUAL DEL OPERADOR.

GENERAL SAFETY RULES

WARNING!

READ AND UNDERSTAND ALL INSTRUCTIONS

Failure to follow all instructions listed below, may result in electric shock, fire and/or serious personal injury.

SAVE THESE INSTRUCTIONS

READ AND SAVE ALL INSTRUCTIONS FOR FUTURE USE. Before use, be sure everyone using this tool reads and understands this manual as well as any labels packaged with or attached to the tool.

 

 

WORK AREA

 

 

13. DRESS PROPERLY. Do not wear loose clothing or jewelry. Wear a

 

 

 

 

 

 

protective hair covering to contain long hair. These may be caught in

 

 

 

 

 

 

 

 

moving parts. When working outdoors, wear rubber gloves and

1. KEEP WORK AREA CLEAN AND WELL LIT. Cluttered, dark work

 

 

 

 

 

 

insulated non-skid footwear. Keep hands and gloves away from

 

 

areas invite accidents.

 

 

 

 

 

 

 

 

 

 

 

 

moving parts.

 

 

 

 

 

 

 

 

2.

AVOID DANGEROUS ENVIRONMENTS. Do not use your power tool

 

14. REDUCE THE RISK OF UNINTENTIONAL STARTING. Be sure your

 

 

in rain, damp or wet locations or in the presence of explosive atmo-

 

 

 

 

 

 

tool is turned off before plugging it in. Do not use a tool if the power

 

 

spheres (gaseous fumes, dust or flammable materials). Remove

 

 

 

 

 

 

 

 

switch does not turn the tool on and off. Do not carry a plugged-in

 

 

materials or debris that may be ignited by sparks.

 

 

 

 

 

 

 

 

tool with your finger on the switch.

 

 

 

 

 

 

 

 

3.

KEEP BYSTANDERS AWAY. Children and bystanders should be kept

 

15. REMOVE ALL ADJUSTING KEYS AND WRENCHES. Form the habit

 

 

at a safe distance from the work area to avoid distracting the opera-

 

 

 

 

 

 

of checking that adjusting keys, wrenches, etc. are removed from

 

 

tor and contacting the tool or extension cord.

 

 

 

 

 

 

 

 

the tool before turning it on.

 

 

 

 

 

 

 

 

4.

PROTECT OTHERS IN THE WORK AREA from debris such as chips

 

16. DO NOT OVERREACH. MAINTAIN CONTROL. Keep proper footing

 

 

and sparks. Provide barriers or shields as needed.

 

 

 

 

 

 

and balance at all times. Maintain a firm grip. Use extra care when

 

 

 

 

 

 

 

 

5. MAKE WORKSHOP CHILD PROOF with padlocks, master switches,

 

 

 

using tool on ladders, roofs, scaffolds, etc.

 

 

or by removing starter keys.

 

 

 

17. USE SAFETY EQUIPMENT. Everyone in the work area should wear

 

 

 

 

 

 

 

 

ELECTRICAL SAFETY

 

 

 

 

safety goggles or glasses with side shields complying with

 

 

 

 

 

 

 

 

 

 

 

 

current safety standards. Everyday eyeglasses only have impact

 

 

 

 

 

 

 

 

resistant lenses. They are not safety glasses. Wear hearing

6.

GROUNDED TOOLS MUST BE PLUGGED INTO AN OUTLET PROP-

 

 

 

 

 

 

protection during extended use and a dust mask for dusty opera-

 

 

ERLY INSTALLED AND GROUNDED IN ACCORDANCE WITH ALL

 

 

 

 

 

 

 

 

tions. Hard hats, face shields, safety shoes, etc. should be used

 

 

CODES AND ORDINANCES. Never remove the grounding prong or

 

 

 

 

 

 

 

 

when specified or necessary. Keep a fire extinguisher nearby.

 

 

modify the plug in any way. Do not use any adaptor plugs. Check

 

 

 

 

 

18.

KEEP GUARDS IN PLACE and in working order.

 

 

with a qualified electrician if you are in doubt as to whether the

 

 

outlet is properly grounded. If the tool should electrically malfunction

19.

NEVER STAND ON TOOL. Serious injury could occur if the tool is

 

 

or break down, grounding provides a low resistance path to carry

 

 

 

tipped or if the cutting tool is unintentionally contacted.

 

 

electricity away from the user.

 

 

 

20. KEEP HANDS AWAY FROM ALL CUTTING EDGES AND MOVING

7. DOUBLE INSULATED TOOLS ARE EQUIPPED WITH A POLARIZED

 

 

 

 

PARTS.

 

 

PLUG (ONE BLADE IS WIDER THAN THE OTHER.) THIS PLUG

 

 

 

 

 

 

 

WILL FIT IN A POLARIZED OUTLET ONLY ONE WAY. IF THE PLUG

 

 

 

TOOL USE AND CARE

 

 

 

 

 

 

 

 

 

DOES NOT FIT FULLY IN THE OUTLET, REVERSE THE PLUG. IF IT

 

 

 

 

 

 

 

21.

SECURE WORK. Use a clamp, vise or other practical means to hold

 

 

STILL DOES NOT FIT, CONTACT A QUALIFIED ELECTRICIAN TO

 

 

INSTALL A POLARIZED OUTLET. DO NOT CHANGE THE PLUG IN

 

 

 

your work securely, freeing both hands to control the tool.

 

 

ANY WAY. Double insulation

eliminates the need for the three

 

22. DO NOT FORCE TOOL. Your tool will perform best at the rate for

 

 

wire grounded power cord and grounded power supply system.

 

 

 

 

 

 

which it was designed. Excessive force only causes operator

 

 

 

 

 

 

 

 

8.

GUARD AGAINST ELECTRIC SHOCK. Prevent body contact with

 

 

 

fatigue, increased wear and reduced control.

 

 

grounded surfaces such as pipes, radiators, ranges and refrigera-

 

23. USE THE RIGHT TOOL. Do not use a tool or attachment to do a job

 

 

 

 

 

 

tors. When making blind or plunge cuts, always check the work

for which it is not recommended. For example, do not use a circular

area for hidden wires or pipes. Hold your tool by insulated nonmetal

saw to cut tree limbs or logs. Do not alter a tool.

grasping surfaces. Use a Ground Fault Circuit Interrupter (GFCI) to

24. UNPLUG TOOL when it is not in use, before changing accessories

reduce shock hazards.

or performing recommended maintenance.

 

9.DO NOT EXPOSE TO RAIN OR USE IN DAMP

 

 

LOCATIONS.

25. STORE IDLE TOOLS. When not in use, store your tool in a dry,

 

 

secured place. Keep out of reach of children.

10.

DO NOT ABUSE THE CORD. NEVER USE THE CORD TO CARRY

26. NEVER LEAVE THE TOOL RUNNING UNATTENDED. Turn power

 

 

THE TOOLS OR PULL THE PLUG FROM AN OUTLET. KEEP CORD

 

 

off. Do not leave the tool until it comes to a complete stop.

 

 

AWAY FORM HEAT, OIL, SHARP EDGES OR MOVING PARTS. RE-

 

 

 

 

 

PLACE DAMAGED CORDS IMMEDIATELY. Damaged cords in-

27. CHECK FOR DAMAGED PARTS. Inspect guards and other parts

 

 

crease the risk of electric shock.

before use. Check for misalignment, binding of moving parts, im-

 

 

 

 

proper mounting, broken parts and any other conditions that may

 

 

PERSONAL SAFETY

 

 

 

 

affect operation. If abnormal noise or vibration occurs, turn the tool

 

 

 

 

off immediately and have the problem corrected before further use.

11.

KNOW YOUR POWER TOOL. Read this manual carefully to learn

Do not use a damaged tool. Tag damaged tools “DO NOT USE” until

 

 

your power tool’s applications and limitations as well as potential

repaired. A guard or other damaged part should be properly re-

 

 

hazards associated with this type of tool.

paired or replaced by a MILWAUKEE service facility. For all repairs,

12.

STAY ALERT, WATCH WHAT YOU ARE DOING, AND USE COM-

insist on only identical replacement parts.

 

 

MON SENSE WHEN OPERATING A POWER TOOL. DO NOT USE

 

TOOL WHILE TIRED OR UNDER THE INFLUENCE OF DRUGS, ALCOHOL, OR MEDICATION. A moment of inattention while operating power tools may result in serious personal injury.

Page 3

28.USE PROPER ACCESSORIES. Consult this manual for recommended accessories. Using improper accessories may be hazardous. Be sure accessories are properly installed and maintained. Do not defeat a guard or other safety device when installing an accessory or attachment.

29.MAINTAIN TOOLS CAREFULLY. Keep handles dry, clean and free from oil and grease. Keep cutting edges sharp and clean. Follow instructions for lubricating and changing accessories. Periodically inspect tool cords and extension cords for damage. Have damaged parts repaired or replaced by a MILWAUKEE service facility.

30.MAINTAIN LABELS & NAMEPLATES. These carry important information. If unreadable or missing, contact a MILWAUKEE service facility for a free replacement.

SERVICE

31. TOOL SERVICE MUST BE PERFORMED ONLY BY QUALIFIED REPAIR PERSONNEL. Service or maintenance performed by unqualified personnel may result in a risk of injury.

32.WHEN SERVICING A TOOL, USE ONLY IDENTICAL REPLACEMENT PARTS. FOLLOW INSTRUCTIONS IN THE MAINTENANCE SECTION OF THIS MANUAL. Use of unauthorized parts or failure to follow maintenance instructions may create a risk of shock or injury.

SPECIFIC SAFETY RULES — BENCH GRINDERS

1.Hold tool by insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring or its own cord. Contact with a “live” wire will make exposed metal parts of tool “live” and shock the operator.

2.Maintain labels and nameplates. These carry important information. If unreadable or missing, contact a MILWAUKEE service facility for a free replacement.

3.ALWAYS USE PROPER GUARDS AND EYE SHIELDS WITH GRINDING, BUFFING AND WIRE WHEELS. Keep guards in place and in working order. A guard protects the operator from broken wheel fragments.

4.ACCESSORIES MUST BE RATED FOR AT LEAST THE SPEED ON THE TOOL NAMEPLATE. Wheels and other accessories running over rated speed can fly apart and cause injury.

5.REPLACE CRACKED WHEELS IMMEDIATELY.

6.DO NOT OVER TIGHTEN WHEEL NUT.

7.USE ONLY FLANGES FURNISHED WITH THE GRINDER.

8.ADJUST DISTANCE BETWEEN THE WHEEL AND THE WORK REST TO MAINTAIN 1/8” OR LESS OF SEPERATION AS THE DIAMETER OF THE WHEEL DECREASES WITH USE.

9.FREQUENTLY CLEAN GRINDING DUST FROM BENEATH THE GRINDER.

10.WARNING! Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are:

lead from lead-based paint

crystalline silica from bricks and cement and other masonry products, and

arsenic and chromium from chemically-treated lumber.

Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specifically designed to filter out microscopic particles.

Page 4

 

SYMBOLOGY

 

 

 

SPECIFICATIONS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Canadian Standards Association

 

Catalog

 

 

 

 

 

 

Space

NEMA

 

 

 

Volts AC

 

 

Speed

Wheel

Hole

Between

Rated

 

 

 

 

Number

ONLY

Amps

Phase

RPM

Size

Dia.

Wheels

H.P.

 

 

Underwriters Laboratories, Inc.

 

 

 

 

4931*

115

3.8

1

3450

6"

1/2"

12-1/2"

1/3

 

 

 

 

 

 

 

 

4935**

115

3.8

1

3450

6"

1/2"

12-1/2"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4991*

115

4.0

1

3450

7"

5/8"

15-1/8"

1/2

 

 

 

 

4995**

115

4.0

1

3450

7"

5/8"

15-1/8"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5051*

115

4.4

1

3450

8"

3/4"

15-5/8"

3/4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5091*

115/230

8.5/4.2

1

1725

10"

3/4"

17-3/8"

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE: H.P. is NEMA rated

*With Illuminated Eye Shields

**With Plexiglass Eye Shields

FUNCTIONAL DESCRIPTION

4

3

1

2

9

1.Spark guard

2.Grinding wheel

3.Eye shield clamp

4.Eye shield

5.Cooling tray

6. On/Off switch

5

7.Nameplate/Warning label

8. Tool rest

8

7

6

 

 

9.Wheel guard end cover

Page 5

GROUNDING

WARNING!

Improperly connecting the grounding wire can result in the risk of electric 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 plug must be connected to a properly grounded outlet (See Figure A and B). 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 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 ordinances. If the plug and outlet look like those in Figure A, your tool is rated for use on less than 150 volts. If your plug and outlet look like those in Figure B, your tool is rated for use on 150 to 250 volts. Temporary adapters are not available for this type of plug.

Figure C illustrates a temporary adapter available for connecting grounded plugs (Figure A) to two prong outlets. The green rigid ear or lug extending from the adapter must be connected to a permanent ground such as a properly grounded outlet box or receptacle. Simply remove the center screw from the outlet, insert the adapter and reattach the screw through the green grounding ear to the outlet. If in doubt of proper grounding, call a qualified electrician. A temporary adapter should only be used until a properly grounded outlet can be installed by a qualified electrician. The Canadian Electrical Code prohibits the use of temporary adapters.

Fig. A

Fig. B

Green Grounding Ear

Fig. C

EXTENSION CORDS

Grounded tools require a three wire extension cord. Double insulated tools can use either a two or three wire extension cord. As the distance from the supply outlet increases, you must use a heavier gauge extension cord. Using extension cords with inadequately sized wire causes a serious drop in voltage, resulting in loss of power and possible tool damage. Refer to the table at right to determine the required minimum wire size.

The smaller the gauge number of the wire, the greater the capacity of the cord. For example, a 14 gauge cord can carry a higher current than a 16 gauge cord. When using more than one extension cord to make up the total length, be sure each cord contains at least the minimum wire size required. If you are using one extension cord for more than one tool, add the nameplate amperes and use the sum to determine the required minimum wire size.

Guidelines for Using Extension Cords

If you are using an extension cord outdoors, be sure it is marked with the suffix “W-A” (“W” in Canada) to indicate that it is acceptable for outdoor use.

Be sure your extension cord is properly wired and in good electrical condition. Always replace a damaged extension cord or have it repaired by a qualified person before using it.

Protect your extension cords from sharp objects, excessive heat and damp or wet areas.

Recommended Minimum Wire Gauge

for Extension Cords*

Nameplate

Extension Cord Length

Amperes

25'

50'

75'

100'

150'

200'

 

 

 

 

 

 

 

0 - 5

16

16

16

14

12

12

5.1

- 8

16

16

14

12

10

--

8.1 - 12

14

14

12

10

--

--

12.1

- 15

12

12

10

10

--

--

15.1

- 20

10

10

10

--

--

--

 

 

 

 

 

 

 

 

*Based on limiting the line voltage drop to five volts at 150% of the rated amperes.

Page 6

TOOL ASSEMBLY

WARNING!

To reduce the risk of personal injury and damage to the tool, use ONLY accessories rated at or above the RPM listed on the tool's nameplate.

1.Examine a new unit carefully for signs of shipping damage (wheels, guards etc.). Make sure all parts are tight but do not overtighten wheel nut. See “Mounting Wheels”, Fig. 3.

2.Do not operate grinder unless it is securely bolted in place. Two mounting holes are provided in the base of the grinder.

3.Inspect wheel for flaws or cracks and replace a damaged wheel immediately. Use only wheels with a safe speed rating at least as high as the no load speed of the grinder and follow the instructions in Fig. 2.

4.It is possible for a wheel to have concealed flaws. To prevent injury or damage, stand clear of wheel on start up and allow to run for one minute. If vibration and/or noise are present, dress the wheel as instructed in Fig. 5. If the vibration or noise continues, investigate cause and correct before using.

Plexiglass Eye Shields (Fig. 1)

(Standard Equipment for Cat. Nos. 4935 and 4995)

Two separate eye shields (one for each wheel) are supplied and must be used when operating the grinder.

Fig. 1

 

 

Notched

Rod

12 Volt Automotive

Light Bulb

 

Area

 

Eye Shield

Wing

 

 

 

Nut

 

 

Clamp

Wheel Guard

Eye Shield

Illuminated Eye Shields (Fig. 1)

(Standard Equipment for Cat. Nos. 4931, 4991, 5051 and 5091)

Illuminated eye shields are furnished with a 12 volt automotive bulb to light both sides and the face of the grinding wheel. The light socket and bulb are held in place, under each eye shield, by a bolt and a nut that passes through a slot in the rear edge of the eye shield, to clamp the socket assembly in place. Two separate eye shields (one for each wheel) are supplied and must be used when operating the grinder.

Installing Eye Shields

The clamping assemblies for the eye shields are factory installed.

1.To install the eye shields, loosen the wing nut.

2.Insert the rod portion of the shield assembly between the wheel guard and the notched area of the clamp.

3.Adjust the eye shield assembly to the proper height. Tighten the wing nut.

1H.P. Grinder (Cat. No. 5091)

It is recommended that a No. 14 wire, fused with a 15 amp time lag fuse, be used to supply power to all 1H.P. grinders, regardless of their electric rating. This hook up should be independent of other electrical equipment.

The MILWAUKEE 1H.P. Bench Grinder is dual voltage rated at 115/230 Volts. The grinder is factory wired for 115 Volts. The voltage may be changed to 230 Volts, by rewiring the motor connections.

The rewiring should be performed by a qualified electrician or Authorized MILWAUKEE Service Station Personnel.

The wiring diagrams and connections are inside the baseplate of the grinder. Unplug the grinder before removing the baseplate. When changing to 230 volts, the cord set must be wired directly to the power source or wired with a proper 230 volt attachment cord set.

Grinding Wheels

When selecting abrasive wheels, only high quality aluminum oxide or silicon carbide wheels should be used. Aluminum oxide, although not as hard as silicon carbide, is tougher and more resistant to breakage.

Coarse wheels (36 grains of grit per inch) are recommended for rough grinding. Medium grit wheels (60 grit) are excellent for the jobs such as smoothing welds or preparing surfaces for finishing. Fine grit wheels (80 grit) are for sharpening or fine finishing.

Inspecting Grinding Wheels (Fig. 2)

Fig. 2

Test wheels before mounting by tapping it lightly with a nonmetallic tool such as the handle of a screwdriver. If it rings, it is in good condition. If it does not, discard the wheel. Wheel must be dry when applying this test or the sound will be deadened. Tap wheels about 45° on either side of the vertical center line and about 1 or 2 inches from the outside edge as indicated in Fig. 2. Rotate the wheel 45° and repeat the test.

NOTE: Organic bonded wheels do not emit the same clear metallic ring as verified and silicated wheels.

Mounting Wheels (Fig. 3)

Fig. 3

 

 

Wrong

Wrong

Right

Wheel Blotter

 

Properly

 

 

Flange Not Recessed

 

Mounted

Inner Flange Not

 

Wheel

 

 

Keyed To Spindle

 

 

End Nut

Too Tight

1.Unplug tool.

2.To mount the grinding wheels, remove the wheel guard covers from the guards. Remove the hex nuts - the threads on the spindle are such that the nut tightens as the wheel rotates when the tool is in operation.

3.Check to be sure that blotters are undamaged and in place.

4.Slide the grinding wheels on to the spindle so that the blotter rests firmly against the inner wheel flange.

5.Replace the outer wheel flange and nut. Make sure the cupped portion of the outer flange is resting on the wheel (See Fig. 3).

6.Tighten the end nuts only enough to hold the wheel firmly. Too much pressure may damage the wheel or related parts.

7.After the wheel has been mounted, stand aside and run the wheel for at least one minute before grinding. NOTE: Never stand in direct line of the wheel.

Page 7

Tool Rests and Spark Guards (Fig. 4)

Fig. 4

Spark Guard

Tool Rest

The tool rests and spark guards are adjustable and should be reset whenever a wheel has been replaced, after dressing or as a wheel becomes worn. The tool rest should be positioned close to the wheel at all times to provide maximum support. The distance from the wheel should not exceed 1/8". A level tool rest, set slightly below the center of the wheel, is the most practical and safest position.

The spark guards are located at the top of each wheel and should be adjusted for wheel wear so that the guard is approximately 3/16" from the wheel. This will prevent sparks from striking the operator.

OPERATION

WARNING!

To reduce the risk of personal injury, always use safety glasses. Every day eye glasses only have impact resistant lenses. They are NOT safety glasses.

Too much pressure applied to a cold wheel is a common cause of wheel failure and must be avoided. Work should never be forced against a cold wheel but applied gradually, giving the wheel an opportunity to warm and minimize the chance of breakage. This applies to starting work on used wheels as well as to new wheels which have been stored in a cool place. Do not grind on a wheel while it is coasting to a stop or before it has reached full speed.

For best results, always keep grinding wheels properly dressed and in good balance. The use of well balanced wheels will add to the life of the bearings of the grinder by eliminating the most common cause of vibration and permits more accurate work. (See "Dressing Grinding Wheels", Fig. 5.)

When making heavy cuts, use the face, not the sides of the cutting wheel. Grinding on the flat sides of a straight wheel is hazardous and should not be attempted. Special abrasive disc wheels should be used when it is necessary to grind on the flat side of straight wheels. The discs are designed to be mounted with one flat side against a suitable steel machine plate to safely withstand the side pressure.

WARNING!

To reduce the risk of personal injury and damage to the tool, use ONLY accessories rated at or above the RPM listed on the tool's nameplate.

Dressing Grinding Wheels (Fig. 5)

Fig. 5

Wrong

Right

Grinding wheels should be dressed when worn, out of round or the surface face is clogged or worn smooth. New wheels should be balanced by dressing to eliminate vibration. For dressing abrasive wheels, a diamond dresser is preferred. A more common disc-type dresser contains a replaceable set of star or gear-shaped pieces of hard metal. These discs rotate freely and rapidly when held in contact with the moving face of the wheel and dig in to remove the loading and small bits of dulled grain.

To dress wheels, adjust the tool rest away from the wheel so the heel of the dresser hooks over the rest and is guided by it as the dresser is moved evenly across the wheel face. Dressing should start at the highest surface of the wheel face. If vibration is still evident after dressing, loosen the wheel, rotate 90° and tighten. Repeat the dressing procedure.

For Wire Wheel Brush Application

WARNING!

Unplug tool before removing or attaching accessories. Maximum Safe Operating Speed of wire brush or grinding wheel must be greater than no load RPM of tool. Guards must be used with grinding wheels and wire wheels. Only use specifically recommended accessories. Others may be hazardous.

Installing Wire Wheel Brushes

1.Unplug tool.

2.To mount the wire wheels, remove the wheel guard covers from the guards. Remove the hex nuts - the threads on the spindle are such that the nut tightens as the wheel rotates when the tool is in operation.

3.Slide the wire wheel on to the spindle so that the wheel rests firmly against the flange.

4.Replace the outer wheel flange and nut. Make sure the cupped portion of the outer flange is resting on the wheel (See Fig. 3).

5.Tighten the end nuts only enough to hold the wheel firmly. Too much pressure may damage the wheel or related parts.

Using Wire Wheel Brushes

WARNING!

Never exceed Maximum Safe Operating Speed of brush. Do not use a damaged brush or one which is functioning improperly (throwing wires, out-of-balance, etc.). These conditions increase the possibility of further brush failure and possible injury. Discard and replace damaged brushes immediately.

Wire brushes are useful for removing rust, scale, burrs, weld sag, etc. A wide variety of wire brushes are available for many applications.

Test wire brush for balance and loose or damaged wires by running tool at no load speed for at least 30 seconds before applying it to your work. During this time, no one should stand in front of or in line with the tool. When applying brush to work, avoid using too much pressure. This causes over-bending of wires and heat buildup resulting in premature wire breakage, rapid dulling and reduced brush life. Instead of using more pressure, use a wire brush with more aggressive cutting action

(increased wire size, decreased wire length or different brush type, i.e. knot type instead of crimped wire type).

WARNING!

Because the wires on wire wheel brushes are directed towards the operator, a guard must be used to protect the operator when fatigued wires break.

Page 8

MAINTENANCE

WARNING!

To reduce the risk of injury, always unplug your tool before performing any maintenance. Never disassemble the tool or try to do any rewiring on the tool's electrical system. Contact a MILWAUKEE service facility for ALL repairs.

Maintaining Tools

Keep your tool in good repair by adopting a regular maintenance program. Before use, examine the general condition of your tool. Inspect guards, switches, tool cord set and extension cord for damage. Check for loose screws, misalignment, binding of moving parts, improper mounting, broken parts and any other condition that may affect its safe operation. If abnormal noise or vibration occurs, turn the tool off immediately and have the problem corrected before further use. Do not use a damaged tool. Tag damaged tools "DO NOT USE" until repaired (see "Repairs").

WARNING!

To reduce the risk of injury, electric shock and damage to the tool, never immerse your tool in liquid or allow liquid to flow inside the tool.

Repairs

If your tool is damaged, return the entire tool to the nearest service center listed on the back cover of this operator’s manual.

WARNING!

To reduce the risk of injury, use only identical replacement parts.

FIVE YEAR TOOL LIMITED WARRANTY

Every MILWAUKEE tool is tested before leaving the factory and is warranted to be free from defects in material and workmanship. MILWAUKEE will repair or replace (at MILWAUKEE’s discretion), without charge, any tool (including battery chargers) which examination proves to be defective in material or workmanship from five (5) years after the date of purchase. Return the tool and a copy of the purchase receipt or other proof of purchase to a MILWAUKEE Factory Service/Sales Support Branch location or MILWAUKEE Authorized Service Station, freight prepaid and insured. This warranty does not cover damage from repairs made or attempted by other than MILWAUKEE authorized personnel, abuse, normal wear and tear, lack of maintenance, or accidents.

Battery Packs, Flashlights, and Radios are warranted for one (1) year from the date of purchase.

THE REPAIR AND REPLACEMENT REMEDIES DESCRIBED HEREIN ARE

EXCLUSIVE. IN NO EVENT SHALL MILWAUKEE BE LIABLE FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOSS OF PROFITS.

THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, OR CONDITIONS, WRITTEN OR ORAL, EXPRESSED OR IMPLIED FOR

MERCHANTABLILITY OR FITNESS FOR PARTICULAR USE OR PURPOSE.

This warranty gives you specific legal rights. You may also have other rights that vary from state to state and province to province. In those states that do not allow the exclusion of implied warranties or limitation of incidental or consequential damages, the above limitations or exclusions may not apply to you. This warranty applies to the United States,

Canada, and Mexico only.

ACCESSORIES

WARNING!

Unplug tool before removing or attaching accessories. Maximum Safe Operating Speed of wire brush and grinding wheel must be greater than no load RPM of tool. Guards must be used with grinding wheels and wire wheels. Only use specifically recommended accessories. Others may be hazardous.

For a complete listing of accessories refer to your MILWAUKEE Electric Tool catalog or go on-line to www.mil-electric-tool.com. To obtain a catalog, contact your local distributor or a service center listed on the back cover of this operator’s manual.

Wheels For Bench Grinders

NOTE: The maximum safe operating speed shown on the grinding and wire wheels must be greater than the load speed of the tool.

Grinding Wheels

Grinding Wheels are available in 36, 60, and 80 vitrified grit for all types of grinding.

Knot Wire Wheels

Use Knot Wire Wheels for removing rust, scales and file marks.

Brushes

Brushes are made of select steel wire and have a face width of 3/4".

Cloth Buffing Wheels

Use Cloth Buffing Wheels for buffing metal surfaces. These wheels are made of multiple layers of select buffing cloth sewed securely together and can be coated with glue and dipped in emery grit for finish grinding or rough polishing.

Plexiglass Lens

Replacement lens for all light eye shield models and Catalog No. 4995.

Supplied individually.

Plexiglass Eye Shield (Pair)

Furnished as standard equipment on

Catalog No. 4935. Easily replaced when pitted. Supplied as a pair.

Grinder Pedestal

Heavy grey iron casting with tubular steel column. Removable water pot.

Adaptable to all models.

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