milwaukee M12 Fuel Impact Wrench User Manual

OPERATOR’S MANUAL

Cat. No.
2554-20, 2555-20, 2555P-20 M12 FUELTM IMPACT WRENCHES

WARNING To reduce the risk of injury, user must read and understand operator’s manual.

GENERAL POWER TOOL SAFETY WARNINGS

WARNING
Read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury. Save all warnings and instructions for future reference. The term “power tool” in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.

WORK AREA SAFETY

• Keep work area clean and well lit. Cluttered or dark areas invite accidents.
• Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.
• Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.

ELECTRICAL SAFETY

• Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk of electric shock.
• Avoid body contact with earthed or grounded surfaces, such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
• Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.
• Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.
• When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.
• If operating a power tool in a damp location is unavoidable, use a ground fault circuit interrupter (GFCI) protected supply. Use of an GFCI reduces the risk of electric shock.

PERSONAL SAFETY

• Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury.
• Use personal protective equipment. Always wear eye protection. Protective equipment such as a dust mask, non-skid safety shoes, hard hat or hearing protection used for appropriate conditions will reduce personal injuries.
• Prevent unintentional starting. Ensure the switch is in the off-position before connecting to power source and/or battery pack, picking up or carrying the tool. Carrying power tools with your finger on the switch or energizing power tools that have the switch on invites accidents.
• Remove any adjusting key or wrench before turning the power tool on. A wrench or a key left attached to a rotating part of the power tool may result in personal injury.
• Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations.
• Dress properly. Do not wear loose clothing or jewelry. Keep your hair and clothing away from moving parts. Loose clothes, jewelry or long hair can be caught in moving parts.
• If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. Use of dust collection can reduce dust-related hazards.
• Do not let familiarity gained from frequent use of tools allow you to become complacent and ignore tool safety principles. A careless action can cause severe injury within a fraction of a second.

POWER TOOL USE AND CARE

• Do not force the power tool. Use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed.
• Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot be controlled with the switch is dangerous and must be repaired.
• Disconnect the plug from the power source and/or remove the battery pack, if detachable, from the power tool before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.
• Store idle power tools out of the reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool. Power tools are dangerous in the hands of untrained users.
• Maintain power tools and accessories. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool’s operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools.
• Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.
• Use the power tool, accessories and tool bits etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of the power tool for operations different from those intended could result in a hazardous situation.
• Keep handles and grasping surfaces dry, clean and free from oil and grease. Slippery handles and grasping surfaces do not allow for safe handling and control of the tool in unexpected situations.

BATTERY TOOL USE AND CARE

• Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.
• Use power tools only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.
• When battery pack is not in use, keep it away from other metal objects, like paper clips, coins, keys, nails, screws or other small metal objects, that can make a connection from one terminal to another. Shorting the battery terminals together may cause burns or a fire.
• Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the battery may cause irritation or burns.
• Do not use a battery pack or tool that is damaged or modified. Damaged or modified batteries may exhibit unpredictable behavior resulting in fire, explosion or risk of injury.
• Do not expose a battery pack or tool to fire or excessive temperature. Exposure to fire or temperature above 265°F (130°C) may cause explosion.
• Follow all charging instructions and do not charge the battery pack or tool outside the temperature range specified in the instructions. Charging improperly or at temperatures outside the specified range may damage the battery and increase the risk of fire.

SERVICE

• Have your power tool serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained.
• Never service dmaged battery packs. Service of battery packs should only be performed by the manufacturer or authorized service providers.

SPECIFIC SAFETY RULES FOR IMPACT WRENCH

• Hold power tool by insulated gripping surfaces, when performing an operation where the fastener may contact hidden wiring. Fasteners contacting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock.
• Wear ear protectors when impact drilling. Exposure to noise can cause hearing loss.
• Use only sockets and other accessories specifically designed for use on impact wrenches and drivers. Other sockets and accessories might shatter or break causing injury.
• Always use common sense and be cautious when using tools. It is not possible to anticipate every situation that could result in a dangerous outcome. Do not use this tool if you do not understand these operating instructions or you feel the work is beyond your capability; contact Milwaukee Tool or a trained professional for additional information or training.
• Maintain labels and nameplates. These carry important information. If unreadable or missing, contact a MILWAUKEE service facility for a free replacement.
• 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 specially designed to filter out microscopic particles.

FUNCTIONAL DESCRIPTION

1. Belt clip
2. Control switch
3. Handle
4. Trigger
5. LED| 6. 3/8″ Friction ring (Cat. No. 2554-20)
7. 4-Mode drive control
8. 1/2″ Friction ring (Cat. No. 2555-20)
9. 1/2″ Square drive with pin detent
(Cat. No. 2555P-20)
---|---

SYMBOLOGY

| Volts
---|---
| Direct Current
| No Load Revolutions per Minute (RPM)
| Impacts per Minute Under Load (IPM)
| UL Listing for Canada and U.S.

SPECIFICATIONS

Cat. No. …………………2554-20, 2555-20, 2555P-20
RPM ………………………………………………….. 0 – 2700
IPM …………………………………………………… 0 – 3200
Volts…………………………………………………….. 12 DC
Battery Type ………………………………………….M12™
Charger Type…………………………………………M12™
Recommended Ambient
Operating Temperature ………………….0°F to 125°F

ASSEMBLY

WARNING Recharge only with the charger specified for the battery. For specific charging instructions, read the operator’s manual supplied with your charger and battery.
Removing/Inserting the Battery
To remove the battery, push in the release buttons and pull the battery pack away from the tool.

WARNING
Always remove battery pack before changing or removing accessories.
To insert the battery, slide the pack into the body of the tool. Make sure it latches securely into place.

WARNING
Only use accessories specifically recommended for this tool. Others may be hazardous.
Use only sockets and other accessories specifically designed for use on impact wrenches and drivers. Other sockets and accessories might shatter or break causing injury.
Attaching and Removing Accessories
3/8″ and 1/2″ Friction Ring (Cat. No. 2554-20 and 2555-20)

1. Use only the appropriate size Square Drive Sockets.
2. To attach a socket, align the accessory with the anvil and push it firmly over the retaining ring.
3. To remove the accessory, pull the accessory off the anvil.

1/2″ Pin Detent (Cat. No. 2555P-20)

1. Use only the appropriate size Square Drive Sockets.

2. To attach a socket, align the hole in the accessory with the detent pin on the anvil. Hold the detent pin in while pushing the socket onto the anvil.
   The detent pin will snap into place in the hole to secure the socket.

3. To remove the socket, insert a nail or other thin object into the hole in the accessory and press in the detent pin. Pull the accessory off the anvil.

OPERATION

WARNING
To reduce the risk of injury, always wear proper eye protection marked to comply with ANSI Z87.1.
Always remove battery pack before changing or removing accessories. Only use accessories specifically recommended for this tool. Others may be hazardous.

Fuel Gauge
To determine the amount of charge left in the battery, turn the tool ON. The Fuel Gauge will light up for 2-3 seconds. When less than 10% of charge is left, 1 light on the fuel gauge will flash 4 times. To signal the end of charge, 1 light on the fuel gauge will flash 8 times and the tool will not run. Charge the battery pack.
If the battery becomes too hot, the fuel gauge lights will flash in an alternating pattern and the tool will not run. Allow the battery to cool down.

Using the Drive Control
The drive control button is used to adjust the rotation speed(RPM) for the application.
To select the drive contmode:

1. Pull and release the trigger to turn on the tool. The current indicator is lit.
2. Press the drive control button to cycle through the 4 modes. When the desired mode indicator is lit, begin work.
   In auto shut off mode , the tool will drive forward at a reduced RPM until the torque is achieved. In reverse the tool will operate at full RPM to remove fasteners at full torque. Mode| RPM| IPM
   ---|---|---
   1| 0-1200| 0-1100
   2| 0-1800| 0-2100
   3| 0-2700| 0-3200
   | 0-2700| –

Using the Control Switch
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 pressed. Always allow the motor to come to a complete stop before using the control switch.

1. For forward (clockwise) rotation, push the control switch in the direction shown. Check the direction of rotation before use.
2. For reverse (counterclockwise) rotation, push the control switch in the direction shown. Check the direction of rotation before use.
3. To lock the trigger, push the control switch to the center position. The trigger will not work when the control switch is in the locked position.
   Always remove the battery pack before performing maintenance, changing accessories, storing the tool and any time the tool is not in use.

Starting, Stopping and Controlling Speed
These tools may be operated at any speed from 0 to full speed.

1. To start the tool, pull the trigger.
   NOTE: An LED is turned on when the trigger is pulled.

2. To vary the driving speed, simply increase or decrease pressure on the trigger. The further the trigger is pulled, the greater the speed.

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

Impacting Techniques
The longer a bolt, screw, or nut is impacted, the tighter it will become. To help prevent damaging the fasteners or workpieces, avoid excessive impacting. Be particularly careful when impacting smaller fasteners because they require less impacting to reach optimum torque. Practice with various fasteners, noting the length of time required to reach the desired torque. Check the tightness with a hand-torque wrench. If the fasteners are too tight, reduce the impacting time. If they are not tight enough, increase the impacting time. Oil, dirt, rust or other matter on the threads or under the head of the fastener affects the degree of tightness. The torque required to loosen a fastener averages 75% to 80% of the tightening torque, depending on the condition of the contacting surfaces.
On light gasket jobs, run each fastener down to a relatively light torque and use a hand torque wrench for final tightening.

MAINTENANCE

WARNING
To reduce the risk of injury, always unplug the charger and remove the battery pack from the charger or tool before performing any maintenance. Never disassemble the tool, battery pack or charger. Contact a MILWAUKEE service facility for ALL repairs.

Maintaining Tool
Keep your tool, battery pack and charger in good repair by adopting a regular maintenance program. Inspect your tool for issues such as undue noise, misalignment or binding of moving parts, breakage of parts, or any other condition that may affect the tool operation. Return the tool, battery pack, and charger
to a MILWAUKEE service facility for repair. After six months to one year, depending on use, return the tool, battery pack and charger to a MILWAUKEE service facility for inspection.
If the tool does not start or operate at full power with a fully charged battery pack, clean the contacts on the battery pack. If the tool still does not work properly,
return the tool, charger and battery pack, to a MILWAUKEE service facility for repairs.

WARNING
To reduce the risk of personal injury and damage, never immerse your tool, battery pack or charger in liquid or allow a liquid to flow inside them.

Cleaning
Clean dust and debris from vents. Keep handles clean, dry and free of oil or grease. Use only mild soap and a damp cloth to clean, since certain cleaning agents and solvents are harmful to plastics and other insulated parts. Some of these include gasoline, turpentine, lacquer thinner, paint thinner, chlorinated cleaning solvents, ammonia and household detergents containing ammonia.
Never use flammable or combustible solvents around tools.

Repairs
For repairs, return the tool, battery pack and charger to the nearest authorized service center.

ACCESSORIES

WARNING
Use only recommended accessories. Others may be hazardous.
For a complete listing of accessories, go online to www.milwaukeetool.com or contact a distributor.

SERVICE – UNITED STATES
1-800-SAWDUST (1.800.729.3878)
Monday-Friday, 7:00 AM – 6:30 PM CST
or visit www.milwaukeetool.com

Contact Corporate After Sales Service Technical
Support with technical, service/repair, or warranty questions.
Email: metproductsupport@milwaukeetool.com
Become a Heavy Duty Club Member at www.milwaukeetool.com to receive important notifications regarding your tool purchases.

SERVICE – CANADA
Milwaukee Tool (Canada) Ltd
1.800.268.4015
Monday-Friday, 7:00 AM – 4:30 PM CST
or visit www.milwaukeetool.ca

LIMITED WARRANTY USA & CANADA

Every MILWAUKEE power tool* (see exceptions below) is warranted to the original purchaser only to be free from defects in material and workmanship. Subject to certain exceptions, MILWAUKEE will repair or replace any part on an electric power tool which, after examination, is determined by MILWAUKEE to be defective in material or workmanship for a period of five (5) years* after the date of purchase unless otherwise noted. Return of the power tool to a MILWAUKEE factory Service Center location or MILWAUKEE Authorized Service Station, freight prepaid and insured, is required. A copy of the proof of purchase should be included with the return product. This warranty does not apply to damage that MILWAUKEE determines to be from repairs made or attempted by anyone other than MILWAUKEE authorized personnel, misuse, alterations, abuse, normal wear and tear, lack of maintenance, or accidents.
Normal Wear: Many power tools need periodic parts replacement and service to achieve best performance. This warranty does notcover repair when normal use has exhausted the life of a part including, but not limited to, chucks, brushes, cords, saw shoes, blade clamps, o-rings, seals, bumpers, driver blades, pistons, strikers, ifters, and bumper cover washers.
This warranty does not cover Air Nailers & Staplers; Airless Paint Sprayer; Cordless Battery Packs; Gasoline Driven Portable Power Generators; Hand Tools; Hoist – Electric, Lever & Hand Chain; M12™ Heated Gear; Reconditioned Product; and Test & Measurement Products.
There are separate and distinct warranties available for these products.
**The warranty period for Job Site Radios, M12™ Power Port, M18™ Power Source, Jobsite Fan and Trade Titan™ Industrial Work Carts is one (1) year from the date of purchase. The warranty period for the Drain Cleaning Cables and AIRSNAKE™ Drain Cleaning Air Gun Accessories is two (2) years from the date of purchase. The warranty period for the M18™ Compact Heat Gun, 8 Gallon Dust Extractor, M18™ Framing Nailers, M18 FUEL™ 1/2″ Ext. Anvil Controlled Torque Impact Wrench w/ ONE-KEY™, and the M18 FUEL™ 1″ High Torque Impact Wrench w/ ONE-KEY™ is three (3) years from the date of purchase. The warranty period for the LED in the LED Work Light and the LED Upgrade Bulb for the Work Light is the lifetime of the product subject to the limitations above. If during normal use the LED or LED Bulb fails, the part will be replaced free of charge. Warranty Registration is not necessary to obtain the applicable warranty on a MILWAUKEE power tool product.
The manufacturing date of the product will be used to determine the warranty period if no proof of purchase is provided at the time warranty service is requested.
ACCEPTANCE OF THE EXCLUSIVE REPAIR AND REPLACEMENT REMEDIES DESCRIBED HEREIN IS A CONDITION OF THE CONTRACT
FOR THE PURCHASE OF EVERY MILWAUKEE PRODUCT. IF YOU DO NOT AGREE TO THIS CONDITION, YOU SHOULD NOT PURCHASE
THE PRODUCT.
IN NO EVENT SHALL MILWAUKEE BE LIABLE FOR ANY INCIDENTAL, SPECIAL, CONSEQUENTIAL OR PUNITIVE DAMAGES, OR FOR ANY COSTS, ATTORNEY FEES, EXPENSES, LOSSES OR DELAYS ALLEGED TO BE AS A CONSEQUENCE OF ANY DAMAGE TO, FAILURE
OF, OR DEFECT IN ANY PRODUCT INCLUDING, BUT NOT LIMITED TO, ANY CLAIMS FOR LOSS OF PROFITS. SOME STATES DO NOT ALLOW THE EX-CLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR  EXCLUSION MAY NOT APPLY TO YOU. THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS WARRANTIES, WRITTEN OR ORAL. TO THE EXTENT PERMITTED BY LAW, MILWAUKEE DISCLAIMS ANY IMPLIED WARRANTIES, INCLUDING WITHOUT  LIMITATION ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE OR PURPOSE; TO THE EXTENT SUCH DISCLAIMER IS NOT PERMITTED BY LAW, SUCH IMPLIED WARRANTIES ARE LIMITED TO THE DURATION OF THE APPLICABLE EXPRESS WARRANTY AS DESCRIBED ABOVE. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU, THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE. This warranty applies to product sold in the U.S.A. and Canada only. Please consult the ‘Service Center Search’ in the Parts & Service section of MILWAUKEE’s website www.milwaukeetool.com or call 1.800. SAWDUST (1.800.729.3878) to locate your nearest service facility for warranty and non-warranty service on a Milwaukee electric power tool.

LIMITED WARRANTY – MEXICO, CENTRAL AMERICA & CARIBBEAN

TECHTRONIC INDUSTRIES’ warranty is for 5 years since the original purchase date. This warranty card covers any defect in material and workmanship on this Product. To make this warranty valid, present this warranty card, sealed/stamped by the distributor or store where you purchased the product, to the Authorized Service Center (ASC). Or, if this card has not been sealed/stamped, present the original proof of purchase to the ASC. Call 55 4160-3547 to find the nearest ASC, for service, parts, accessories or components.

Procedure to make this warranty valid
Take the product to the ASC, along with the warranty card sealed/ stamped by the distributor or store where you purchased the product, and any faulty piece or component will be replaced without cost for you. We will cover all freight costs relative with this warranty process.

Exceptions
This warranty is not valid in the following situations
a) When the product is used in a different manner from the end-user guide or instruction manual.
b) When the conditions of use are not  normal.
c) When the product was modified or repaired by people not authorized by TECHTRONIC INDUSTRIES.
Note: If cord set is damaged, it should be replaced by an Authorized
Service Center to avoid electric risks.
SERVICE AND ATTENTION CENTER
Call to 55 4160-3547
IMPORTED AND COMMERCIALIZED BY TECHTRONIC INDUSTRIES MEXICO, S.A. DE C.V.
Miguel de Cervantes Saavedra No.301 Piso 5, Torre Norte 11520 Colonia Ampliación Granada Miguel Hidalgo, Ciudad de Mexico, Mexico

Model: __
Date of Purchase: _____
Distributor or Store Stamp: __

SERVICE PARTS LIST

BULLETIN NO. 54-26-2570

SPECIFY CATALOG NO. AND SERIAL NO. WHEN ORDERING PARTS| REVISED BULLETIN| DATE
June 2018
---|---|---
M12TM FUELTM 3/8″ Impact Wrench w/ Friction Ring
WIRING INSTRUCTION
See Pages 2 & 3
CATALOG NO. 2554-20| STARTING
SERIAL NO. J61A

EXAMPLE:
Component Parts (Small #)
Are Included When Ordering The Assembly (Large #).

FIG. LUBRICATION (Type ‘J’ Grease, No. 49-08-4220): When servicing, remove 90-95% of the existing grease prior to installing Type ‘J’. Original grease  maybe similar in color but not compatible with ‘J’.
2 Coat anvil opening in the front of the gear case with grease.
3 Coat gear case washer with grease.
6 Lightly coat round shaft surface of anvil with grease. Place a dab of grease in cavity at rear of anvil.
54 Lightly coat the inside gear teeth of ring gear and the gear teeth of the planet gears of impacting assembly with grease.
57 Coat pinion of rotor/back cap assembly with grease.

SCREW TORQUE SPECIFICATIONS

FIG.| PART NO.| WHERE USED| SEAT TORQUE
(KG/CM) (IN/LBS)
1| 05-88-1255| Front Gear Case 14-17| 12-14
30| 06-82-6351| Rotor/Back Cap 6-8| 5-6
30| 06-82-6351| Right Housing-Cover 9-11| 7-9
32| 05-88-1015| Belt Clip 5-9| 4-7

MILWAUKEE TOOL l www.milwaukeetool.com
13135 W. LISBON RD., BROOKFIELD, WI 53005
Drwg. 1

WIRING INSTRUCTIONS- one of two

STEP 1: Insert light pipe in cavity of left housing halve-support.

STEP 2: Assemble HV terminal over screw boss and route HV terminal wire through channels and traps as shown.

STEP 3: Assemble PCBA into corresponding housing cavity as shown.

STEP 4: Install LED lens and tuck LED wires down in housing cavity, over HV terminal wire.

STEP 5: Install the pop switch into housing halve as shown. Route wires through traps being sure wires are tucked completely down.

STEP 6: Assemble stator over pop switch wires. Be sure stator is seated firmly and squarely in housing halve.

STEP 7: Install forward/reverse shuttle and on-off switch into left housing halve-support. Be sure shuttle is properly seated over the forward/reverse tab on top of on-off switch.

STEP 8: Route the PCBA wires connected with battery terminal into the wire channel of left housing as shown.

STEP 9: Use a plastic/nylon instrument to carefully press blue wire into housing cavity, over the battery terminal wires.

STEP 10: Install battery terminal block into the housing halve being sure that it is firmly and squarely seated in the cavity.

STEP 11: Assemble the gear case assembly onto the left housing halve and secure with two gear case screws.
Check that all elements of electronics assembly are seated properly and that all wires are pressed completely down in wire traps and channels. Carefully install right housing halve-cover onto left housing halve-support. Secure with five housing halve screws and the two remaining gear case screws. Install rotor back cap assembly and secure with four screws.
Check functionality of shuttle and on-off switch before installing battery.

References

• Milwaukee® Tool Official Site | Nothing but HEAVY DUTY®

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