milwaukee 2646-20 M18 Cordless Grease Gun User Manual

OPERATOR’S MANUAL

Cat. No. / No de cat.
2646-20
M18™ CORDLESS GREASE GUN
WARNING To reduce the risk of injury, the user must read and understand the 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 that may ignite 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. Unmodifi ed plugs and matching outlets will reduce the 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. The 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. The use of a 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 a 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 aff ect 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 diff erent 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 specifi ed by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fi re when used with another battery pack.
• Use power tools only with specifi cally designated battery packs. Use of any other battery packs may create a risk of injury and fire.
• When the 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 modifi ed. Damaged or modifi ed batteries may exhibit unpredictable behavior resulting in fi re, explosion or risk of injury.
• Do not expose a battery pack or tool to fi re or excessive temperature. Exposure to fire or temperature above 265°F (130°C) may cause an explosion.
• Follow all charging instructions and do not charge the battery pack or tool outside the temperature range specifi ed in the instructions. Charging improperly or at temperatures outside the specifi ed 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 damaged battery packs. Service of battery packs should only be performed by the manufacturer or authorized service providers.

SPECIFIC SAFETY RULES FOR GREASE GUN

• High pressure can cause some tool parts or hose assembly to rupture, posing a risk of injection injury and/or amputation. Inspect tool and hose assembly for damage or wear before each use. Do not use if damaged or worn.
• Do not operate without proper safety apparel, including eye protection marked to comply with ANSI Z87.1, and gloves.
• Hold Hose Assembly by spring strain relief to avoid kinking the hose.
• Grease and lubricants may be flammable. Do not expose to flame or heat source. Follow all warnings and instructions from the grease and lubricant manufacturer.
• 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 contain 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.

SYMBOLOGY

V

| Volts
---|---
| Direct Current

PSI

| Pounds per Square Inch
| Read Operator’s Manual
| UL Listing for Canada and U.S.

FUNCTIONAL DESCRIPTION

1. Handle
2. Trigger
3. Trigger lock-on/off
4. LED ON/OFF
5. LED
6. Hose Assembly
7. Strain relief
8. Strap eyelets| 9. Bolt
10. Bleed valve
11. Hose clamp
12. Barrel
13. Rod handle
14. Loader coupler
15. Counter dial
16. Speed control
---|---

SPECIFICATIONS

Cat. No. ……………………………………………..2646-20
Volts……………………………………………………..18 DC
Battery Type ………………………………………….M18™
Charger Type…………………………………………M18™
Max. Operating Pressure……………1 …..10,000 psi (690 bar) 2 ……..5000 psi (345 bar)
Flow Rate ………………………………..1 …..3.5 oz/min 2 ……10 oz/min
Barrel Capacity …………………………………16 oz Bulk 14.5 oz Cartridge
Hose Rating ……………………….10,000 psi (690 bar)
Recommended Ambient
Operating Temperature ………………….0°F to 125°F

ASSEMBLY

WARNING
Recharge only with the charger specifi ed for the battery. For specifi c charging instructions, read the operator’s manual supplied with your charger and battery. Removing/Inserting the Battery To remove the battery, push the release buttons and pull the battery pack away from the tool.
WARNING
Always lock the trigger or remove the battery pack any time the tool is not in use.
To insert the battery, slide the pack into the body of the tool. Make sure it latches securely into place.
WARNING
Only use accessories specifi cally recommended for this tool. Others may be hazardous.

Installing the Clear Barrel

(Accessory Cat. No. 49-16-2646)
A clear grease barrel is offered to replace the provided steel barrel.

1. To install the clear barrel, unscrew and remove the steel grease barrel from the tool.
2. Unscrew the cap with a rod from the back of the steel barrel.
3. Remove the spacer screw with a Phillips screwdriver, and remove the plastic spacer by squeezing the two retention tabs and pulling away from the tool.
4. Screw the back cap with the rod onto the clear barrel.
5. Screw the clear barrel into the tool.

OPERATION

WARNING
Always remove the battery pack before changing or removing accessories. Only use accessories specifically recommended for this tool. Others may be hazardous. To reduce the risk of injury, always wear proper eye protection marked to comply with ANSI Z87.1.
Fuel Gauge
To determine the amount of charge left in the battery, pull the trigger.
The Fuel Gauge will light up for 2-3 seconds. To signal the end of charge, 1 light on the fuel gauge will flash for 2-3 seconds.
Installing a Fitting/Coupler
Screw the appropriate coupler to the end of the hose assembly. Use only accessories rated for at least 10,000 psi (690 bar).

CAUTION
To avoid contamination in the grease gun, Always make sure the barrel (inside and outside) and surfaces contacting the barrel are clean of dirt, dust, and debris. This debris can be pulled into the grease gun and clog the valve.
Grease Cartridge Loading

1. Remove the battery pack.
2. Pull back the rod, and push it sideways into the retaining slot. Ensure the rod is securely seated in the slot or it may spring back.
3. Unscrew and remove the barrel. 4. Remove the cap from the cartridge.
4. Insert the cartridge, open end first, into the barrel.
5. Remove the seal from the cartridge.
6. Screw the barrel into the grease gun.
7. Release the rod from the retaining slot and press it completely into the barrel.
8. Prime the grease gun according to “Priming the Grease Gun”

Bulk Grease Loading
Bulk grease can be loaded in 2 ways, using the barrel for suction loading, or using a pump to load grease through a coupler.
Suction Loading

1. Remove the battery pack.
2. Unscrew and remove the barrel.
3. Insert the open end of the barrel below the surface of the bulk grease.
4. Pull back the rod, and push it sideways into the retaining slot.
5. Remove the barrel from the bulk grease.
6. Wipe excess grease from the outside of the barrel and screw it into the grease gun.
7. Release the rod from the retaining slot and press it completely into the barrel.
8. Prime the grease gun according to “Priming the Grease Gun”

WARNING
To reduce the risk of injury, use only low-pressure loader fithings. Excessive pressure can be caused by high-pressure loader fithings.
Pump Loading

1. Remove the battery pack.

2. Pull back the rod and turn the rod handle to lock into the plunger. Release the rod/plunger. Do NOT push the rod into the retaining slot.

3. Insert the loader fitting into the grease gun loader coupler.
   CAUTION
   To avoid damage to the grease gun and pump, the loader fitting MUST be compatible with the coupler and rated for at least 10,000 psi (690 bar).

4. Operate the loader pump until the rod has been pushed out of the barrel approximately 8″.

5. Rotate the rod handle to release the plunger. Press the rod completely into the barrel.

6. Prime the grease gun according to “Priming the Grease Gun”

Priming the Grease Gun

1. Insert the battery pack
2. Push the priming valve until all air has escaped.
3. Hold the hose assembly by the spring strain relief and point away from your body.
4. Pull the trigger for 10-20 seconds.
5. If grease doesn’t appear, repeat step 2.

NOTE : This tool has been tested to factory standards, which results in a small amount of grease being left in the pump body, hose, and coupler assembly.
It is recommended that you purge this tool with the brand of grease you will be using before actual use.

LED
To turn the LED on or off, press the LED button or pull the trigger. The LED will go off automatically 10 minutes after last use.
Counter Dial
The counter dial can be set to limit the amount of grease dispensed. Set the dial to ON to dispense grease as long as the trigger is pulled. Set the dial to “1” through “50” to dispense grease for a specifi c number of piston strokes. NOTE: The counter is reset
each time the trigger is pulled. If the counter is set for 10, but the trigger is only pulled for 6 strokes, the next time the trigger is pulled it will start over.
Speed Control
Push the speed control switch to display “1” for low flow rate, high pressure. Push the speed control switch to display “2” for high flow rate, low pressure.
Troubleshooting

Air pockets in the barrel,  prime the grease gun
Contamination in grease barrel, see “Clearing Contamination”
Grease gun stops pumping after one/ several pump strokes| Confirm that the Counter dial is set to the “ON” position

Clearing Contamination

If the motor runs when the trigger is pulled, but there is no pumping sound and grease is not dispensed, there may be contamination in the grease gun. Always make sure the barrel (inside and outside) and surfaces contacting the barrel are clean of dirt, dust, and debris. This debris can be pulled into the grease gun and clog the valve.
To clear the contamination:

1. Check to be sure the tool is properly primed and that there is sufficient grease in the barrel. If the problem persists…
2. Remove the hose assembly.
3. Pull and hold the trigger for up to 45 seconds. If grease begins to pump out of the tool the debris has been cleared. Reattach the hose assembly and begin using the tool. If the problem persists.
4. Remove the bolt from below the hose assembly.
5. Pull the trigger for 15 seconds to clear the contamination.
6. If a spring or ball is expelled, wipe away any contamination and reinsert, as shown.
7. Reattach the bolt and tighten securely.
8. Pull the trigger for 30 seconds. 9. Reattach the hose assembly and begin using the tool.

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 any vents. Keep the tool 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 notifi cations 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 fi ve (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 returned 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 the best performance. This warranty does not cover 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, lifters, 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 M18 FUEL™ 1″ D-Handle High Torque Impact Wrenches, Drain Cleaning Cables, AIRSNAKE™ Drain Cleaning Air Gun Accessories, and REDLITHIUM™ USB Laser Levels 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™, M18 FUEL™ 1″ High Torque Impact Wrench w/ ONE-KEY™, M18 FUEL™ 2 Gal. Compact Quiet Compressor, M12™ Laser Levels, 165′ Laser Detector, M12™ 23GA Pin Nailer, and M18 FUEL™ 1/4″ Blind Rivet Tool w/ ONE-KEY™, and M12 FUEL™ Low-Speed Tire Buff er 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 EXCLUSION 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 products 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.

MILWAUKEE TOOL
13135 West Lisbon Road
Brookfi eld, WI 53005 USA
58142643d3
961016007-03(A)
Printed in Vietnam

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