Milwaukee M18 2646-20 User manual

M18™ CORDLESS GREASE GUN
Cat. No.
2646-20
OPERATOR'S MANUAL
TO REDUCE THE RISK OF INJURY, USER MUST READ AND UNDERSTAND
OPERATOR'S MANUAL.

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•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 fl ame or heat source. Follow all
warnings and instructions from grease and lubri-
cant manufacturer.
•Maintain labels and nameplates. These carry
important information. If unreadable or missing,
contact a MILWAUKEE service facility for a free
replacement.
FUNCTIONAL DESCRIPTION
•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 fi lter out microscopic particles.
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
Volts
Direct Current
psi Pounds per Square Inch
Underwriters Laboratories, Inc.
United States and Canada
SYMBOLOGY
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PERSONAL SAFETY
GENERAL POWER TOOL SAFETY WARNINGS
WORK AREA SAFETY
ELECTRICAL SAFETY
•Keep work area clean and well lit. Cluttered or
dark areas invite accidents.
•Do not operate power tools in explosive at-
mospheres, such as in the presence of flam-
mable 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.
•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 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 wetcondi-
tions. 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 residual current device
(RCD) protected supply. Use of an RCD reduces
the risk of electric shock.
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
jewellery. Keep your hair, clothing and gloves
away from moving parts. Loose clothes, jewel-
lery 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.
WARNING READ ALL SAFETY WARNINGS AND ALL INSTRUCTIONS.
Failure to follow the warnings and instructions 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.
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 thepowertooliftheswitchdoesnot
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 the battery pack 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 chil-
dren 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. 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,
takingintoaccounttheworkingconditionsand
the work to be performed. Use of the power tool
for operations different from those intended could
result in a hazardous situation.
•Stay alert, watch what you are doing and use
common sensewhen operatinga powertool. Do
not usea power toolwhile youare tired orunder
theinfluenceof 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 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 fi nger on the switch or energising 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
•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 fi re
when used with another battery pack.
•Use power tools only with specifically desig-
nated battery packs. Use of any other battery
packs may create a risk of injury and fi re.
BATTERY TOOL USEAND CARE
SPECIFIC SAFETY RULES
•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 termi-
nals together may cause burns or a fi re.
•Under abusive conditions, liquid may be eject-
ed 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. 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.
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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).
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.
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
fl ow rate, high pressure. Push the speed control
switch to display "2" for high fl ow rate, low pressure.
Troubleshooting
Unable to pull
back rod
Press the bleeder to release
pressure
Unable to push
rod forward
Rotate rod 90° to disengage it
from plunger
No grease when
trigger is pulled
Barrel is empty, add grease
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
Confi rm that Counter dial is set
to "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 suffi cient 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 trigger for 15 seconds to clear the contami-
nation.
6. If a spring or ball are
expelled, wipe away
any contamination and
re-insert, as shown.
7. Reattach the bolt and
tighten securely.
8. Pull trigger for 30 sec-
onds.
9. Reattach the hose as-
sembly and begin us-
ing the tool.
Bulk Grease Loading
Bulk grease can be loaded 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 sur-
face 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 bar-
rel 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"
ASSEMBLY
Inserting/Removing the Battery
To remove the battery, push in the release buttons
and pull the battery pack away from the tool.
To insert the battery, slide the pack into the body of
the tool. Make sure it latches securely into place.
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 rod from the back of the
steel barrel.
3. Remove the spacer screw with a phillips screw-
driver, and remove the plastic spacer by squeez-
ing the two retention tabs and pulling away from
the tool.
4. Screw the back cap with rod onto the clear barrel.
5. Screw the clear barrel into tool.
Fuel Gauge
To determine the amount of charge left in the bat-
tery, 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 fl ash 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).
OPERATION
WARNING To reduce the risk of injury,
wear safety goggles or glasses with side
shields.
WARNING Always remove battery
pack before changing or removing acces-
sories. Only use accessories specifically
recommended for this tool. Others may be
hazardous.
WARNING Recharge only with the
charger specified for the battery. For specific
charging instructions, read the operator’s
manualsuppliedwithyourcharger andbattery.
WARNING To reduce the risk of injury,
use only low pressure loader fittings. Exces-
sive pressure can be caused by high pressure
loader fittings.
Cat. No. Volts DC Max. Operating Pressure Flow Rate Barrel Capacity Hose Rating
2646-20 18 1 - 10,000 PSI (690 bar)
2 - 5,000 PSI (345 bar) 1 - 3.5 oz./min 2 - 10 oz./min
16 oz Bulk
14.5 oz Cartridge
10,000 psi
(690 bar)
SPECIFICATIONS
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 not appear, repeat from step 2.
NOTE: This tool has been tested to factory stan-
dards, which results in a small amount of grease be-
ing 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.
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 re-
move the barrel.
4. Remove the cap
from the cartridge.
5. Insert the cartridge,
open end fi rst, into
the barrel.
6. Remove the seal
from the cartridge.
7. Screw the barrel
into the grease gun.
8. Release the rod
from the retaining slot and press it completely
into the barrel.
9. Prime the grease gun according to "Priming the
Grease Gun"

ACCESSORIES
WARNINGAlwaysremovebattery pack
before changing or removing accessories.
Onlyuseaccessoriesspecificallyrecommend-
ed for this tool. Others may be hazardous.
Cleaning
Clean dust and debris from charger and tool vents.
Keep tool handles clean, dry and free of oil or
grease. Use only mild soap and a damp cloth to
clean the tool, battery pack and charger 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 house-
hold detergents containing ammonia. Never use
fl ammable or combustible solvents around tools.
Repairs
For repairs, return the tool, battery pack and char-
ger to the nearest service center.
WARNING To reduce the risk of per-
sonal injury and damage, never immerse your
tool, battery pack or charger in liquid or allow
a liquid to flow inside them.
Maintaining Tool
Keep your tool, battery pack and charger in good re-
pair by adopting a regular maintenance program.
After six months to one year, depending on use,
return the tool, battery pack and charger to a
MILWAUKEE service facility for:
• Lubrication
• Mechanical inspection and cleaning (gears,
spindles, bearings, housing, etc.)
• Electrical inspection (battery pack, charger, motor)
• Testing to assure proper mechanical and
electrical operation
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.
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 disas-
semble the tool, battery pack or charger.
Contact a MILWAUKEE service facility for
ALL repairs.
Rely only on high-grade power tools offered on our virtual shelves.