4
5
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.
5. Insert the cartridge,
open end first, 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"
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 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
fi
ttings.
Excessive pressure can be caused by high pres-
sure loader
fi
ttings.
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
fi
tting into the grease gun loader
coupler.
CAUTION
To avoid damage to the grease gun
and pump, the loader
fi
tting 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 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 o
ff
, press the LED button or
pull the trigger. The LED will go o
ff
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 speci
fi
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
Con
fi
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. Al-
ways 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 su
ffi
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...
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
speci
fi
ed for the battery. For spe-
ci
fi
c 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 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 speci
fi
cally
recommended for this tool. Others
may be hazardous.
Installing the Clear Barrel
(Accessory Cat. No. 49-16-2646)
A clear grease barrel is o
ff
ered to replace the pro-
vided 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 squeezing
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.
OPERATION
WARNING
Always remove battery pack before
changing or removing accesso-
ries. Only use accessories speci
fi
cally recom-
mended 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 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).
4. Remove the bolt from below the hose assembly.
5. Pull trigger for 15 seconds to clear the contamina-
tion.
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 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 a
ff
ect 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 prop-
erly, return the tool, charger and battery pack, to a
MILWAUKEE service facility for repairs.
WARNING
To reduce the risk of personal in-
jury and damage, never immerse
your tool, battery pack or charger in liquid or
allow a liquid to
fl
ow inside them.
Cleaning
Clean dust and debris from any vents. Keep tool
clean, dry and free of oil or grease. Use only mild
soap and a damp cloth to clean, since certain clean-
ing 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 deter-
gents containing ammonia. Never use
fl
ammable 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 accesso-
ries. Others may be hazardous.
For a complete listing of accessories, go online to
www.milwaukeetool.com or contact a distributor.
