Operation; Electric Brake - Milwaukee 6117-31 Operator's Manual

Installing/Removing Grinding Wheels
Make sure the wheel does not extend beyond the
bottom of the guard. Threaded hub grinding wheels
may require a deeper guard (see "Accessories").
1. Unplug the tool. WARNING! Always unplug tool
before changing or removing accessories.
2. Properly position the guard.
3. Wipe the flange, flange nut and spindle to remove
dust and debris. Inspect the parts for damage. Re-
place if needed. Use only MILWAUKEE mounting
hardware designed for your tool.
4. Place the flange on spindle, as shown.
Flange nut
Grinding
wheel
Flange
Spindle
5. Place the selected wheel on the spindle and align
it with the flange.
6. Position the flange nut over the spindle according
to wheel thickness.
Flange nut
position for
1/8" thick or less wheels
Flange nut
position for
1/4" thick or more wheels
7. Press in the spindle lock button while turning the
flange nut clockwise. Tighten securely.
8. To remove wheel, unplug the tool and reverse the
procedure.
Sanding Disc Selection
Use sanding discs and accessories that are:
• correct size as written on tool's nameplate.
• rated at or above the RPM listed on the tool's name-
plate.
• correct accessory, wheel type and grit for the job.
Select the correct type of sanding disc for your job.
Generally, use 24 or 36 grit for heavy stock removal;
50, 60, or 80 grit for medium stock removal and 120
grit for finishing. Always begin with a coarse grit, us-
ing successively finer grits to obtain the desired finish.
•Aluminum Oxide: For fast cutting, general purpose
discs for most metal jobs. Best for cold-rolled steel,
stainless steel or metals requiring tough, fast cutting,
long lasting abrasives.
•Aluminum Zirconia Bi-Cut: Unique grit pattern is
arranged in clusters for faster stock removal and
cleaning. Ideal for removing paint from cars, boats,
etc. without clogging.
•Ceramic: Lasts up to 3 times longer than Aluminum
Oxide Discs. For general metal working. Ideal for
tough jobs.
Installing Backing Pad and Sanding Discs
1. Unplug the tool. WARNING! Always unplug tool
before changing or removing accessories.
2. Wipe the accessories, disc nut and spindle to
remove dust and debris. Inspect the parts for dam-
age. Replace if needed. Use only MILWAUKEE
mounting hardware designed for your tool.
3. Slip backing pad onto spindle with flat side away
from gear case.
4. Place sanding disc on backing pad and secure
assembly to spindle with disc nut.
Disc nut
Sanding disc
Backing pad
Spindle
5. Press in the spindle lock button while turning disc
nut clockwise. Tighten securely.
6. To remove backing pad and sanding disc, unplug
the tool and reverse the procedure.
WARNING
1/8"
to comply with ANSI Z87.1.
When working in dusty situations, wear appro-
priate respiratory protection or use an OSHA
compliant dust extraction solution.
1/4"
The controlled start feature reduces the torque reac-
tion "jerk" when its trigger is pulled.
Constant Speed Tachometer
The constant speed tachometer keeps the tool's
revolutions per minute at an almost constant speed
even under load. The tachometer also helps pre-
vent tool overheating. The tool switches itself off
automatically when the motor is overloaded. If this
happens, release the trigger to reset. Pull the trigger
and continue work.
The electric brake engages when the trigger is re-
leased, causing the wheel to stop and allowing you
to proceed with your work. Generally, the wheel stops
within six seconds. However, there may be a delay
between the time you release the trigger and when
the brake engages. Occasionally the brake may miss
completely. If the brake misses frequently, the tool
needs servicing by an authorized MILWAUKEE ser-
vice facility. Make sure the tool comes to a complete
stop before laying it down.
7

OPERATION

To reduce the risk of injury, always
wear proper eye protection marked
Controlled Start
(some models)
(some models)

Electric Brake

(some models)