Maintenance - DeWalt D28106 Instruction Manual

1. Open the guard latch (M). Align the lugs
(N) on the guard with the slots (O) on
the gear case.
2. Push the guard down until the guard lug
engages and rotates freely in the groove
on the gear case hub.
3. Rotate guard (I) into desired working
position. The guard body should be
positioned between the spindle and the
operator to provide maximum operator protection.
4. Close the guard latch to secure the guard on the
gear case cover. You should be unable to rotate
the guard by hand when the latch is in closed
position. If rotation is possible, tighten the adjust-
ing screw (P) with clamp lever in the closed
position. Do not operate grinder with a loose
guard or clamp lever in open position.
5. To remove the guard, open the guard latch, rotate the guard so that the arrows
are aligned and pull up on the guard.
NOTE: If, after a period of time, the guard becomes
loose, tighten the adjusting screw (P) with the
clamp lever in the closed position.
CAUTION: Do not tighten adjusting screw with
clamp lever in open position. Undetectable damage
to guard or mounting hub may result.
MOUNTING CUTTING WHEELS
CAUTION: Turn off and unplug the tool before making any adjustments or
removing or installing attachments or accessories. Before reconnecting the tool,
turn the switch on and off as previously described to ensure that the tool is off.
CAUTION: Matching diameter threaded backing flange and clamp nut (included
with tool) must be used for cutting wheels.
1. Place the unthreaded backing flange on spindle with the raised section (pilot)
facing up. The raised section (pilot) on the backing flange will be against the
wheel when the wheel is installed.
2. Place the wheel on the backing flange, centering the wheel on the raised sec-
tion (pilot).
O
N
M
I
P
11
3. Install the threaded clamp nut with the raised section (pilot) facing away from
the wheel.
4. Depress the spindle lock button and tighten clamp nut with a wrench.
5. To remove the wheel, grasp and turn while depressing the spindle lock button.
USING CUTTING WHEELS
WARNING: Do not use edge grinding/ cutting
wheels for surface grinding applications because these
wheels are not designed for side pressures encoun-
tered with surface grinding. Wheel breakage and injury
may result.
1. Allow tool to reach full speed before touching
tool to work surface.
2. Apply minimum pressure to work surface, allow-
ing tool to operate at high speed. Cutting rate is
greatest when the tool operates at high speed.
3. Once a cut is begun and a notch is established in
the workpiece, do not change the angle of the
cut. Changing the angle will cause the wheel to
bend and may cause wheel breakage.
4. Remove the tool from work surface before turning tool off. Allow the tool to stop
rotating before setting it down.

MAINTENANCE

Cleaning
WARNING: Blowing dust and grit out of motor and switch actuator using clean, dry
compressed air is a necessary regular maintenance procedure. Dust and grit contain-
ing metal particles often accumulate on interior surfaces and could create an electri-
cal shock or electrocution if not frequently cleaned out. It is recommended that a
ground fault circuit interrupter (GFCI) is utilized to further protect the user from elec-
tric shock resulting from the accumulation of conductive particles. If the tool is deac-
tivated by the GFCI, unplug the tool and check and clean the tool before resetting the
GFCI. ALWAYS WEAR SAFETY GLASSES when cleaning or using this tool.
CAUTION: Never use solvents or other harsh chemicals for cleaning the non-metallic
parts of the tool. Use a clean, dry cloth only.