DeWalt DWE4557G Instruction Manual page 15

nOTE: Adjust the guard skirt so that only 1/8" of the wheel
is exposed by loosening the bolts, allowing the guard to
lengthen. Tighten the guard skirt bolts securely before using
the grinder.
Using a Flaring Cup Wheel (Fig. S)
Flaring cup wheels are designed for heavy material removal.
1. Allow the tool to reach full speed before touching tool
to work surface.
2. Apply minimum pressure to work surface, allowing the
tool to oper ate at high speed.
3. Maintain a 5˚ to 10˚ angle between the tool and the
work surface.
Fig. S
4. Continuously move the tool in a forward and back
motion to avoid creating gouges in the work surface.
5. Remove the tool from work surface before turning
tool off. Allow the tool to stop rotating before setting
it down.
Mounting and Using Cutting
(Type 1) Wheels (Fig. T, U)
Cutting wheels include diamond wheels and abrasive discs.
Abrasive cutting wheels for metal and concrete use are
available. Diamond blades for concrete cutting can also
be used.

WARNING: A closed, two-sided cutting wheel guard
is re quired when using cutting wheels. Fail ure to use
proper flange and guard can re sult in injury resulting
from wheel breakage and wheel contact. Refer to the
Accessories Chart for more information.
Mounting Closed (Type 1) guard
1. Open the guard latch 13
the guard with the slots on the hub
the lugs with slots on the gear case cover. Position the
guard facing backward.
Fig. T
14
13
15
2. Push the guard down until the guard lug engages and
rotates freely in the groove on the gear case hub.
3. Rotate guard 6 into desired working position.
The guard body should be positioned between
the spindle and the operator to provide maximum
operator protection.
–
5˚ 10˚
, and align the lugs 14 on
. This will align
15
6
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. Do not
operate grinder with a loose guard or with the guard
latch in open position.
5. To remove the guard, follow the procedure above in
reverse order.
nOTE: The guard is pre-adjusted to the dia met er of the gear
case hub at the factory. If, after a period of time, the guard
becomes loose, tighten the adjusting screw
guard latch in the closed position with guard installed on
the tool.
Fig. U
NOTICE: To reduce the risk of damage to the tool, do
not tighten adjusting screw with guard latch in open
position. Undetectable damage to guard or mounting
hub may result.
Mounting Cutting Wheels (Fig. V)

CAUTION: Matching diameter backing flange and
clamp nut (included with tool) must be used for
cutting wheels.
1. Remove soft mount 7 .
2. Install wheel backing flange, aligning flats on spindle
22 with flats on backing flange
3. Place the wheel on the backing flange, centering the
wheel on the backing flange pilot.
4. Install the clamp nut, ensuring that the wheel remains
centered on the backing flange.
5. Depress the spindle lock button and tighten clamp nut
with wrench.
6. Reverse the above procedure to remove the wheel.
Fig. V
7
17
Using Cutting Wheels

WARNING: Do not use edge grinding/cutting wheels
for surface grinding applications because these wheels
are not designed for side pressures encountered
with surface grinding. Wheel breakage and injury
may result.
English
16 with the
16
17 .
22
13