Dewalt DW831 Instructional Manual

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English

Fitting Guard



CAUTION: Do not operate grinder with a loose guard

or the guard latch in the openposition.

1. Place the angle grinder on a table, spindleup.

2. Press the guarddown.

3. Position the guard between your body and the

workpiece.

4. Tighten the screw holding the cinch collar firmly around

the neck of thespindle.

Fig. D

Removing Guard

1. Loosen the screw holding the cinch collar around the

neck of thespindle.

2. Lift up on theguard.



CAUTION: Do not tighten adjusting screw with guard

latch in open position. Undetectable damage to the

guard or the mounting hub mayresult.



CAUTION: Edge grinding can be performed with

Type 27 wheels designed and specified for this

purpose; 1/4" (6.35 mm) thick wheels are designed for

surface grinding while thinner Type 27 wheels need

to be examined for the manufacturer's label to see

if they can be used for surface grinding or only edge

grinding/cutting. Wheels where surface grinding is not

permitted cannot be used with thisgrinder.

Flanges and Wheels



CAUTION: Turn unit off and unplug the tool before

making any adjustments or removing or installing

attachments oraccessories.

Mounting Non-Hubbed Wheels (Fig. E, F)



WARNING: Failure to properly seat the flanges and/or

wheel could result in serious injury (or damage to the

tool orwheel).



CAUTION: Included flanges must be used with

depressed center Type 27/42 grinding wheels and

Type1/41 cutting wheels. See the Accessories Chart

for moreinformation.



WARNING: A closed, two-sided cutting wheel guard

is required when using abrasive cutting wheels or

diamond coated cutting wheels.



WARNING: Use of a damaged flange or guard or fail-

ure to use proper flange and guard can re sult in injury

due to wheel breakage and wheel contact. See the

Accessories Chart for moreinformation.

1. Place the tool on a table, guardup.

2. Install the unthreaded backing flange

3

, on spindle

1

with the raised center (pilot) facing the wheel.

3. Place wheel

13

against the backing flange,

centering the wheel on the raised center (pilot) of the

backingflange.

4. While depressing the spindle lock button thread the

threaded locking flange

4

on spindle.

nOTE: If the wheel you are installing is more than 1/8"

(3.17mm) thick, place the threaded locking flange on

the spindle so that the raised section (pilot) fits into the

center of the wheel. If the wheel you are installing is

1/8" (3.17mm) thick or less, place the threaded locking

flange on the spindle so that the raised section (pilot) is

not against thewheel.

Fig. E

Over 1/8" (3.17mm)

wheels

Backing Flange

Locking flange

1/8" Or less (3.17mm)

wheels

Backing Flange

Locking flange

5. While depressing the spindle lock button, tighten the

threaded locking flange

4

a. Tighten the threaded locking flange using a

wrench

14

b. Tighten a keyless locking flange by hand. (Only use a

keyless locking flange if it is in perfect condition.)

6. To remove the wheel, depress the spindle lock button

and loosen the threaded lockingflange.

Fig. F

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Dewalt DW831 5 in. 125mm Medium Angle Grinder

Instructional Manual - Page 9