Bosch GWS18V-8B15 Operating/Safety Instructions Manual page 14

Lock Nut and Backing Flange
Your tool is equipped with a threaded spindle for
mounting ac ces sories. Always use the supplied original
BOSCH lock nut, and backing flange, that has the same
thread size as the spindle. Backing flange is keyed to
output shaft (Fig. 4). Always make sure that the lock nut
is tightened correctly with the supplied wrench.
Disc Grinding Wheel Assembly
1. Disconnect battery pack from tool.
2. Be sure that wheel guard is in place for grinding.
3. Place BACKING FLANGE and GRINDING WHEEL on
the spindle.
4. Thread on the lock nut and tighten nut using the lock
nut wrench, while holding the spindle lock. (Fig. 4).
TO REMOVE: Reverse procedure.
WHEN USING SPIN-ON WHEELS
1. Disconnect battery pack from tool.
2. Be sure that wheel guard is in place for grinding.
3. Thread wheel directly onto spindle without using the
supplied flanges.
TO REMOVE: Reverse procedure.
All parts of a spin-on wheel must be within lip of grinding
guard (Fig. 5). If spin-on wheel is past lip of guard, do
not use that wheel as it does not fit on this grinder.
Do not use accessories that
run eccentrically. The tool will
vibrate excessively and may cause loss of control and the
accessory may burst.
Assembly
Fig. 4
Spindle
Lock Nut
Type 27
Grinding
Wheel
Lock Nut
FIG. 5
Lip of
Guard
-14-
Type 27
Wheel
Guard
Backing
Flange
Type 27
Grinding
Wheel
Spindle
Backing
Flange
Spin-On
Wheel