Hilti AG 125-A22 Mode D'emploi page 32

6.7.3 Fitting and removing the front cover 9
NOTE
If you use the front cover, fit it by pushing it onto the
guard.
1. Press the front cover onto the standard guard, with
the closed side positioned as shown in the illustra-
tion, until it engages.
en
2. To remove the front cover, release the catch and
then pull the front cover away from the standard
guard.
6.8 Fitting and removing the disc 10 12
WARNING
If the nut securing the disc and flange is not tightened
firmly, the disc may work loose from the spindle due
to the braking effect of the motor. Tighten the disc
/ flange securing nut in accordance with the directions
given in the operating instructions. Wait until the disc
comes to a standstill.
DANGER
Check that the speed rating printed on the cutting
or grinding disc is equal to or higher than the rated
speed of the power tool (see accessories).
DANGER
Check the condition of the grinding disc before using
it. Do not use accessories (e.g. discs) that are broken,
cracked or damaged in any way.
NOTE
Diamond discs must be replaced when the cutting or
grinding performance drops significantly. This generally
is the case when the segments reach a height of less
than 2 mm. Other discs must be replaced when the
cutting performance drops significantly or other parts of
the angle grinder (not the disc) come into contact with
the material you are working on. Abrasive discs generally
have to be replaced when the durability date has been
reached.
1. Pull the battery out of the tool.
2. CAUTION The clamping flange is equipped with an
O-ring. The O-ring must be replaced if missing or
damaged.
Fit the clamping flange onto the drive spindle (keyed
fit to prevent slipping/rotation).
3. Fit the insert tool.
4. Screw on the clamping nut corresponding to the
type of disc fitted 12.
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5.
6.
7.
6.9 Fitting and removing the insert tool using the
NOTE
The Kwik-Lock nut may be used instead of the standard
clamping nut. No tools are then required for changing
insert tools.
CAUTION
When operating the power tool, take care to ensure
that the Kwik-Lock nut does not come into contact
with the work surface. Do not use a damaged Kwik-
Lock nut.
NOTE
The arrow on the upper surface of the nut must be within
the index marks. If the arrow is not within the index marks
when the nut is tightened it will be impossible to release
the nut by hand. In this case, use the pin wrench to
release the Kwik-Lock nut (do not use a pipe wrench!).
1.
2.
3.
4.
5.
6.
7.
8.
CAUTION Do not press the spindle lockbutton
before the drive spindle has stopped rotating.
Press the spindle lockbutton and hold it in this
position.
Use the wrench to tighten the clamping nut securely
and then release the spindle lockbutton.
To remove the disc from the power tool, follow the
instructions for fitting the disc but carry out the steps
in the reverse order.
Kwik-Lock quick-release nut 13
Pull the battery out of the power tool.
Clean the clamping flange and the quick-release
clamping nut.
CAUTION The clamping flange is equipped with an
O-ring. The O-ring must be replaced if missing or
damaged.
Fit the clamping flange onto the drive spindle.
Fit the insert tool.
Screw the Kwik-Lock nut onto the spindle until it
contacts the insert tool (the side with the lettering
should be visible after the nut is screwed on).
CAUTION Do not press the spindle lockbutton
before the drive spindle has stopped rotating.
Press the spindle lockbutton and hold it in this
position.
Use the wrench to tighten the clamping nut or,
respectively, rotate the insert tool firmly by hand in a
clockwise direction until the Kwik‑Lock nut is tight,
and then release the spindle lockbutton.
To remove the disc from the power tool, follow the
instructions for fitting the disc but carry out the steps
in the reverse order.