Hilti NURON AG 4S-22-100, Original Operating Instructions, Page: 20 / 92

14 English 2252235
*2252235*
4. Secure the guard by closing the clamping lever.
The guard is preset to the correct clamping diameter by the adjusting screw. If tension is too low
when the guard is fitted, the adjusting screw can be tightened slightly to increase the clamping force.
6.7.2 Adjusting standard guard 6
1. Open the clamping lever.
2. Turn the guard to the required position.
3. Secure the guard by closing the clamping lever.
6.7.3 Removing standard guard
1. Open the clamping lever.
2. Rotate the guard until the keyed locating lug is aligned with the keyed locating groove and then remove
the guard.
6.8 Fitting or removing the front cover 7
The front cover must be in position on the standard guard.
1. Position the front cover, with the closed side facing up, on the standard guard.
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The lock must engage with an audible click.
2. To remove, open the lock of the front cover.
3. Remove the front cover from the standard guard.
6.9 Fitting and removing accessory tools
CAUTION
Risk of injury. The accessory tool may be hot.
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Wear protective gloves when changing the accessory tool.
Diamond wheels must be replaced when their cutting or grinding performance drops significantly. This
generally is the case when the segments reach a height of less than 2 mm.
Other wheels must be replaced when their cutting performance drops significantly or other parts of
the angle grinder (not the wheel) come into contact with the material you are working on.
Abrasive wheels must be replaced when their expiry date has been reached.
6.9.1 Installing accessory tool 8
WARNING
Risk of injury. The accessory tool may work loose due to the braking effect of the motor.
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Wait until the accessory tool has come to a standstill before touching or gripping the accessory tool or
the clamping nut.
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Secure the accessory tool by tightening the clamping flange and clamping nut firmly so that no parts
work loose from the spindle due to the braking effect of the motor.
1. Fit the clamping flange on to the drive spindle.
2. Fit the accessory tool.
3. Screw on the clamping nut corresponding to the type of accessory tool fitted.
4. Press the spindle lock button and hold it in this position.
5. Use the pin wrench to tighten the clamping nut securely, then release the spindle lock button and remove
the wrench.
6.9.2 Removing the accessory tool
WARNING
Risk of breakage and irreparable damage. If the spindle lockbutton is pressed while the spindle is
rotating, the accessory tool can detach from the power tool.
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Press the spindle lockbutton only when the spindle has stopped rotating.