Hilti NURON AG 4S-22-125, Manual, Page: 21 / 300

*2251374*
2251374 English 15
1. Clean the clamping flange and the clamping nut.
2. Check that the O-ring is in place in the clamping flange and that it is undamaged.
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Replace the O-ring if it is missing or damaged.
3. Fit the clamping flange on to the spindle (keyed fit to prevent slipping and rotation).
4. Fit the accessory tool.
5. Screw on the clamping nut corresponding to the type of accessory tool fitted.
6. Press the spindle lock button and hold it in this position.
7. 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.
1. Press the spindle lock button and hold it in this position.
2. Release the clamping nut by gripping it with the wrench and turning the nut counterclockwise.
3. Release the spindle lock button and remove the accessory tool.
6.9.3 Installing Kwik lock 10
WARNING
Risk of breakage. Heavy wear (abrasion) may cause the Kwik lock nut to break.
▶
When working with the power tool, make sure that the Kwik lock nut doesn’t come into contact with the
working surface.
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Do not use a damaged Kwik lock nut.
The optional Kwik lock nut can be used instead of the standard clamping nut. Accessory tools (wheels
etc.) can then be changed without need for additional tools (keyless system).
1. Clean the clamping flange and the clamping nut.
2. Check that the O-ring is in place in the clamping flange and that it is undamaged.
▶
Replace the O-ring if it is missing or damaged.
3. Fit the clamping flange on to the spindle (keyed fit to prevent slipping and rotation).
4. Fit the accessory tool.
5. Screw on the Kwik lock nut until it is seated against the accessory tool.
▶
The name Kwik lock should be visible when the nut is screwed on.
6. Press and hold down the spindle lock button.
7. Firmly turn the accessory tool by hand clockwise until the Kwik lock nut is tight.
8. Release the spindle lock button.
6.9.4 Removing Kwik lock
If the Kwik lock quick-release lock nut cannot be released by turning it by hand, use a pin wrench to
turn the nut counter-clockwise. Never use a pipe wrench or an adjustable wrench of any kind. Use of
the wrong tool can damage the Kwik lock quick-release lock nut.
1. Press the spindle lock button.
2. Release the Kwik lock nut by turning it counterclockwise by hand.
3. Release the spindle lock button and remove the accessory tool.
6.9.5 Fitting the core bit 11
1. Fit the side handle. → page 13
2. Install the standard guard.
3. Place the core bit in position and tighten it hand-tight.
4. Press the spindle lock button and hold it in this position.
5. Tighten the core bit with a suitable open-end wrench.