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Maintenance
WARNING
Danger of electric shock! Improper repairs to electrical components may lead to serious injuries including
burns.
▶ Repairs to the electrical section of the tool or appliance may be carried out only by trained electrical
specialists.
•
Check all visible parts and controls for signs of damage at regular intervals and make sure that they all
function correctly.
•
Do not operate the product if signs of damage are found or if parts malfunction. Have it repaired
immediately by Hilti Service.
•
After cleaning and maintenance, fit all guards or protective devices and check that they function correctly.
To help ensure safe and reliable operation, use only genuine Hilti spare parts and consumables. Spare
parts, consumables and accessories approved by Hilti for use with the product can be found at your
local Hilti Store or online at: www.hilti.group.
6.1
Backing pad
▶ Check the backing pad for wear and foreign matter. Wear or foreign matter on the backing pad reduces
the adhesion of the sanding pad to the backing pad. Clean or replace the backing pad, as applicable. A
damaged backing pad has to be replaced immediately.
6.1.1
Changing the backing pad
1. Disconnect the supply cord plug from the power outlet.
2. Stand the product on the flats of the guide grip, so that the abrasive side of the sanding pad is visible.
3. Remove the sanding pad.
4. Use a suitable tool to release the three securing screws.
5. Remove the backing pad.
6. Clean and check the backing pad brake.
▶ If necessary, replace the backing pad brake.
7. Place the new backing pad in position.
8. Hold the backing pad and tighten the three securing screws.
9. Check that the backing pad is installed correctly and not tilted.
10. Using the positioning guide to reinstall the sanding pad.
6.2
Backing pad brake
▶ A steady increase in idling speed over time is indicative of wear of the brake ring of the backing pad
brake. Change the brake ring.
6.2.1
Changing the brake ring of the backing pad brake
1. Disconnect the supply cord plug from the power outlet.
2. Remove the backing pad.
3. Remove the old brake ring from its seat on the power-tool housing.
4. Press the new brake ring into the recesses so that the four housing screws are correctly aligned. Make
sure that the snap hooks engage.
5. Install the backing pad.
7
Transport and storage
•
Do not transport electric tools with accessory tools fitted.
•
Always unplug the supply cord before storing an electric tool or appliance.
•
Store tools and appliances in a dry place where they cannot be accessed by children or unauthorized
persons.
•
Check electric tools or appliances for damage after long periods of transport or storage.
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