Particularly with very high-quality paving blocks and slabs, it can happen after vibration that individual blocks with minor damage have to be replaced.
If conventional block extractors are used, with blades that grip into the joint, damage to the neighbouring blocks can occur.
a. The defective block is drilled centrally with the battery-powered hammer drill.
The concrete screw is screwed in with the battery screwdriver until the head still protrudes by approx. 10 – 15 mm (¼ – ½ inch).
b. The SZH grips under the screw head.
c. The impact weight is pulled upwards with two hands (see arrow in diagram).
After a few strokes, the defective block can be removed.