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HDE 17.03.21
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8.1.3.
Installation of the expansion sleeve: The expansion
sleeves must be inserted into the drill hole required for
your individual gradient (see point 5).
Make sure that the gradient matches your storey
height. Your required gradient can be found in the
storey height table in section 9 or in the Häfele
catalogue.
8.1.4.
Press the expansion sleeves into the drill hole required for your gradient and tap them in with a hammer. The sockets
must be flush with the wood surface.
8.1.5.
The stair stringer elements are already pre-soaped.
To facilitate installation, soap the positive shape of the
dovetail joint (male part) on both sides as well as the
front side again with the soap.
en
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