BGS technic 6682 Guia Del Usuario página 7

2. Alignment
The further procedures are determined by the broken point of the threaded bolt.
(See chapter 2a or 2b)
2a. The threaded bolt has broken below the sealing surface (in the female thread).
Align the last arm of the 3-arm drilling jig; for this purpose, align the
alignment pin (17) through the mounting bore (1) in the female
thread of the bolt to be drilled out.
Tighten the two hexagon nuts with the 13 mm spanner and the
central screw with the 5 mm internal hexagon key (20) to fix the
drilling jig to the component.
Continue with chapter "3 Setting the drill stop"
2b. The threaded bolt has broken above the sealing surface.
Align the last arm of the 3-arm drilling jig by using the M8 (10) or
M10 (11) alignment sleeve.
For this purpose, insert the matching alignment sleeve (10 or 11) into
the mounting bore and align the 3-arm drilling jig to the projecting
thread of the bolt to be drilled out.
Tighten the two hexagon nuts using a 13 mm spanner.
Tighten the central screw with 5 mm internal hexagon key (20).
Remove the alignment sleeve (10 or 11) from the mounting bore.
Continue with chapter "3 Setting the drill stop"
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