4
4.2 – ROTATIONAL (TWIST) MISALIGNMENT
If the outer circumference of the flanges are in alignment but the operator is
unable to fit the bolt into any two corresponding bolt-holes then rotational
misalignment may have occurred.
In this case the alignment tool can be attached to the most accessible point as
misalignment occurs at all bolt-holes to the same degree.
1)
Attach the alignment tool at the most
accessible/convenient point (as shown in section 5.3) and
use it to push the flanges out of alignment until one pair
of bolt-holes becomes parallel.
2)
Insert the bolt into the aligned bolt- hole and release the
alignment tool. The load will transfer onto the bolt.
3)
Repeat steps 1 and 2 at other points around the flange
until all of the remaining bolt-holes are parallel and
the rest of the bolts can be inserted.
