3. Assembly and installation procedure HIRO 160 Q
16
The ends of the guide rails must be fitted together
without leaving any gap between them.
If necessary, maintain the tension between the
guide rails using a chain hoist or a screw clamp.
For joining the guide rail tubes together, M6 x 50
mm countersunk bolts with M6 nuts are supplied in
the enclosed accessory kit.
The sleeve and the guide rail tube have a pre-
drilled bolt hole but the bore must be enlarged and
countersunk.
In order to drive in the M6 bolt, the bore in the
guide rail tube must be enlarged to 5.2 mm. The
front of the tube must be countersunk so that the
bolt head will be flush with the outside tube
surface, and the bore enlarged to 6 mm. The rear
hole must be tapped with a M6 thread.
After cutting the rear M6 thread, secure the M6
bolt with a medium-strength thread-locking
compound and tighten the bolt. The bolt must be
secured with a M6 counter nut to prevent the bolt
from loosening.
After fixing the bolt head, grind it with an angle
grinder and an abrasive brush to leave a surface
that is flush with the guide rail tube.
