Volvo Penta QL Instrucciones De Usuario página 10

Locate the lower edge of the template flush to the boat
bottom, however no part of the template must overlap the
transom profile. See fig. 13.
Fig. 13
Once you have reached the desired position of the temp-
late, keep it firm and steady and mark the pilot holes to
the transom by means of a marking pencil. Remove the
template and check that the pilot holes are all clearly vi-
sible. Re-check that no obstacle on the inside of transom
will interfere with the installation nor be damaged by the
drilling, before continuing the installation. See fig. 12.
Start to drill the hole (center hole) for the interceptor
grommet. Use a drill with diameter smaller than the cen-
ter drill of the hole cutter that you will use for the final
hole diameter of 32 mm.
Machine the 32 mm hole through transom, using a
high quality hole cutter. Note! Only use a hole cutter of
32 mm, no other diameters of the tool is accepted. Note!
Machine the hole perpendicular to the transom surface
(vertically as well as horizontally), see fig. 14 and 15.
Note! To check whether the tool you are going to use re-
ally will end up in the correct hole diameter, make a test
hole in a piece of wood and check the diameter.
90°
Fig. 14
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If the transom thickness makes it impossible to reach
through with the hole cutter, a hole connection from insi-
de will be necessary to prepare. Note! Be sure that the
edge of the 32 mm center hole is not damaged when
preparing the through-hull. If the hole is damaged, the
grommet will not fit in a proper way, which may result in
insufficient sealing. The diameter of hole must permit
the the 4-pole plug to pass through. Approx. diameter
25 mm is required, see fig 15.
90°
min. 90 mm
90°
min. 90 mm
Fig. 15
Note! Different boats may have different transom cons-
tructions, and in case the transom material being used,
is specially sensitive to water and moisture intrusion, it's
advisable that the transom through hole surface is trea-
ted with a water resistant topcoat before the installation
is continued. Moisture and damp may occur from inside
of the transom, due to high bilge water level or to air tem-
perature variances. Be sure that the hole diameter will
not be too tight for the installation of the grommet, due to
thick coating.