Installation Of The Thrust Tunnel - Vetus BOW410HM Manual De Manejo Y Instrucciones De Instalación

Corrosion of a steel or alu-
minium thrust tunnel can be
reduced by ensuring that
the tail piece is completely
insulated from the thrust-
tunnel.
NOTE: The gaskets sup-
plied are already electrically
insulated. However the bolts
and the shaft need to be fit-
ted with insulation material,
for example nylon bushes.
( ).
Installation
For installation examples see page 49.
For outside dimensions see page 51.

Installation of the thrust tunnel

Drill 2 holes into the ship's
hull, where the centerline of
the thrust tunnel will be, in
accordance with the diame-
ter of the marking tool.
Pass the marking tool
(home-made) through both
pre-drilled holes and set out
the outside diameter of the
thrust-tunnel to the hull.
Dependent on the vessel's
construction material, cut
out the holes by means of a
jigsaw or an oxy-acetylene
cutter.
Install the thrust-tunnel.
Operation manual and installation instructions Hydraulic bow thruster 410/ 550 kgf, ø 400 mm
Polyester thrust tunnel:
Resin: The resin used for the polyester thrust tunnel is
Isophtalic polyester resin (Norpol Pl 2857).
Pre-treatment: The outside of the tunnel must be rough-
ened.
Remove all of the top surface down to the glass-fibre. Use
a grinding disc for this.
Important: Treat the end of the tunnel, after it has been
sawn to length, treat the end of the tube with resin. This
will prevent water seeping in.
Laminating: Apply a coat of resin as the first coat. Lay on
a glass-fibre mat and impregnate with resin. Repeat this
procedure until you have built up a sufficient number of
layers.
A polyester thrust tunnel
should be finished as follows:
Roughen
resin/glass-fibre. Apply a top
coat of resin. Treat the side of
the tunnel which comes into
contact with water with 'epoxy
paint'
polyurethane paint.
Then apply anti-fouling treatment if required.
Drilling the holes in the thrust-tunnel
Use the drill pattern supplied,
to determine the correct posi-
tion of the holes to be drilled.
D = 420 mm
Important: The pattern of the
holes must be positioned pre-
cisely on the centerline of the
tunnel.
Drill the holes through the
thrust tunnel and take care
that the holes are free of
burrs.
the hardened
or 2-component
ENGLISH
= 154 x 59 mm
d = 22 mm
13
12.0202