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6
Drilling the holes in the thrust-tunnel
Mark the installation position of the bow
thruster by means of the intermediate
flange.
Use the drill pattern supplied, to determine
the correct position of the holes to be drilled.
Important: The pattern of the holes must be
positioned precisely on the centerline of the
tunnel.
Consult the template for the dimensions of
the holes to be drilled.
Drill the holes through the thrust tunnel and
take care that the holes are free of burrs.
7
Protection of the bow thruster against corrosion
To prevent corrosion problems, do not use copper based anti-fouling. Cathodic
protection is a 'must' for the protection of all metal parts under water.
In order to protect the bow thruster tailpiece against corrosion, the tailpiece is
supplied with a zinc anode.
Corrosion of a steel or aluminium thrust
tunnel can be reduced by ensuring that the
tail piece is completely insulated from the
thrust-tunnel.
NOTE: The gaskets supplied are already elec-
trically insulated. However the bolts and the
shaft need to be fitted with insulation mate-
rial, for example nylon bushes.
vetus® Installation recommendations for thrusters
22 (
7
/
") 22 (
7
/
")
8
8
ø 30 (1
3
/
")
16
ø 9 (
3
/
")
8
ø 9 (
3
/
")
8
ø 9
(
3
/
")
8
37 (1
29
/
")
77 (3
1
/
")
64
32
ENGLISH
Insulation bush
Gasket
Insulation bush
Insulation bush
17
020571.03
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