MAX Power HYD325_325 Hydraulic Tunnel Thruster - Manual (Page 4)

MANUAL SUPER POWER Series 325 HYD Model 325 01/05/2004
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CAUTION: Do not fibre glass the area of the motor support.
It is recommended to lightly sand down the area where the motor support is fitted.
On the outside, when the ISOPHTALIQUE RESIN has set, finish with an application of resin and
material, followed with an additional coat on the hull, in the tunnel area.
To optimise the flow of water while sailing, deflectors & a relief should be fashioned.
These can be made up with several coats of reinforced filler in order to obtain the required
hydrodynamic lines.
Once all fibreglass work is complete, apply a coat of epoxy or gel-coat to waterproof the entire
area.
3) PROPELLER DRIVE LEG & MOTOR SUPPORT
The leg’s gasket and the motor‘s support can be used to mark up the drilling position, in some
cases it might be easier, to mark out the position, and drill before the stratification of the
tunnel.
Centre and trace the drilling positions for the leg and its support.
Fit the leg along with the gasket, in the tunnel.
Check general positioning of the propellers.
Small pieces of folded cardboard can be used to check the spacing between the propeller tips
and the tunnel is even all round. Slight adjustment to align the leg in its tunnel may be
necessary.
After checks, remove leg etc; remount the assembly, covering the gasket with an oil and salt
water resistant jointing compound. After fitting, remove all excess compound.
The gasket must be between the leg and the tunnel, and not between the motor support and
the tunnel.
Care must be taken at all times when fitting the leg into the motor support to ensure that the
mating components are dirt free and covered with a light film of grease.
IMPORTANT: GRAPHITE GREASE MUST NOT BE USED.
Torque values: screw Ø 12 mm = 80 Nm screw; tighten the two fixing screws alternately.
Once tightened, ensure that the propeller/s turn freely without touching the tunnel.