14
2933
4
2019
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SH 240 & SH 320
Hatch Installation
EN
1. Fit custom made pin bolts to the tunnel rings. The ends of the bolts must be sharp in order to create marks in the hatch. The pin bolts must be in
correct height so the hatch will fi t in its inner position.
2. Place hatch in its inner position, then press or tap with a hammer to create punch marks inside of the hatch.
3. drill 4 marked holes and countersink the outer hull side. (NB: drill holes 90 to the hatch surface.)
4. Temporary fi t the hatch to the tunnel rings. Ensure the bolts do NOT confl ict with the propeller tunnel. (NB: Bolts can be cut, depending on hull
thickness.)
fi ll the gap between hatch and hull edges.
5. Apply a layer of aluminium or duct tape on hatch opening edges on the hull. Apply Epoxy fi ller or equivalent to hatch edges to create a perfect seal.
6. Operate the thruster to “IN” position. Smooth out the fi ller and add more if needed. After curing time, grind and smoothen the surface.
7. Unscrew and remove hatch to smoothen off excessive material before coating the hatch.
8. Apply fi ller on to tunnel rings contact surface, so the hatch will be secured properly. Now re-install hatch in its correct position. Tighten bolts so hatch
will fi t properly.
9. Apply coating inside and outside of hatch opening on hull.
MC_0068
!
Please refer to the graphic for special considerations relating to your model
!
MG_0129
1
4
5
6
7 - 9
2
3
Pin bolts with sharp
ends to punch mark
the hole pattern to
hatch
Tap/ press to get punch
marks of hole pattern
Drill holes
Countersink all
4 holes
Apply a layer of
aluminium or duct
tape on hatch
opening edges
Apply filler on
hatch edges
Smooth out filler and add
more if needed. After curing
time grind and smoothen
the surface
Apply coating
Tighten bolts
and nuts
Glue tunnel rings
to hatch before
tightening bolts
