Raymarine REALVISION 3D RV-3 Series Installation Instructions Manual page 30

30. Remove the Cable protector by pulling the 2 tabs away from the back of the Hull nut.
Removing cable protector
31. Apply a thick bead of marine grade sealant to the bottom face of the hull nut.
32. Screw the hull nut onto the transducer stem and tighten by hand.
Ensure that the hull nut is adequately tightened. You should see the sealant protruding from
the edges of all applied surfaces.
33. Secure the hull nut by feeding a piece of locking wire (not supplied) through the holes in the nut
and then tightly wrapping around the threaded section as close to the top of the nut as possible.
The wire should then be tied to prevent it coming loose.
Locking wire
34. Place the small washer over the anti-rotation bolt.
35. Apply additional marine-grade sealant to the anti-rotation bolt above the small washer.
36. Screw the anti-rotation nut onto the bolt and fully tighten, using a suitable sized wrench (spanner).
37. Remove any excess sealant on the outside of the hull and transducer.
38. Ensure that the marine-grade sealant has fully cured
Refer to the sealant manufacturer's instructions for curing times.
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