Raymarine Transducers, Руководство пользователя, Страница: 31 / 56

Chapter 2: Installation 25
3. Apply a 1/16" (2mm) thick layer of marine sealant to the sides of
the transducer that will contact the fairing, if used, and up the stem
1/4" (6mm) higher than the combined thickness of the fairing,
hull, backing block, and hull nut. This will ensure there is marine
sealant in the threads to seal the hull and hold the hull nut securely
in place (see Figure 2-7 ).
Stainless steel transducer in metal hull - Apply the marine seal-
ant to the outside of the sleeving instead of the stem itself.
4. If a fairing is used, thread the transducer cable through the fairing
and seat the transducer firmly within the recess in the fairing.
5. Apply a 1/16" (2mm) thick layer of marine sealant to the surface
of the fairing that will contact the hull, if used.
Attaching the Transducer
1. From outside the hull, thread the cable through the mounting hole.
2. Push the stem of the transducer (with the fairing in place) into the
mounting hole using a twisting motion to squeeze out excess seal-
ant.
3. From inside the hull, slide the backing block onto the transducer
cable and stem, seating it firmly against the hull (Figure 2-9 ).
CAUTION:
Be careful to avoid cross threading the cap nut.
4. Screw the hull nut in place and tighten it with slip-joint pliers.
Stainless steel transducer in metal hull - Be sure the top of the
isolation sleeve is below the top of the backing block to prevent
the sleeving from interfering with tightening the hull nut.
5. Apply a 1/16" (2mm) thick layer of marine sealant to the anti-
rotation bolt, 1/4" (6mm) higher than the combined thickness of
the fairing, hull, backing block, washer, and nut. This will ensure
that there is marine sealant on the threads to seal the hull and hold
the nut securely in place (see Figure 2-8 ).
6. Push the bolt through the fairing, if used, and into the hull.
7. From inside the hull, slide the washer and nut onto the bolt. Screw
the nut in place and tighten it with slip-joint pliers.
Wood hull - Allow for the wood to swell.