From outside hull, slide fairing block up onto the threaded rods, and press
up against the hull. Verify that the length of the rods extending below the
flat face of fairing block is between 2.75” to 3” in length. If not, adjust by
tightening the nuts on the rods inside the hull to obtain this length.
Secure the fairing block to hull using a stainless steel washer and nut on
each rod as shown in the figure. Tighten the nuts with a torque wrench using
a force not exceeding 5
ft./lbs
(7 newton-meters). If a wood fairing block is
used, tighten the nuts only lightly. This will allow the fairing block to
swell
in sea water and then the internal nuts at the backing blocks may be
tightened to 5
ft./lbs.
(7 newton-meters) for proper torque.
3. Route Cable through the
Stuffing
‘Ibbe.
Uncoil and thread the transducer cable through the stuffing tube to the
inside of the hull. Make a service loop inside the cavity of the fairing block
so there will be no tension applied to the cable.
IMPORTANT
NOTE
When handling the transducer and cable
do
msducer
by its cable because this may sever internal connections and
m
hold the transducer in place during transducer mounting by applying
tension to the transducer cable.
4. Caulk the Fair-lug Block.
Following the manufacturer’s directions, apply
l/8”
(3 mm) thick layer of
caulking to the surface of the fairing block that will be in contact with the
transducer.
5. Mount the transducer.
While holding the transducer in position against the fairing block, slide a
rubber washer and a stainless steel washer (provided) onto each transducer
mounting rod. Apply some caulking to the mounting rod and then secure
the transducer with nuts provided. Tighten the nuts with a torque wrench
using a force not exceeding 5
ft./lbs
(7 newton-meters). There should be a
minimum of 3 threads extending beyond the head
ofthe
nut when tightened.
WARNING:
DO NOT USE SOLVENTS
Do not expose the 2528L resin transducer to any solvents while cleaning
away excess sealants. Strong solvents such as acetone and methylene
chloride will attack many types of plastics and can dramatically reduce the
strength of those materials. Accumulation of grease or grime should be
removed with a soft damp cloth and
mild detergents.
INSTALLATION 28
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