7-32 170 Series Monitor Revision C
2000947-004
Serviceable Assemblies: Nautilus Transducer Reassembly
Nautilus Transducer Reassembly
CAUTIONS
VISIBLE INSPECTION—Ensure the base sealing groove, flat-
seal o-ring, sealing surface, and sealing screws are free of visible
surface defects, dust, dirt, and foreign material.
SINGLE-USE COMPONENTS—Do not reuse case top, flat-seal
o-ring, sealing screws, or screw caps. Discard these items each
time a transducer is opened.
SEALS—Wetting of seals is not required.
1. Install new flat-seal o-ring.
2. Install case top and tighten five sealing screws. Hand tighten each screw a small
amount going in a clockwise direction, skipping every other screw. Repeat until
all screws are torqued to 48 in-oz.
3. Apply one drop of Loctite adhesive
1
to the perimeter of the hole for the flat
screw cap (Figure 7-5). Insert flat screw cap and press into place.
4. Apply one drop of Loctite adhesive
1
to the perimeter of the hole for a curved
screw cap. Insert the curved screw cap being careful to align it according to the
curvature of the case top; the small burr on the screw cap side should face the
outside edge of the transducer. (See Figure 7-10 and Figure 7-11.) Press the
screw cap firmly into place. Repeat for the remaining three curved screw caps.
5. For button-style transducers only, install and torque belt knob to
48 in-oz.
6. Refer to “Testing a Repaired Transducer (TOCO or US)” on
page 7-34.
1
Using Loctite Adhesive #454 is recommended in order to secure the screw caps.
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