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The 4125 Series Dual-frequency Side Scan Sonar System is ruggedly designed and built, and therefore
requires little maintenance. However, to ensure long-lasting, reliable service, some periodic maintenance
is recommended.
Maintenance on the 4125 Series Dual-frequency Side Scan Sonar System should be performed on a regular
basis, or as often as necessary, depending on use. However, most of the maintenance is performed after
each deployment and recovery cycle of the tow vehicle.
Cleaning the 4125-P Portable Topside Processor
The 4125-P Portable Topside Processor requires minimal maintenance. However, the TOWCABLE
connector should be periodically lubricated, and the other connectors on the side panel should be
inspected regularly.
To inspect and clean the tow vehicle and the tow cable after use:
1. Wash down the tow vehicle and the tow cable with clean, fresh water. Be sure to remove any
debris on the tow vehicle body and tail fins.
2. Inspect the port and starboard transducer arrays, and thoroughly spray them to remove any
buildup of debris. If they exhibit any oily residue, clean them using a soft cloth, along with a mild,
non-abrasive detergent and water.
CAUTION!
Do not use harsh chemical detergents on the transducer arrays.
3. Inspect the tail fins for warping and replace them where necessary.
4. Inspect the shear pin and replace it if it is worn or damaged.
5. Dry the tow vehicle in shade, and when dry, store it in its case.
Inspecting and Cleaning the Connections
Regularly inspect the contacts on the male pins of each underwater connector in the tow vehicle and on
the tow cable for corrosion or oxidation. To remove any oxidation, rub the contacts lightly with 800 grit
emery cloth cut into strips equal to or less than the width of a contact. A pencil eraser can also be used
for this purpose. Clean the female sockets using a cotton swab and rubbing alcohol. A .22 caliber bore
brush with only nylon bristles can be used to remove light oxidation.
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