4-2
4125 SIDE SCAN SONAR SYSTEM 0004823_REV_C
To extend the life and increase the reliability of the connectors, apply a thin film of silicone dielectric
grease, such as Novagard G624 general purpose silicone grease or an equivalent, to the entire surface of
each male pin. A small amount of grease should also be applied to the opening of each female socket. Use
only a small amount, as packing too much grease will cause a hydraulic lock, preventing the connectors
from being properly mated.
NOTE: Remember to always install dummy connectors on the
connectors of the tow cable and the tow vehicle tow cable connector.
4
Re-arming the Tow Vehicle
Should the shear pin snap, the tow vehicle must be rearmed with a new one. Spare shear pins and
retaining clips are in the spares kit. Be sure to use a plastic shear pin from the spares kit. Use of a metal
shear pin is not recommended unless it is the only available option. A metal pin may not shear if the tow
vehicle hits an obstruction or becomes snagged, resulting in the loss of the tow vehicle should the tow
cable break.
In addition, when the tow cable connector on the tow vehicle pulls out during recovery from a snag, it
exposes the live tow cable contacts to seawater. Immediately deactivate the system if this happens to
prevent electrolysis on the connector pins. Always check the female tow cable connector and tow fish
connector for any evidence of damager prior to rearming the tow vehicle. If any oxidation is present, the
tow cable may have to be re-terminated.
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