Navico B744VC active replacement insert

This Navico B744VC active insert is a replacement part specifically designed for the Airmar B744V/VC TRIDUCER® Multisensor through-hull transducer. It allows restoring or replacing the speed and temperature sensors of the transducer.

This replacement insert specifically restores the speed sensor (paddlewheel) and temperature functions of your Airmar B744V/VC transducer.

No, this Navico B744VC active insert does not include the depth sensor. It is designed to restore only speed and temperature functions. The depth sensor is an integrated function of the Airmar B744V/VC sounder's main housing.

The Navico B744VC active insert reference number (SKU) is 000-15470-001.

This replacement insert is by Navico. It is designed to be compatible with Airmar transducers.

The insert itself is generally made of plastic materials and electronic components for speed and temperature sensors. The parent Airmar B744V/VC transducer, into which this insert integrates, features a bronze housing.

This insert is specifically compatible with the Airmar B744V and B744VC TRIDUCER® Multisensor through-hull transducer.

No, this insert is designed as a specific replacement part for the Airmar B744V/VC transducer. Compatibility with other Airmar transducer models is not guaranteed and not recommended.

Yes, the installation documentation mentions the B744VL. This insert is compatible with Airmar transducers B744V, B744VC, and B744VL.

As a Navico product and a replacement for a standard Airmar transducer, this insert is designed to work with display systems compatible with Airmar B744V/VC transducers. Brands in the Navico group (Lowrance, Simrad, B&G) are generally compatible with this type of transducer.

Before installation, ensure all O-rings are intact and properly lubricated with the supplied silicone grease. It is also recommended to check the condition of the transducer housing and ensure the area is clean. Installation must be performed when the boat is out of the water to prevent immediate leaks.

To ensure perfect watertightness:

Check that all O-rings are intact and correctly positioned.Lubricate the O-rings generously with the provided silicone grease.Insert the insert into the housing with a twisting motion to properly seat the O-rings.Tighten the insert nut by hand only, without over-tightening.Attach the safety wire to prevent accidental loosening.

Yes, it is essential to lubricate all O-rings with the supplied silicone grease before installing the insert. Failure to lubricate the O-rings can damage them, prevent full insertion, and compromise watertightness, risking water ingress into the boat.

You must slide the insert into the housing with the arrow on top of the insert pointing forward (toward the bow of the boat). The insert is designed to fit in only one way, aligning the keys with the notches in the housing.

Yes, it is strongly recommended to attach the safety wire after installing the insert. This prevents the insert from disengaging in the unlikely event that the cap nut and/or the insert nut loosens or is improperly tightened, providing additional protection against leaks.

No, it is important never to remove the cap (CAP nut). Removing the cap would cause the entire valve assembly to come out, and the insert or blanking plug could no longer be secured without the valve assembly. Maintenance of the insert (paddlewheel) is done by removing the insert nut, not the cap.