83320-2210A High Performance Fuel Level Sensor for HINO

83320-2210A fuel level sensor for Hino trucks. The sender measures the fuel level in the tank and drives the gauge on the instrument panel, and on commercial vehicles it is also used by the fleet telematics or the body computer where fitted.

The unit is a float on a rod arm running over a resistor track, mounted through the top of the tank on a flange with a gasket and a ring of bolts or a bayonet ring depending on tank type. Truck senders are built for a much deeper tank than a passenger car unit, so the arm is long and the float is a large closed cell block. The connector is a sealed plug, and the earth return is often through the mounting flange, which is why a corroded flange will make the gauge read full or empty regardless of the actual level.

Fitment is Hino truck models that use this sender number. Before removing, clean the area around the flange and mark the arm orientation, because the sender has to go back in the same rotational position to sweep the correct part of the tank. Check the flange gasket and the mounting bolts for corrosion; on trucks that work in wet or coastal conditions the flange is a frequent source of water ingress into the tank.

Symptoms are a gauge that reads empty with a full tank, a needle that stays at one position regardless of the level, and a low fuel warning that comes on and off over bumps. Because the sender earth often goes through the flange, a bad earth produces the same reading as a failed sender, so measure resistance from the sender body to the chassis before replacing anything.

Each sender is swept through its full travel and the resistance at five points is recorded. A new flange gasket is supplied.