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MOSKVICH-412

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Fuel gauge

Fuel gauge of the electromagnetic operating principle is of a receiver located in the instrument cluster, and the sensor (benzoreostata) BM134-A installed in the upper part of the fuel tank. The scheme of the level indicator fuel is shown in Fig. 237. The pointer only works when the ignition. When ignition is turned off needle stands at zero. The pointer is only approximate control of fuel consumption. So not burned out coil rheostat in the repair of electrical wiring or change devices is not recommended to prevent the closure clips pointer and entanglement ends of the wires connected to terminals pointer. The correctness of the testimony fuel gauge can be checked by observation the position of the arrow device when filling the fuel tank of the volumetric glassware (Or emptying the tank). A healthy and properly regulated unit at a voltage of 12.5 V and a temperature 20 ° C ensures the accuracy of the scale at the points 0 and 1/4 (approximately 7% of capacity tank), and in point 1 (full) - about 10%. The displacement direction of the axis of the scale division on the width of the arrows is taken for error, equal to 7%. At the remaining points of the scale accuracy of the not standardized. If you change the voltage in the circuit of the device, as well as the temperature environmental error of the instrument may be slightly increased. The permissible error of fuel level indicator when working with a rheostat control shown in Table. 23. Table 23 The permissible error of fuel level indicator when working with a rheostat control -------------------------------------------------- --------------------------------- Number of error readings,% Fuel in the tank for emptying the tank when filling the tank -------------------------------------------------- --------------------------------- 0 center line of the arrow within the contour of zero division 1/4 +5 -7 1/2 +7 -7 1 +10 -10 -------------------------------------------------- --------------------------------- Москвич-412
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