Coolant temperature gauge
Device type - UK-193; The device operates in conjunction with the TM-106 sensor. With a sensor resistance of 640-1320 ohms, the arrow should be at the beginning of the scale, with a resistance of 77-89 ohms, at the beginning of the red section, and with a sensor resistance of 40-50 ohms, it should deviate to the end of the red section of the scale.
Fuel gauge
Device type UB-193. It is used in tandem with the BM-168 sensor, which is installed in the fuel tank. This sensor also turns on the fuel reserve warning lamp if there are 5.3-6.5 liters of gasoline left in the tank:
With a sensor resistance of 285-335 ohms, the arrow should be at the beginning of the scale, with a resistance of 100-135 ohms - in the middle of the scale, and with a resistance of 7-25 ohms - at the end of the scale.
Oil pressure gauge
Pointer type UK-194. The device has a warning lamp for insufficient oil pressure, which is switched on by a sensor of the MM-120 type.
The pointer is used in conjunction with the MM393A type sensor, which changes the resistance of the electrical circuit depending on the oil pressure in the engine lubrication system. With a sensor resistance of 285-335 ohms, the pointer should be at the beginning of the scale, with a resistance of 100-135 ohms - in the middle of the scale, and with a resistance of 0-25 ohms - at the end of the scale.
Tachometer
The car is equipped with an electronic tachometer TX-193. The principle of operation of the tachometer is based on measuring the frequency of the voltage pulses in the primary circuit of the engine ignition system.
The tachometer is checked on a stand that simulates the ignition system of a car. Having connected the tachometer to the circuit of the stand in the same way as on a car, set the voltage in the primary circuit to 14 V and the gap in the arrester of the stand to 7 mm. Rotate the ignition distributor roller at such a speed that the tachometer needle reaches one of the scale divisions. At this point, check that the speed of the distributor roller is within the limits indicated in Table. 7-6.
Table 7-6. Data for checking the tachometer
Countdown, min-1 | Speed of rotation of the roller of the distributor of ignition, min-1 |
1000 | 440-550 |
2000 | 875-1050 |
3000 | 1350-1525 |
4000 | 1850-2025 |
5000 | 2350-2500 |
6000 | 2900-3000 |
7000 | 3350-3500 |
8000 | 3800-4200 |
Speedometer
The SP-193 type speedometer consists of a dial indicator of the vehicle speed in km/h, a total distance counter in km traveled by the vehicle, and a daily vehicle mileage counter.
The readings of the daily counter can be reset with the handle placed on the instrument panel. To do this, turn the handle counterclockwise.
To avoid damage to the meter, you must not reset its readings while the car is moving.
Check the speedometer by comparing its readings with the reference. Data for verification are given in table. 7-7.
Table 7-7. Data for checking the speedometer
Drive shaft speed, min-1 | Speedometer readings, km/h |
500 | 31-35 |
1000 | 62-66,5 |
1500 | 93-98 |
2000 | 124-130 |
2500 | 155-161,5 |