Car engine electrical equipment VAZ-21051

Technical characteristics of the battery
Battery Type 6ST-55P Nominal voltage, V 12 Nominal capacity at 20-hour discharge mode and electrolyte temperature (27 + (-2))°C at the beginning of discharge, A h 55 Discharge...

Bringing a dry-charged battery into working condition
Temperature correction to hydrometer readings when changing the density of the electrolyte Electrolyte temperature,°C Correction, g/cm³ from -40 to -26 -0,04 from -25 to -11 -0,03...

Checking the electrolyte level in the battery
The electrolyte level in all elements should be between the "MIN" and "MAX" marks on the translucent battery case. If there are no marks, the electrolyte level should be 5-10 mm...

Checking the battery level
Electrolyte density at 250°C, g/cm³ Climate region (average monthly air temperature in January, °C) Time of year Fully charged battery The battery is discharged by 25% by 50% Very...

Charging the battery
1. After removing the battery from the vehicle, carefully clean it, especially its upper part, check the electrolyte level and, if necessary, bring it up to normal. 2. The battery...

Description of the generator design
Generator 37.3701 a – voltage regulator and brush assembly for generators produced since 1996.; 1 – generator cover from the contact ring side; 2 – rectifier block mounting bolt;...

Generator technical characteristics
Maximum output current at 13 V and rotor speed of 5000 min⁻¹, A 55 (45 *) Adjustable voltage limits, V 14,1±0,5 Maximum rotation speed rotor, min⁻¹ 13000 Engine-generator gear...

Testing the generator on the bench
Wiring diagram for testing generator 37.3701 on the stand 1 – generator; 2 – control lamp 12 V, 3 W; 3 – voltmeter; 4 – ammeter; 5 – rheostat; 6 – switch; 7 – battery Attention!...

Checking the generator with an oscilloscope
Generator Rectified Voltage Waveform I – generator is OK; II – diode is broken; III – open circuit in the diode circuit The oscilloscope allows you to accurately and quickly check...

Checking the excitation winding of the generator rotor
The excitation winding is checked after disassembling the generator. But it can be checked without removing the generator from the car, by removing only the voltage regulator...

Checking the generator stator
The stator is checked separately, after disassembling the generator. The terminals of its winding must be disconnected from the rectifier unit. 1. First of all, check with an...

Checking the diodes of the generator rectifier block
Circuits for testing rectifier block diodes a - checking both "positive" and "negative" diodes simultaneously; b - checking "negative" diodes; in - checking "positive" diodes; 1 –...

Checking additional diodes on generator 37.3701
A short circuit of additional diodes can be checked without removing and disassembling the generator. Just as for checking the diodes of the rectifier unit, it is necessary to...

Checking the voltage regulator
Checking the voltage regulator on the generator 37.3701 a – produced since 1996.; b – produced before 1996.; 1 – battery; 2 – voltage regulator ground terminal; 3 – voltage...

Checking the Generator Capacitor
The capacitor serves to protect the vehicle's electronic equipment from voltage pulses in the ignition system, as well as to reduce interference with radio reception. Damage to...

Disassembling the generator
Generator parts 37.3701 1 – voltage regulator assembly with brush holder for generators produced since 1996.; 2 – voltage regulator and brush holder for generators produced before...

Generator assembly
The misalignment of the holes in the generator cover legs should be no more than 0.4 mm. Therefore, during assembly, it is necessary to insert a special gauge into these holes. It...

Replacing the generator brush holder
1. If the brushes are worn out and protrude from the brush holder by less than 5 mm, replace the brush holder with brushes. 2. For generator 37.3701 manufactured before 1996, to...

Replacing generator rotor bearings
1. To remove a faulty bearing from the drive-side cover, unscrew the nuts of the screws that hold the bearing mounting washers, remove the washers with screws and press out the...

Replacing additional generator diodes
1. To replace, unsolder the leads of the damaged diode and carefully remove it from the plastic holder, avoiding sharp impacts on the rectifier unit. 2. Then clean the diode...

Description of the starter design
Starter 35.3708 1 – anchor shaft; 2 – starter cover bushing; 3 – gear travel limiting ring; 4 – drive gear with inner ring of overrunning clutch; 5 – thrust half ring; 6 –...

Technical characteristics of the starter
Nominal power, kW 1,3 Current consumption at rated power, no more than, A 290 (260*) Current consumption in the braked state, no more than, A 550 (500*) Current consumption at...

Checking the starter on the stand
Wiring diagram for testing the starter on the stand 1 – battery; 2 – ammeter with 1000 A shunt; 3 – switch; 4 – rheostat; 5 – voltmeter with a scale limit of at least 15 V; 6 –...

Starter parts
Starter parts 35.3708 1 – starter cover on the drive side with an intermediate ring; 2 – rubber plug; 3 – drive lever; 4 – traction relay; 10 – adjusting washer; 11 – body; 12 –...

Disassembling the starter
Starter 35.3708 1. Loosen the nut on the lower contact bolt of the traction relay and disconnect the stator winding terminal from it. Loosen the nuts securing the traction relay...

Checking the technical condition of starter parts
Anchor 1. Check with a megohmmeter or a lamp powered by 220 V to see if the armature winding is shorted to ground. 2. The voltage is supplied through the lamp to the collector...

Assembling the starter
1. Before assembly, lubricate the helical splines of the anchor shaft and the overrunning clutch hub, the gear and the cover bushings with engine oil. Lubricate the drive ring...

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More articles from other manuals on VAZ cars:
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➠ Power unit: Engine repair VAZ-21011 (1974-1983)
➠ Power unit: Engine repair VAZ-2107 (1982-2012)
➠ Electrical equipment: Engine electrics VAZ-21214 (1994-2006)
➠ Electrical equipment: Engine electrics VAZ-2106 (1976-2006)

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