Table of contents: Battery ↓ Generator ↓ Generator drive belt ↓ Starter ↓ Headlights ↓ Direction indicator relay ↓ Windscreen wiper and washer ↓ Electric motor of the cooling system… ↓ Centralized door locking system ↓
The electrical equipment is made according to a single-wire scheme. The negative terminals of consumers and power sources are connected to the "ground", which functions as the second wire. The voltage in the network is 12 V.
Battery
On cars with 5 - cylinder engines, a battery with a nominal voltage of 12 V and a nominal capacity of 6.3 Ah is installed, on cars with 4 - cylinder engines and a manual transmission, a battery with a capacity of 45 Ah, on cars with 4 - cylinder engines and an automatic transmission, a battery with a capacity of 54 Ah. The positive terminal of the battery is connected to the starter and through the mounting block to the rest of the electrical equipment.
Always on (regardless of the position of the key in the ignition switch and after the key is removed) power supply circuits for the side light bulbs, ceiling light, luggage compartment lighting, horn, clock, cigarette lighter, radio receiver and centralized door locking system.
Generator
The cars were equipped with a three-phase Bosch alternator with a built-in rectifier block on nine valves (six rectifier diodes and three additional diodes) and an electronic voltage regulator. The stator windings are connected in a star. The rotor consists of an excitation winding, two contact rings are pressed onto the rotor shaft. The generator is cooled through the holes in the covers and by a fan mounted on the drive pulley. The generator is driven by a V-belt.
Catalogue numbers:
- maximum output current:
- 55 A: 0 120 489 010; 0 120 489 01; 0 120 489 228; 3 120 489 229:
- 65 A: 0 120 489 006; 0 120 489 007; 0 120 489 195; 0 120 489 196, 0 120 489 197.
- 90 A: 0 120 469 555; 0 120 469 556; 0 120 469 631; 0 120 469 632;
- Electronic voltage regulator type: EL 14 V 4C.
- Voltage regulator part number:
- 4-cylinder vehicles: 1,197,311,005;
- cars with 5-cylinder engines: 1,197,311,011.
The power of the charge tone at a rotor speed of 3000 rpm. A:
- generators with a maximum output current of 55 A: 35;
- generators with a maximum output current of 65 A: 45;
- generators with a maximum output current of 90 A: 60.
Maximum power at terminal voltage of 14 V and maximum output current of 65 A, W - 910.
Nominal voltage, V: 14.
Rotor speed at the moment the charging current starts to flow to the battery, with a terminal voltage of 14 V and steady state, rpm: 1000.
Charging current at terminal voltage of 14 V and steady state, A: at frequency:
- 1400 rpm: 20;
- 2100 rpm: 44;
- 6000 rpm: 65.
Rotor winding resistance at 20°C, Ohm: 2.8-3.0.
Stator winding resistance between phase terminals at 20°C, Ohm: 0.10-0.11.
Adjustable voltage limits at a rotor speed of 3000 rpm and a discharge current of 45 A, V: 12.5-14.5.
Height of new brushes, mm: 1.3.
Minimum protrusion of brushes from the brush holder, mm: 5.
Generator drive belt
The normal deflection of the belt when pressed hard with the thumb should be within 10-15 mm.
Brand and type:
- 4-cylinder cars: Continental 9.5x950;
- cars with 5-cylinder engines: Continental 9.5x800.
Starter
The vehicles are equipped with a starter consisting of a four-pole DC electric motor with series excitation and a traction relay. The DW type starter has a step-down planetary gear. The anchor shaft rotates in self-lubricating bushings. The starter flange is attached to the power unit with three bolts on vehicles with 4-cylinder engines and two bolts on vehicles with 5-cylinder engines.
Brand: Bosch.
Type:
- cars with 4-cylinder engines - EF 12 V 0.95 kW.
- cars with 5-cylinder engines: DW 12 V 1.1 kW.
Catalogue numbers:
- cars with 4-cylinder engines 0 001 208 709, 0 001 208 710; 0 001 208 712;
- cars with 5-cylinder engines: 0 001 108 001; 0 001 108 002; 0 001 108 009; 0 001 108 010.
Technical characteristics of starters
* When using a battery with a nominal voltage of 12 V and a capacity of 143 Ah.
Headlights
Brand: Hella or Bosch.
Catalogue numbers of Bosch headlights:
- right: 0 301 066 112;
- left: 0 301 066 111.
Direction indicator relay
Brand and catalog number: Hella 4 DB 003 750-00.
Windscreen wiper and washer
Brand: Bosch or SWF.
Part numbers supplied as spare parts according to the Bosch catalogue:
- electric motor assembly - 0 390 246 130 or 0 390 241 909 (with interference suppression resistance);
- brush holder: left: 3 398 102 153; right: 3 398 102 154;
- brush (length 53 mm): 3 397 1 10 792.
Brand and catalog number of the Audi relay-interrupter: Siemens, 431 955 531
Electric motor of the cooling system fan
Brand and catalog number: Bosch 0 130 107 237.
Centralized door locking system
The centralized door locking system includes pneumatic drives for locking the trunk lid, the right front and rear doors, and the switch in the left front door. The control unit includes an electric pneumatic pump and a control time relay and is installed under the rear seat on the right side.
Brand and catalog number of the control time relay: Hella 443 862 257 B.
(The full version is posted on the resource AUDIMANUAL.RU)