Generator Specifications

The cars were equipped with a three-phase alternator brand Bosch (some cars were equipped with a Motorola brand generator with similar characteristics) type K1 14V with built-in rectifier unit on nine valves (six rectifier diodes and three additional diodes) and electronic voltage regulator. The stator windings are star connected. The rotor consists of an excitation winding, two slip rings are pressed onto the rotor shaft. The generator is cooled through the holes in the covers and with the help of a fan mounted on the drive pulley. The generator is driven by a V-belt.

Catalog numbers of generators

Maximum recoil current:

• 45 A: 0120 489 015; 0120 489 076; 0120 489 964; 0120 489 987;
• 55 A: 0120 489 009; 0120 489 229;
• 65 A: 0120 489 003; 0120 489 007; 0120 489 077; 0120 489 196; 0120 489 197;
• 75 A: 0120 469 552; 0120 469 553;
• 90 A: 0120 469 556; 0120 469 557; 0120 469 582; 0120 469 586; 0120 469 632; 0120 469 633.

Charge current at engine speed of 3000 rpm, A:

• generator with a maximum output current of 45 A: 30;
• generator with a maximum output current of 65 A: 40;
• generator with a maximum output current of 75 A: 50;
• generator with a maximum output current of 90 A: 60.

Maximum power at a voltage of 14 V at the terminals and a maximum output current of 65 A, W: 910.

Rated voltage. B: 14.

Rotor speed at the start of the charging current supply to the battery, with a voltage at the terminals of 14 V and steady state, rpm: 1000.

Rotor winding resistance at 20°С, Ohm: 2.8-3.0.


Stator winding resistance between phase terminals at 20°C, Ohm: 0.10-0.11.

Limits of adjustable voltage at a rotor speed of 3000 rpm and a recoil current of 45 A, V: 12.5-14.5.

Height of new brushes, mm: 10.

Minimum protrusion of brushes from the brush holder, mm: 5.

Alternator drive belt

Brand and type:

• vehicles with FZ and EP engines manufactured before July 1983: Gates 08 MC; Ventiflex 1094 9.5x700 La;
• vehicles with FZ and EP engines manufactured since July 1983, YN, WV, YP, DT and DS: Gates 6265 MC; Ventiflex 1009 9.5x935 La;
• vehicles with WN and JS engines: Gates 6212 MC; Ventiflex 1054 9.5x800 La.

The normal deflection of the belt with a strong thumb pressure on the middle of the branch should be within 10-15 mm.