Ignition distributor
Bosch branded ignition distributor, shielded, four-spark, with vacuum and centrifugal ignition timing controllers, with a high-voltage current distributor with axial leads, with a built-in microelectronic sensor (generator) control pulses with a change in the phase angle of the resulting voltage. It is driven by a helical gear of the intermediate shaft. Direction of rotation left (camshaft drive side). The voltage generated by the generator sensor is in the range of 0-2 V. The resistance of the distributor rotor (marking «R1»), Ohm: 1000.
Numbers of sensors-distributors of ignition according to the Bosch catalog:
- engine «DR»: 0 237 020 052; 0 237 020 084 or 0 237 020 104;
- engine «DS»: 0 237 020 086 or 0 237 020 118.
Ignition advance angle to TDC with attached hose of the vacuum ignition timing regulator at idle: 18°± 1°.
Note. When using unalloyed gasoline with an octane rating of 95, it is recommended to reduce the initial ignition timing to TDC to 10°± 1°.
Switch
The switch converts the control pulses of the generator sensor into current pulses in the primary winding of the ignition coil. It is installed in the passenger compartment, under the left bottom trim next to the engine hood lock drive handle and has a seven-plug connector (plug no. 7 reserved). 1.5 s after the stop of the ignition distribution sensor roller, a special switch circuit smoothly breaks the ignition coil power supply circuit, preventing sparking. This prevents excessive heating of the ignition coil with a low primary resistance value.
Switch brand and manufacturer's catalog number: Tele-Iunken 211 905 351 D; Bosch 0 227 100 104 or 0 227 100 138.
Ignition coil
Brand and catalog number: Bosch 0 221 122 022 or 0 221 122 350. Primary winding resistance at a temperature of 20°C, Ohm: 0.52-0.76.
Resistance of the secondary winding at a temperature of 20°C, kOhm: 2.4-3.5.
Spark plug
* Recommended when using the car, mainly when driving short distances frequently.
Gap between electrodes, mm:
- engine «DR»: 0,6-0,8;
- engines «DS», «NP»: 0,8-0,9.
From September 1985 on vehicles with engine «DS» candles with an extended service life were installed, which are replaced after 30,000 km, and not after 15,000 km, as before.
Brand and type of candles: Bosch W6DO; Weights 14-6 DU: Champion N79V. Gap between electrodes, mm: 0.8±1.0.
High voltage wires
High voltage wires are equipped with anti-interference lugs.
Resistance of high voltage wires, kOhm:
- central wire: 22.0±0.8;
- other wires: 6.0±1.4.
Resistance of interference suppression tips, kOhm:
- from the side of the spark plug: 1.0±0.4;
- from the sensor-distributor of ignition: 5.0±1.0.
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