Scheme of the ignition system
1 - generator; 2 - ignition switch; 3 - ignition distributor; 4 - breaker cam; 5 - spark plugs; 6 - ignition coil; 7 - battery
Ignition distributor R-125
1 - roller; 2 - oil deflector sleeve; 3 - roller oiler; 4 - eccentric octane corrector; 5 - felt; 6 - base plate of the centrifugal regulator; 7 - rotor; 8 – side electrode with terminal; 9 - cover; 10 – central electrode with terminal; 11 - coal of the central electrode; 12 - resistor; 13 - outer contact of the rotor; 14 - centrifugal regulator plate; 15 - weight; 16 - breaker cam; 17 - contact group; 18 - screw fastening the contact group; 19 - movable breaker plate; 20 - groove; 21 - capacitor; 22 – ignition distributor housing
Ignition distributor 30.3706-01
1 – the roller of the distributor of ignition; 2 - wire for supplying current to the ignition distributor; 3 – a latch of fastening of a cover; 4 - housing of the vacuum regulator; 5 - diaphragm; 6 - cover of the vacuum regulator; 7 – draft of the vacuum regulator; 8 - a branch pipe for a vacuum hose from the carburetor; 9 - lubricating wick (felt) cam; 10 – a basic plate of a regulator of an advancing of ignition; 11 – ignition distributor rotor; 12 - side electrode with a terminal for a wire to a spark plug; 13 – a cover of the distributor of ignition; 14 - central terminal for the wire from the ignition coil; 15 - central carbon electrode with a spring; 16 – central contact of the rotor; 17 - resistor for suppression of radio interference; 18 - outer contact of the rotor; 19 - leading plate of the centrifugal regulator; 20 - weight of the centrifugal ignition timing controller; 21 - the axis of the lever; 22 - breaker cam; 23 - breaker lever; 24 - rack with breaker contacts; 25 - breaker contacts; 26 - movable breaker plate; 27 - capacitor; 28 – the case of the distributor of ignition; 29 - oil-slinging sleeve of the roller; 30 - bearing retainer plate; 31 - bearing of the movable breaker plate; 32 – oiler body; 33 - screws for fastening the rack with breaker contacts; 34 - terminal clamp screw; a - a groove for distinguishing ignition distributors 30.3706; b - groove for moving the rack with contacts
Until 1980, the R-125 ignition distributor was used on VAZ-2101, -2102 cars. It was installed on engines with old type 2101 carburetors. This ignition distributor had an octane corrector 4, which could change the ignition timing within a small range.
Since 1980, when carburetors 2105-1107010 began to be installed on engines (type «Ozone»), the ignition distributor 30.3706-01 with a vacuum ignition timing controller began to be installed. During the transition period, an ignition distributor 30.3706-83 was also produced, which could be installed on engines with old carburetors. It did not have a vacuum regulator, but otherwise its design was similar to that of the ignition distributor 30.3706-01.
There are also ignition distributors 30.3706, which are distinguished by a longer shaft and are installed on engines 2103 and 2106. To distinguish the ignition distributors 30.3706, there is a groove «A» at the end of the roller.