Every car enthusiast knows that the ignition system in any car is needed to ignite the combustible mixture in the engine. GAZ trucks are no exception. In this article, we propose to find out what the ignition order of the GAZ-53 is, what malfunctions a motorist may encounter and how it is configured.

To know how the system is adjusted and configured correctly, we recommend that you first familiarize yourself with the device. GAZ-53 trucks are equipped with contactless SZ.

Such a BSZ is a battery one, since it contains current sources, in particular, we are talking about:

battery;
the coil itself;
switching device;
breaker-distributor;
candles;
resistor element;
SZ switch.

Tuned truck GAZ-53

Any NW of a GAZ truck includes two circuits: high and low voltage.

The main components of the low-voltage network are:

12 volt battery.
Battery cables with terminals. These cables are stranded and are characterized by a large cross section.
Directly the lock, which performs the function of supplying power to the circuit.
contactless circuit on GAZ it is equipped with an ignition distributor breaker device mounted in the distributor. In the event that the system is contact, then the function of this component is performed by the distributor pulley, as well as contacts. In addition, instead of a breaker, a Hall sensor is sometimes mounted.
A switch designed to ensure the stable operation of the power unit.
Resistance designed to ensure the normal start of the engine and unload the operation of the GAS ignition coil when the power unit is operating at high revs. Thanks to this component, the coil cannot overheat.
Primary winding.

As for the secondary section, it includes the following components:

secondary winding;
distribution element, which includes a pulley, a cover, as well as a slider;
high-voltage wires that transmit a signal to candles;
candles.

When the lock is activated in the primary section, a magnetic field begins to form in the breaker design. When the distributor shaft rotates, the current is interrupted in this section of the circuit, respectively, the generated field disappears. At this time, a signal begins to appear in the winding of the secondary circuit, which subsequently diverges through the cylinders.

Wiring diagram of the NW of the GAZ-53 vehicle

System breakdowns

For what reasons does the device malfunction:

Breakdowns of the switch, which either breaks down or gets very hot. Such a breakdown is considered a “disease” for these machines, drivers write about this in their reviews. Due to overheating, the spark stops flowing, and this leads to the fact that the engine cannot be started. Only when the switch has cooled down can the engine be started.
Breaking high voltage. In the event that the cable is poorly installed in the cover, power unit may not function correctly. If you examine the internal combustion engine in the dark, you can see the cable breaking through due to the appearance of sparks.
Problems in the functioning of the breaker-distributor, in particular, we are talking about burning its cover. It should be noted that this structural component sometimes burns in the place where the coal with the spring is installed. When checking, it is advisable to pay attention to the condition of the cover 0 any cracks and damage should be absent.
Another problem is the burning of the contacts of the slider on the distributor.
Problems in the operation of the diaphragm on the vacuum regulator - it can skip. Because of this, the engine power will be reduced, and if you press the gas sharply, the car will begin to “choke”.
Overheated directly coil. This type of failure, as a rule, indicates the inoperability of the coil, sometimes it can be associated with the switch.
Candle failure.

Distribution element for GAZ-53

Self adjustment

If the ignition is later, the problem can be solved on its own. To adjust the distributor drive, it is necessary to correctly install and set the marks.

The drive is installed as follows:

First you need to set the piston of the first cylinder to top dead center. The crankshaft rotates until the marks on its pulley are aligned with the top mark.
After the crankshaft rotates until the moment when the marks on the pulley are aligned with mark 9 on the pointer.
Next, you should loosen the screw fixing the upper plate of the corrector to the breaker. Need to connect control lamp to the breaker terminal and ground. The ignition is activated, after which the breaker housing is rotated counterclockwise until the lamp starts to burn
Next, you need to tighten the screw fixing the breaker and put the rotor with a cover. On the section of the rotor plate, a wire is connected to the spark plug of the first cylinder. All other cables must be connected to the candles in the direction of the clock, while observing the order of operation of the cylinders themselves. That is, the first, fifth, fourth, second, sixth, third, seventh and eighth. Setting the ignition correctly, you should turn the crankshaft so that the mark on its shaft does not reach the center mark on the TDC indicator itself (the author of the video is Nail Poroshin).

It often happens that even after adjusting the electronic SZ, the motor still overheats. The power unit loses traction, gasoline consumption begins to increase, engine malfunctions may occur.

The problem can be solved by adjusting the angle of the system when the internal combustion engine is running:

When the power unit is running idling, you need to get to the distributor fixing screw. Use a 10 wrench to loosen it.
Then slightly turn the distributor in a counterclockwise direction. The screw must be fixed.
Pressing the gas pedal, check the throttle response of the power unit. If you hear that the power unit began to detonate, that is, there was a ringing, move the distributor back. A practical method is to set the required angle.
After that, the operation of the power unit must be checked while driving. If the motor starts running in normal mode, we can assume that the adjustment process has been successfully completed.

Video "Installing the distributor drive on GAS"

AvtoZam.com

What is the ignition procedure on a GAZ-53 truck: do-it-yourself installation and adjustment of the SZ

The ignition system plays important role for DVS. From uninterrupted operation SZ depends on the timeliness and power of spark formation and high-quality combustion of the fuel-combustible mixture. How to set up the ignition order of the GAZ-53 correctly, how the system itself works, what its main malfunctions are - this article says.

In order to repair and adjust the SZ on the GAZ-53, you need to know how it works.

These trucks are equipped with a contactless SZ, which consists of the following components:

power source - battery;
switch;
wires;
additional relay;
coil;
breaker-distributor;
current indicator;
resistor element;
ignition lock (switch).

Knowing the SZ device, the connection diagram of the ZZ and its other components, as well as the functions that each element performs, it is possible to identify problems by signs and eliminate their cause. All components of the SP can be divided into groups according to the tasks performed.

For normal ICE operation the following conditions must be met:

powerful spark;
correspondence between the formation of a spark and the operation of the power unit;
no spark gaps.

Whole system electronic ignition consists of two circuits: primary and secondary.

The primary includes the following elements:

Battery with multi-core cables of large cross section;
a switch that supplies power to the circuit;
primary winding;
breaker distributor located in the distributor;
switching device that ensures stability of work;
resistance necessary for successful engine start and short circuit unloading, excluding its overheating.

The secondary circuit includes:

distributor;
wires for supplying high-voltage current;
candles.

When the primary circuit is energized, a magnetic field is created in the breaker. The rotation of the distributor interrupts the current in this place, which leads to the disappearance of the magnetic field. At this moment, a signal appears on the secondary winding, which passes to the cylinders.

Photo gallery

1. Scheme of contact SZ

2. Scheme of contactless SZ GAZ-53 with a switch

Successful sparking is ensured by the stable operation of the motor and the appearance of sufficient voltage on the electrodes. The spark power is affected by the size of the gaps between the electrodes and the magnitude of the incoming voltage.

At weak spark or its absence, fuel consumption increases, engine power decreases.

Possible SZ malfunctions: signs and causes

Malfunctions in the SZ are reflected in the power of the power unit, it decreases, and the economical use of fuel.

Can be called the following reasons unstable work SZ on GAZ-53:

Switch overheating or failure. When the switch overheats, the spark disappears and the engine does not start. It becomes possible to start the engine only after it cools down and a spark appears. The coil is also prone to overheating.
breakdown in high voltage wires. This happens if the wire is not held tight enough in the cover of the distributor: the motor will run unstably, intermittently. Breakdown of wires is noticeable in the dark - blue sparks jump.
The cover on the breaker-distributor burned out. Fault can be detected by visual inspection. Burning is possible in the place where the corner with the spring is installed. The cover must be free of defects, must not have potholes, cracks.
The contacts of the distributor slider may burn.
Breakdown of candles.

If the diaphragm makes gaps on the vacuum regulator of the distributor, then a drop in motor power is observed. At the same time, if you sharply gas, then the power unit will choke and may overheat. The distributor rarely fails, most often the cause of its breakdown is wear due to the depleted resource.

Instructions for setting the ignition

The cause of overheating of the motor and a drop in its power may be late ignition. This may manifest as pops during intake manifold. Therefore, you need to know how to set the ignition correctly (the author of the video is Nail Poroshin).

Installation is carried out by labels as follows:

First you need to set the piston on the first cylinder to TDC and align the installation indicator mark with the mark on the pulley crankshaft.
Next, the crankshaft must be turned counterclockwise until the marks 9 on the pointer and the marks on its pulley match.
Then you need to loosen the bolt of the upper corrector plate, thanks to which it is attached to the breaker.
Next, you need to connect one control wire to the car body (ground) and the second to the breaker terminal. After turning on the ignition, the breaker should be slowly turned until the control indicator lights up. This indicates that the contacts have begun to open.
Now you need to tighten the breaker mounting bolt and install the cover and rotor. In the area opposite to that on which the rotor plate was installed, you need to attach a high-voltage wire to the spark plug on the 1st cylinder. The remaining wires are connected to the cylinder candles, according to the order in which they work: 1-5-4-2-6-3-7-8.

It is necessary to set the ignition timing of the GAZ-53 accurately, since with deviations the engine power drops and fuel consumption increases. In addition, burnout of valves, pistons, breakdowns in the cylinder head gasket and other problems associated with detonation are possible.

That's why final adjustment is carried out on a running engine, which warms up to a coolant temperature in the range of 80 - 90 degrees. With the engine running at idle, you need to loosen the fasteners of the distributor with a wrench on "10" so that it can be turned. Slightly turning the distributor counterclockwise, tighten the mounting bolt.

Pressing on the gas, how the power unit works. If you hear the "ringing of fingers", that is, detonation occurs, turn the distributor clockwise to reverse direction. Install by trial and error desired angle lead.

The check is done on a moving vehicle. At stable work power unit adjustment is no longer needed.

Sometimes the distributor is pushed to the extreme position, and the adjustment was not enough. In this case, you need to check the position of the distributor drive relative to the engine.

Checking with the engine off:

First, marks are made on the front crankshaft pulley. They must match on the 1st and 6th cylinders. In order not to make a mistake, it is better to remove the valve cover from the first 4 cylinders and check the valves. With the correct position of the valve marks in the 1st cylinder will be free.
Having removed the distributor, we examine how the drive is installed. If it is located parallel to the motor, then it needs to be replaced or repaired, adjustment, in this case, will not help.
If the position of the drive is incorrect, you need to unscrew the fastening nut and remove the part.
After the drive is fully installed in its place, you need to check that the groove for the distributor runs parallel to the internal combustion engine (in the direction of the car), and a small section of the bushing on the distributor looks at the 4th and 8th cylinders (towards the driver) . Experience must be achieved right position distributor drive.

Conclusion

Ignition adjustment should be carried out until, with a significant load on the engine power unit, only a slight detonation appears. If exhibited early ignition, it threatens breakdown cylinder head gaskets and burning valves and pistons. If the spark jumps later, then the fuel consumption increases, and the motor may overheat. Fine-tuning is done with a stroboscope.

autoclema.com

Ignition installation

The distributor of cars GAZ-53, GAZ-3307 (24.3706) (Fig. 1) is a generator that generates voltage pulses to control the transistor switch and to distribute current pulses high voltage by spark plugs.

The GAZ-53, GAZ-3307 distributor automatically adjusts the ignition timing depending on the engine speed and load. Automatic adjustment of the ignition moment depending on the speed is carried out by a centrifugal regulator, and from the load - by a vacuum machine.

Fig.1. Ignition distributor (distributor) GAZ-53, GAZ-3307

A roller 27 is installed in the housing 1 in two bushings 26. A centrifugal regulator with a rotor 10, on which a magnet 9 is mounted, is mounted on the upper part of the shaft. The top of the body is closed with cover 11, which has leads for high voltage wires from spark plugs and the ignition coil.

Shaft 27 of the ignition distributor GAZ-53, GAZ-3307 is driven by a gear camshaft. The centrifugal ignition timing regulator of the GAZ-53 distributor automatically changes the ignition timing depending on the speed of rotation of the engine camshaft.

Ignition advance mismatch with the speed is usually associated with seizing the weights of the centrifugal regulator or with the weakening of their springs and causes detonation, a decrease in engine power, and an increase in fuel consumption. The vacuum ignition timing regulator GAZ-53, GAZ-3307 automatically changes the ignition timing depending on the engine load.

Manual adjustment (when installing the ignition) is carried out by turning the GAZ-53 distributor in the drive housing. To rotate, loosen the distributor mounting bolt. Turning the housing of the ignition distributor by one division of the scale corresponds to a change in the advance angle by 4 ° (according to the angle of rotation of the crankshaft).

Ignition installation GAZ-53, GAZ-3307

To install the ignition GAZ-53, GAZ-3307 with the distributor removed from the engine and its drive, you must:

Install crankshaft to the position w.m.t. the end of the compression stroke in the first cylinder (according to the marks on the crankshaft pulley and the front cover of the cylinder block); put the distributor drive on the engine; - install the ignition distributor (distributor) GAZ-53; GAZ-3307 for the engine and high voltage wires; set the ignition timing according to the marks on the distributor.

The procedure for connecting high voltage wires from the distributor to the GAZ-53 candles is shown in Fig. 2.

Fig. 2. The procedure for connecting wires to the spark plugs of the ignition distributor GAZ-53, GAZ-3307

A - in front of the car

The ignition timing of the GAZ-53, GAZ-3307 is set after the distributor is installed in place in the following order:

Set the crankshaft to a position where it will go to 4 ° w.m.t. the end of the compression stroke in the first cylinder, which corresponds to the position of the pointer against the fourth risk on the crankshaft pulley;
Loosen the nut of the ignition distributor drive holder;
Remove the cover of the GAZ-53 distributor. Press the slider with your finger against its rotation (to eliminate the gap in the drive), carefully turn the distributor housing (distributor) until the red marks on the rotor and stator align, and in this position fix the drive holder nut.

Setting the ignition moment of a GAZ-53, GAZ-3307 car must be carried out with great accuracy. The presence of even a small inaccuracy causes increased consumption fuel, engine power loss. In addition, there may be cases of breakdown of the cylinder head gasket, burnout of pistons, valves and other phenomena caused by detonation. Therefore, fine-tuning the ignition timing of the GAZ-53, GAZ-3307 is carried out on the road while driving.

This is done in this way: the engine warms up to the temperature of the liquid in the cooling system 80 - 90 ° C. Moving in direct gear on a flat road at a speed of 25 km / h, sharply press the pedal to failure throttle valves and give the car acceleration to 60 km / h. If at the same time a slight and short-term detonation is observed, disappearing at a speed of 45-50 km / h, then the ignition timing is set correctly.

In case of strong detonation, turn the body of the ignition distributor GAZ-5, GAZ-33073 by one division of the octane corrector scale clockwise (each division of the scale corresponds to a rotation of the crankshaft by an angle of 4 °). In the absence of detonation, turn the distributor sensor housing one notch counterclockwise. After correcting the ignition timing, check its correctness by listening to the engine while driving.

You should always adjust the ignition setting of a GAZ-53, GAZ-3307 car, which gives only a slight detonation with a heavy engine load. With early ignition, when a strong detonation is heard, the head gasket can be pierced and the valves and pistons can burn out. With late ignition, fuel consumption rises sharply, and the engine overheats. A more accurate ignition setting is made using a stroboscope.

If suddenly, you did not find something, or you simply do not have time to search, then I recommend that you read the articles in the "Gas Repair" categories. I am sure you will find the answer to your question, and if not, write in the comments your question and I will definitely answer.

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gaz3307.ru

Installation of ignition of cars GAZ-53, GAZ-3307

The ignition system GAZ-53, GAZ-3307 - battery, contactless transistor with a voltage in the primary circuit of 12V, consists of sources electric current, ignition coil, series resistor, switch, ignition distributor, spark plugs, spark plug tips, ignition switch, and low and high voltage wires.

Fig.1. Scheme of the ignition system GAZ-53, GAZ-3307

A - to the starter; 1 - ignition coil; 2 - primary winding; 3 - secondary winding; 4 - accumulator battery; 5 - current indicator; 6 - additional starter relay; 7 - additional resistor; 8 - ignition and starter switch; 9 - noise suppression resistor; 10 - spark plug; 11 - distributor-sensor; 12 - noise suppression resistor of the slider; 13 - distributor winding; 14 - permanent magnet; 15 - switch; R1 - resistor MLT-8.2 kOhm; R2 - resistor MLT-1, R3 - resistor MLT; R4 - resistor MLT-82 kOhm; R5 - MLT-62 Ohm resistor; R6 - MLT-200 Ohm resistor; R7, R8 - resistors MLT-47kOhm; C2 - capacitor K73-17-250V-0D; SZ - capacitor K73-17-4008-1; C4, C5 - capacitors K73-17-250V-0.047 uF; C6 - capacitor K50-29-160V-10; C7 - capacitor KL-2-I20-500V-1000; VI - diodesKDYu2BiliKD4 521A; V2 - diodes KD209A or KD212A; V3 - transistor KT 848 A; V4, V5 - transistors KT630B or KT653B; V7 - diode 102B Reliable and economical operation of the engine depends on the smooth operation of the GAZ-53 ignition system. To eliminate radio interference caused by the ignition system, the high voltage wires have a distributed resistance, and the tips of the candles have suppression resistors. The diagram of the ignition system is shown in Fig.1.

Technical specifications ignition systems for GAZ-53, GAZ-3307 cars

Ignition order GAZ-53 - 1 - 5 - 4 - 2-6 - 3 -7 - 8 Type of ignition distributor (distributor) - 24.3706 Rotation speed of the distributor roller in 1 min with uninterrupted spark formation when working with a B116 ignition coil on a three-electrode spark gap at a spark gap of 7 mm, min-1 - 20 - 2300 Direction of rotation of the ignition distributor shaft (distributor) GAZ-53 - clockwise Ignition coil GAZ-53 - B116 Spark plugs - A11 Spark gap value in candles, mm - 0.8 - 0.95 Additional resistor - 14.3729 Commutator - 13.3734 or 13.3734-01 Candle tip - 35.3707200 Tip resistance, kOhm - 4 - 7 Ignition coil GAZ-53, GAZ-3307 (B 116) is used to convert current low voltage into a high voltage current. The ignition coil GAZ-53, GAZ-3307 (B 116) is a transformer, on the iron core of which the secondary is wound, and on top of its primary winding. The core with windings is installed in a sealed steel case filled with oil and closed with a high-voltage plastic cover. Winding resistance at a temperature of 15 - 35 ° C: primary 0.43 Ohm, secondary 13,000 - 13,400 Ohm.

Maintenance ignition GAZ-53, GAZ-3307

To protect against possible breakdown of the plastic cover, the coil must be cleaned of dirt, dust and oil, check the reliability of fastening of high and low voltage wires. At idle engine the ignition must not be left on in order to avoid overheating of the coil, leading to its failure. The use of other types of ignition coils is unacceptable. The causes of a malfunction of the ignition coil GAZ-53, GAZ-3307 can be: insulation breakdown; interturn circuit; chips and cracks in the plastic cover; cover burnout, ignition coils due to underfilling high voltage wire into the nest. In the ignition coil windings, defects most often appear due to their overheating and operation with increased spark plug gaps. Overheating occurs mainly when the ignition is on and the engine is not running. Before removing the GAZ-53, GAZ-3307 ignition coil for replacement, you should make sure that the wires are connected to the coil terminals in good condition and reliability. The coil should be checked on a special stand together with a transistor switch, an additional resistor and a distributor. A serviceable ignition coil GAZ-53 must ensure uninterrupted sparking on a three-electrode needle spark gap with spark gap in 7 mm from 20 to 2300 min "1 of the distributor roller and an ambient temperature of 25 ° C. If the coil does not meet these requirements, it must be replaced.

Ignition distributor (distributor) GAZ-53, GAZ-3307

The distributor of GAZ-53, GAZ-3307 (24.3706) (Fig. 2) is a generator that generates voltage pulses to control the transistor switch and to distribute high voltage current pulses to spark plugs. The GAZ-53, GAZ-3307 distributor automatically adjusts the ignition timing depending on the engine speed and load. Automatic adjustment of the ignition moment depending on the speed is carried out by a centrifugal regulator, and from the load - by a vacuum machine.

Fig.2. Ignition distributor (distributor) GAZ-53, GAZ-3307

1 - body; 2 - oiler; 3 - weight of the centrifugal machine: 4 - spring of the vacuum machine; 5 - adjusting washer; 6 - vacuum machine; 7 - diaphragm; 8 - magnetic circuit of the rotor; 9 - permanent magnet of the rotor; 10 - rotor; 11 - cover; 12 - noise suppression resistor; 13 - central output; 14 - central contact-resistor; 15 - slider; 16 - felt; 17 - half screen; 18 - screw; 19 - stator winding; 20 - stator; 21 - magnetic circuit of the stator winding; 22-stator support; 23 - ball bearing; 24 - spring of a centrifugal machine; 25 - thrust ball bearing (a thrust washer is installed on some of the sensors); 26 - bushing; 27 - roller; 28 - octane corrector; 29 - thrust washer; 30 - pin; 31 - roller spike In housing 1, a roller 27 is installed in two bushings 26. A centrifugal regulator with a rotor 10, on which a magnet 9 is mounted, is mounted on the upper part of the shaft. 22 with bearing 23. From above, the body is closed with cover 11, in which there are leads for high voltage wires from spark plugs and the ignition coil. Shaft 27 of the ignition distributor GAZ-53, GAZ-3307 is driven from the camshaft gear. The centrifugal ignition timing regulator of the GAZ-53 distributor automatically changes the ignition timing depending on the speed of rotation of the engine camshaft. Ignition advance mismatch with the speed is usually associated with seizing the weights of the centrifugal regulator or with the weakening of their springs and causes detonation, a decrease in engine power, and an increase in fuel consumption. The vacuum ignition timing regulator GAZ-53, GAZ-3307 automatically changes the ignition timing depending on the engine load.

Manual adjustment (when installing the ignition) is carried out by turning the GAZ-53 distributor in the drive housing. To rotate, loosen the distributor mounting bolt.

Non-contact transistor ignition system GAZ-3307.

First of all, let's get acquainted with the ignition system of the GAZ-3307 truck. The GAZ-3307 ignition system is a battery-powered, non-contact transistor with a voltage in the primary circuit of 12V, it consists of sources of electric current, an ignition coil, an additional resistor (if I'm not mistaken where since 2000 they have been produced without an additional resistor), a switch, an ignition distributor, spark plugs, spark plug tips, ignition switch, and low and high voltage wires.

Technical characteristics of the ignition system for GAZ-3307 (GAZ 53) cars

Ignition order GAZ-3307 1 - 5 - 4 - 2-6 - 3 -7 - 8 Ignition distributor type (distributor) - 24.3706 The frequency of rotation of the distributor roller in 1 min with uninterrupted sparking when working with a B116 ignition coil on a three-electrode spark gap with a spark gap of 7 mm, min-1 - 20 - 2300 Direction of rotation of the ignition distributor roller (distributor) GAZ-3307 - clockwise Coil ignition GAZ-3307 - B116 Spark plug - A11 The value of the spark gap in candles, mm - 0.8 - 0.95 Additional resistor - 14.3729 Switch - 131.3734 or 13.3734 candle tip - 35.3707200

Scheme of the ignition system GAZ-3307

And so, as I said in our time, the ignition system of the GAZ-3307 truck has undergone minor changes.

As I already wrote, this happened after 2000, that's about what I'm talking about. I won’t say for sure I’m afraid to make a mistake, but I didn’t have time to google and search for it, and it’s just not particularly interesting. If you are interested, look then share with me too. You can leave a comment.

This applies to transistor switch brands 13.3734 and 131.3734

You see the difference is only one digit, that is, it was 13.3734 before 2000, and they began to produce GAZ-3307 after 2000 with a switch 131.3734. And so there is only one digit and this is one digit, that is, as you noticed, the number 1 removes the GAZ-3307 from the ignition system additional resistor - 14.3729.

That is, simply speaking, the function additional resistor - 14.3729. built into transistor switch 131.3734.

I want to warn you, someone might say "yes, I put brand 13.3734 instead of brand 131.3734 and the machine does not work," I agree with him.

GAZ-3307 will certainly work and will go normally but not far. And why, you ask of course, and you will be right, you need to know Why? Yes, because your ignition coil (reel) will simply burn out.

Why will it happen: The ignition coil, GAZ-3307 (B 116) is a transformer, on the iron core of which the secondary is wound, and on top of its primary winding. The core with windings is installed in a sealed steel case filled with oil and closed with a high-voltage plastic cover.

Operating temperature from -50° C to +80° C. Resistance value at a temperature of 25°C: primary winding (0.65 + 0.07) Ohm, secondary winding (18 + 1.8) kOhm.

Developed secondary voltage 18 kV max. Supply voltage 12 V. Weight 0.95 kg. At work ignition coil B-116 additional resistor-14.3729. The resistor heats up during operation, this is normal. The resistor, when the starter is turned on (when the engine is started), is shunted and the coil is fed with full voltage (more precisely, the onboard, squandered starter), this facilitates starting.

After turning off the starter, it again takes up "work" additional resistor-14.3729. And now put yourself such a picture of the GAZ-3307, let's say after the year 2000, of course, there is ignition without additional resistor-14.3729 And ignition coil B-116 And transistor switch 131.3734 , and you took and delivered transistor switch 13.3734 , and what’s next for the GAZ-3307, of course, it will start, moreover, it will go normally (as I stated above), the coil will burn out not far. That is, lower onboard voltage, for the ignition coil, no longer to anyone.

And as we already know ignition coil B-116 powered by low voltage additional resistor-14.3729 or with the added voltage reduction function in transistor switch brand 131.3734.

And in the aftermath ignition coil B-116 just burn out.

I can't stop mentioning this moment. There is also a coil ignition B-114

As you can see, it doesn't look any different from B-116(some put it) it also fits the GAZ 3307, but I personally do not advise you to put it. GAZ-3307, of course, will work (I checked it myself, I had to with a coil ignition B-114 get home when B-116 burned out) If you put it on and drive, you may not feel the difference, but in the end it will affect fuel consumption (increase) and of course the car's traction (decrease), the engine will work unstably. Just ignition coil B-114 designed for GAZ-53 with contact transistor ignition system

Scheme of connection of the ignition system of a new sample. Switch 131.3734.

1. Candles; 2. Anti-interference resistance; 3. Distributor; 4. Switch; 5. Ignition coil; 6. Generator; 7. Fuse; 8. battery; 9. Ignition lock.

Scheme of switching on the switch 131.3734 as part of the ignition system:

Wiring diagram of the old-style ignition system. Switch 13.3734.

1. Distributor; 2. Switch; 3. Additional resistor (variator); 4. Ignition coil.

You can familiarize yourself with the contact-transistor ignition system in this article:

Contact-transistor ignition system GAZ-53.

And so, my friends, you and I, as I believe, have completed our acquaintance with the ignition system of the GAZ-3307 (GAZ-53) truck. If you suddenly have any questions, you can leave comments.

Now let's figure out what are the reasons lack of spark.

If suddenly, you didn’t find something, or you simply don’t have time to search, then I recommend that you read the articles in the categories " GAS repair". I'm sure you will find the answer to your question, and if not, write in the comments the question you are interested in, I will definitely answer.

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12.6. GAS. Operation, maintenance and repair of GAZ-53A and GAZ-66 vehicles. Breaker-distributor. Maintenance and malfunctions

Fig 142. Breaker-distributor P13-B disassembled:
1 - cover; 2 - rotor; 3 - fixed contact post; 4 - lever with a pillow; 5 - contacts; 6 - felt with a supply of lubricant; 7 - fixed disk; 8 - cam with bushing and plate; 9 - shaft; 10 - weight; 11 - weight plate; 12 - spring; 13 - body; 14 - latch; 15 - bearing; 16 - octane corrector plate; 17 - bushing; 18 - pin; 19 - octane corrector nut; 20 - oiler; 21 - vacuum regulator; 22 - spring; 23 - fitting; 24 - thrust; 25 - locking spring; 26 - capacitor.

On GAZ-53A and GAZ-66 cars, the P13-B breaker-distributor is used (Fig. 142), and on the GAZ-66-03 P105 car. The breaker-distributor roller is driven through a gear from the camshaft, which rotates clockwise (when viewed from the side of the cover).
The breaker - the distributor has centrifugal and vacuum regulators of an advancing of ignition.
Centrifugal ignition timing controller. The ignition timing during the operation of the centrifugal regulator varies depending on the number of revolutions of the breaker-distributor roller.
The discrepancy between the ignition timing and the number of revolutions of the breaker-distributor shaft is usually associated with jamming of the weights of the centrifugal regulator or with the weakening of their springs, causing detonation, a decrease in engine power, and an increase in fuel consumption.

Vacuum ignition timing controller. Job Description vacuum regulator ignition timing:

Failure of the vacuum regulator or malfunction of it causes an increase in fuel consumption, especially when driving with a partial load.

MAINTENANCE OF THE BREAKER-DISTRIBUTOR

The breaker-distributor must be periodically lubricated, check and adjust the gap between the breaker contacts, monitor the condition of the distributor parts and their cleanliness.
A loosely fixed breaker-distributor (can be turned by hand) must be securely fastened with a fastening nut and tightened with an octane-corrector nut, having previously checked the correct installation of the ignition and, if necessary, install the ignition. Carefully wipe the cover of the breaker-distributor from the outside and from the inside with a cloth soaked in clean gasoline.
Carefully check for cracks in the cover and rotor, or traces of spark breakdown and significant burning or corrosion of the cover electrodes in the current-carrying plate of the rotor.
The burning of the end surfaces of the current-carrying plate of the rotor and the electrodes of the cover indicates an excessively large radial gap between the current-carrying plate and the electrodes. In this case, the cover or rotor must be replaced.
If the cover or rotor does not show signs of damage, carefully clean (wipe) the burnt places on the electrodes of the cover and the rotor plate with a cloth lightly moistened with pure gasoline or refined carbon tetrachloride.
clean up specified places a file is impossible, as this leads to an increase in the gaps between the current-carrying plate of the rotor and the electrodes of the cover and to interruptions in the ignition.
The high voltage wires must be firmly inserted into the sockets of the cover.
Burning and corrosion on the inner surface of the electrode (in the sockets of the cover) indicate that the wire does not reach the electrode or is poorly held in the socket by the spring contact tip. In this case, clean the spring tip and insert it into the socket until it stops. If the wire is weakly held in the socket, spread the petals of the spring tip.
It should be noted that the occurrence of an additional spark gap in the high voltage circuit as a result of a loose fit of the high voltage wires in the sockets of the cover can lead to burnout of the cover plastic, failure of the ignition coil, as well as a violation
normal engine operation. inner surface breaker-distributor, if necessary, purge compressed air. Periodically check and tighten the fastening of the pipeline of the vacuum regulator of the breaker-distributor.
Check that there is no binding, the central contact must move freely in the socket of the cover.
When lubricating the breaker-distributor, be careful not to get oil on the breaker contacts, since the ingress of oil greatly increases the burning of the contacts and shortens their service life. If oil or dirt gets on the breaker contacts, be sure to wipe the contacts with suede soaked in clean gasoline.
Contacts should be cleaned only if their condition causes interruptions in the operation of the ignition system and no more often than after 12,000 km of the car's run. When cleaning the contacts, remove the tubercle on one of them and somewhat smooth the surface of the other, on which a recess (crater) is formed.
This recess is not recommended to be removed completely. Clean the contacts with an abrasive clean tool.
To ensure that the contact surfaces are strictly parallel, it is recommended to press the lever with your finger when stripping.
Do not clean the contacts with an emery cloth, needle file and a coin. During operation, it is allowed to clean (lighten) the contacts using a plate mounted on the probe, which is attached to the car. After stripping the contacts, blow the breaker panel with air, wipe the contacts with chamois leather slightly moistened with clean gasoline, and set the normal gap between the contacts.
In case of significant burning or wear of the breaker contacts, replace the stand and the breaker lever.
An abnormal gap between the contacts of the breaker, the presence of burning or contamination of the surface of the contacts causes interruptions in the operation of the ignition system and makes it difficult to start the engine, especially in the cold season.
The condition of long and reliable operation interrupter is the parallelism of the contacts and their good fit to each other over the entire surface. It should be remembered that the tungsten contacts of the interrupter are of small thickness, and therefore frequent cleaning of them inevitably leads to a reduction in the service life of the contacts.
Check the spring tension of the breaker lever.
Periodically, it is recommended to remove the breaker-distributor and check the operation of the breaker-distributor, centrifugal and vacuum regulators at the stand type SPZ-6 of the GARO trust.
In the absence of a stand, check the centrifugal regulator for seizing. The easiest way to do this is to check whether it is freely returned to initial position the rotor of the breaker-distributor, if it is turned by hand relative to the fixed roller, and then released.
Breaker-distributor with faulty regulators to be repaired or replaced. Repair of regulators consists in the replacement of worn or defective parts with a mandatory adjustment after that, ensuring that the characteristics of the regulators correspond to the values \u200b\u200bspecified above.
The centrifugal regulator is regulated by changing the tension of the springs of 12 weights (see Fig. 142) by bending the racks on which it is fixed.
The vacuum regulator is regulated by changing the number of shims placed between the spring and the nut of the machine body.
Adjusting the gap between the contacts of the breaker and setting the ignition. The reliability of the ignition system primarily depends on the gap between the contacts of the breaker and on the cleanliness of the contacts.
To adjust the gap between the breaker contacts, you must:

release the spring holders and remove the cover of the breaker-distributor, and for the shielded breaker-distributor, first remove the screen;
rotating starting handle crankshaft of the engine, install the cam so that there is a maximum gap between the contacts;
check the gap between the contacts with a feeler gauge. The probe should enter the gap without depressing the lever. The gap should be within 0.30 - 0.40 mm. If the gap is greater or less than specified, it is necessary to loosen the locking screw of the fixed contact rack and, by turning the adjusting eccentric screw, set the normal gap;
tighten the locking screw and recheck the gap between the contacts. When checking the breaker-distributor on the stand, instead of measuring the gap, it is necessary to measure the angle of rotation of the breaker-distributor shaft, at which the contacts are in the closed state. It should be within 28 - 33 °;
install and secure the cover of the breaker-distributor.

The procedure for installing the ignition is as follows:

Remove the cover of the breaker-distributor and the rotor, check the gap between the breaker contacts (adjust the gap if necessary). Put the rotor back in place.
Unscrew the spark plug of the first cylinder.
Having closed the opening of the spark plug of the first cylinder with your finger, turn the crankshaft of the engine with the starting handle until the air begins to escape from under the finger. This will happen at the beginning of the compression stroke in the first cylinder of the engine.
After making sure that the compression has begun, carefully turn the engine shaft until the pointer coincides with the mark on the crankshaft pulley on the GAZ-53A car (Fig. 143) and with the ball minted in the flywheel on the GAZ-66 and GAZ-66-03 cars (Fig. 144).
Make sure the rotor is against the inner contact of the cover, connected to the wire going to the spark plug of the first cylinder.
Use the fine tuning nuts to set the octane corrector scale to zero division.
Loosen the nut of the breaker-distributor column and turn the breaker-distributor housing slightly clockwise so that the breaker contacts close.
Connect one of the wires of the portable lamp to the low voltage terminal on the coil (to which the wire leading to the breaker is attached), and the second to the engine ground. You can also use the engine compartment lamp for this purpose.
Turn on the ignition and carefully turn the breaker housing counterclockwise until the bulb flashes.
You need to stop the rotation of the breaker exactly at the moment the light bulb flashes. If this fails, repeat the operation.
While holding the breaker body from turning, tighten the nut of the breaker column, put the distributor cap and the central wire in place.
Check the correct connection of the wires from the spark plugs, starting with the first cylinder. The wires must be connected in the order 1, 5, 4, 2, 6, 3, 7, 8, counting clockwise.

Rice. 143. Location of the V.M.T mark on the engine of a GAZ-53A car

Rice. 144. Location of the V.M.T mark on the engine of the GAZ-66 car

After each setting of the ignition, adjusting the gap of the contacts of the breaker, as well as changing gasoline, the setting of the moment of ignition of the combustible mixture should be clarified by listening to the operation of the engine while the car is moving.
It is necessary to bring the ignition setting to the octane corrector without loosening the column mounting nuts. To do this, just turn the nuts manual adjustment(unscrewing one and wrapping the other).

Moving the arrow by one division of the octane corrector scale corresponds to a change in the ignition setting by 2 °, counting along the crankshaft.
When turning the breaker housing counterclockwise, the ignition setting will be earlier, clockwise, later. Check the operation of the engine when fine-tuning the ignition installation as follows. Warm up the engine to a temperature of 80 - 90°C. Moving in direct gear on a flat road at a speed of 25 - 30 km / h, give the car acceleration by sharply pressing the throttle control pedal to failure. If at
In this case, a slight and short-term detonation will be observed, then the ignition timing is set correctly.
In case of strong detonation, turn the body of the breaker-distributor one division of the octane-corrector scale clockwise. In the absence of detonation, turn the housing of the breaker-distributor one notch counterclockwise.
You should always work with an ignition setting that gives only light detonation at a higher engine load. If the ignition is too early, when a strong knock is heard, the cylinder head gasket may be punctured and the valves and piston may burn out. If the ignition is too late, fuel consumption increases sharply and the engine overheats.

FAULTS OF THE BREAKER-DISTRIBUTOR AND WAYS TO ELIMINATE THEM

Causes of the malfunction	Solutions
Interruptions in the ignition system or no spark
Burning contacts	Clean the contacts and adjust the gap between the contacts
Spring release	Measure spring force and adjust tension
Breakage of the conductor connecting the terminal to the moving contact
Broken conductor between the movable breaker plate and the fixed one	Check with a test lamp and repair the damage
Breakdown or contamination of the rotor and cover	Wipe the rotor and cover thoroughly. The rotor and cover with breakdowns, cracks and burnouts must be replaced
Large radial backlash of the roller of the breaker-distributor	If the radial play of the roller of the breaker-distributor is more than 0.2 - 0.3 mm, then it is necessary to replace the liners
Capacitor failure	Check the health of the capacitor
Severe engine knock when depressing the throttle pedal quickly
Ignition too early for this type of fuel	Reduce the lead angle with an octane corrector
Increased fuel consumption and reduced engine power
Seizure of weights of the centrifugal regulator of an advancing of ignition	Check on the stand and repair the damage
Increased fuel consumption when driving without a load
Malfunction of the vacuum regulator of an advancing of ignition	Check the tube connecting the regulator to the carburetor. Remove the breaker-distributor and check if there is gasoline in the regulator cavity, check the regulator for tightness

Ignition system for GAZ-53, 3307 cars

The ignition system GAZ-53, GAZ-3307 - battery, non-contact transistor with a voltage in the primary circuit of 12V, consists of sources of electric current, an ignition coil, an additional resistor, a switch, an ignition distributor, spark plugs, candle tips, an ignition switch and low and high voltage.

Fig.1. Scheme of the ignition system GAZ-53, GAZ-3307

A - to the starter; 1 - ignition coil; 2 - primary winding; 3 - secondary winding; 4 - battery; 5 - current indicator; 6 - additional starter relay; 7 - additional resistor; 8 - ignition and starter switch; 9 - noise suppression resistor; 10 - spark plug; 11 - distributor-sensor; 12 - noise suppression resistor of the slider; 13 - distributor winding; 14 - permanent magnet; 15 - switch; R1 - resistor MLT-8.2 kOhm; R2 - resistor MLT-1, R3 - resistor MLT; R4 - resistor MLT-82 kOhm; R5 - MLT-62 Ohm resistor; R6 - MLT-200 Ohm resistor; R7, R8 - resistors MLT-47kOhm; C2 - capacitor K73-17-250V-0D; SZ - capacitor K73-17-4008-1; C4, C5 - capacitors K73-17-250V-0.047 uF; C6 - capacitor K50-29-160V-10; C7 - capacitor KL-2-I20-500V-1000; VI - diodesKDYu2BiliKD4 521A; V2 - diodes KD209A or KD212A; V3 - transistor KT 848 A; V4, V5 - transistors KT630B or KT653B; V7 - diode 102B

Reliable and economical operation of the engine depends on the smooth operation of the GAZ-53 ignition system. To eliminate radio interference caused by the ignition system, the high voltage wires have a distributed resistance, and the tips of the candles have suppression resistors. The diagram of the ignition system is shown in Fig.1.

Technical characteristics of the ignition system for cars GAZ-53, GAZ-3307

Ignition order GAZ-53 - 1 - 5 - 4 - 2-6 - 3 -7 - 8
Ignition distributor type (distributor) - 24.3706
The frequency of rotation of the distributor roller in 1 min with uninterrupted spark formation when working with a B116 ignition coil on a three-electrode spark gap with a spark gap of 7 mm, min-1 - 20 - 2300
The direction of rotation of the ignition distributor roller (distributor) is clockwise
Ignition coil - B116
Spark plugs - A11
The value of the spark gap in candles, mm - 0.8 - 0.95
Additional resistor - 14.3729
Switch - 13.3734 or 13.3734-01
Candle tip - 35.3707200
Tip resistance, kOhm - 4 - 7

The ignition coil GAZ-53, GAZ-3307 (B 116) is used to convert low voltage current into high voltage current.

The ignition coil B 116 is a transformer, on the iron core of which the secondary is wound, and on top of its primary winding. The core with windings is installed in a sealed steel case filled with oil and closed with a high-voltage plastic cover.

Winding resistance at a temperature of 15 - 35 ° C: primary 0.43 Ohm, secondary 13,000 - 13,400 Ohm.

Maintenance of ignition GAZ-53, GAZ-3307

To protect against possible breakdown of the plastic cover, the coil must be cleaned of dirt, dust and oil, check the reliability of fastening of high and low voltage wires.

When the engine is not running, the ignition must not be left on to avoid overheating of the coil, leading to its failure. The use of other types of ignition coils is unacceptable.

The causes of a malfunction of the ignition coil can be: insulation breakdown; interturn circuit; chips and cracks in the plastic cover; burnout of the cover, ignition coils due to a lack of high-voltage wire in the socket.

In the ignition coil windings, defects most often appear due to their overheating and operation with increased spark plug gaps. Overheating occurs mainly when the ignition is on and the engine is not running.

Before removing the GAZ-53, GAZ-3307 ignition coil for replacement, you should make sure that the wires are connected to the coil terminals in good condition and reliability. The coil should be checked on a special stand together with a transistor switch, an additional resistor and a distributor.

A good ignition coil should provide uninterrupted sparking on a three-electrode needle gap with a spark gap of 7 mm from 20 to 2300 min "1 of the distributor roller and an ambient temperature of 25 ° C. If the coil does not meet these requirements, it should be replaced.

Ignition distributor (distributor) GAZ-53, GAZ-3307

The distributor of GAZ-53, GAZ-3307 (24.3706) (Fig. 2) is a generator that generates voltage pulses to control the transistor switch and to distribute high voltage current pulses to spark plugs.

The distributor automatically adjusts the ignition timing depending on engine speed and load. Automatic adjustment of the ignition moment depending on the speed is carried out by a centrifugal regulator, and from the load - by a vacuum machine.

Fig.2. Ignition distributor (distributor) GAZ-53, GAZ-3307

A roller 27 is installed in the housing 1 in two bushings 26. A centrifugal regulator with a rotor 10, on which a magnet 9 is mounted, is mounted on the upper part of the shaft. .

From above, the case is closed with cover 11, in which there are leads for high voltage wires from spark plugs and the ignition coil. Shaft 27 of the ignition distributor is driven by the camshaft gear.

The centrifugal ignition timing regulator of the GAZ-53 distributor automatically changes the ignition timing depending on the speed of rotation of the engine camshaft.

The vacuum ignition advance controller automatically changes the ignition timing depending on the load on the engine.

Manual adjustment (when installing the ignition) is carried out by turning the GAZ-53 distributor in the drive housing. To rotate, loosen the distributor mounting bolt.

Turning the housing of the ignition distributor by one division of the scale corresponds to a change in the advance angle by 4 ° (according to the angle of rotation of the crankshaft).

Ignition installation GAZ-53, GAZ-3307

To install the ignition GAZ-53, GAZ-3307 with the distributor removed from the engine and its drive, you must:

Set the crankshaft to the top dead center position. the end of the compression stroke in the first cylinder; put the distributor drive on the engine;

Install the ignition distributor on the engine and high voltage wires; set ignition timing.

The procedure for connecting high voltage wires from the distributor to the candles is shown in Fig. 3.

Fig.3. The procedure for connecting wires to the spark plugs of the GAZ-53, GAZ-3307 ignition distributor

A - in front of the car

The ignition timing of the GAZ-53, GAZ-3307 is set after the distributor is installed in place in the following order:

Set the crankshaft to a position where it will go to 4 ° w.m.t. the end of the compression stroke in the first cylinder, which corresponds to the position of the pointer against the fourth risk on the crankshaft pulley;

Loosen the nut of the ignition distributor drive holder;

Remove distributor cap. Press the slider with your finger against its rotation (to eliminate the gap in the drive), carefully turn the distributor housing (distributor) until the red marks on the rotor and stator align, and in this position fix the drive holder nut.

Setting the ignition moment of a GAZ-53, GAZ-3307 car must be carried out with great accuracy. The presence of even a small inaccuracy causes increased fuel consumption, a drop in engine power.

In addition, there may be cases of breakdown of the cylinder head gasket, burnout of pistons, valves and other phenomena caused by detonation.

Therefore, the ignition timing is fine-tuned on the road while driving. This is done in this way: the engine warms up to the temperature of the liquid in the cooling system 80 - 90 ° C.

Moving in direct gear on a flat road at a speed of 25 km / h, sharply press the throttle pedal to failure and let the car accelerate to 60 km / h.

If at the same time a slight and short-term detonation is observed, disappearing at a speed of 45-50 km / h, then the ignition timing is set correctly.

In the absence of detonation, turn the distributor sensor housing one notch counterclockwise. After correcting the ignition timing, check its correctness by listening to the engine while driving.

You should always adjust the ignition setting, which gives only a slight detonation when the engine is under heavy load. With early ignition, when a strong detonation is heard, the head gasket can be pierced and the valves and pistons can burn out.

With late ignition, fuel consumption rises sharply, and the engine overheats. A more accurate ignition setting is made using a stroboscope.

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Maintenance of the fuel system of the D-245 diesel engine

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The ignition setting must be done with great accuracy, since even with small errors in the installation, fuel consumption increases sharply, and engine power decreases. In addition, there may be cases of breakdown of cylinder head gaskets, burnout of valves, piston bottoms,

jumpers between adjacent compression chambers in the head, etc. phenomena caused by detonation.

The opening of the current by the interrupter when setting the ignition should occur on the GAZ-51 and ZIM-12 engines at a time corresponding to top dead point, the compression stroke in the first cylinder, and on the M-20 and GAZ-69 engines, not reaching it by 4 °. Accordingly, the rotor must be located against the cover electrode connected to the wire going to the spark plug of the first cylinder.

If oil pump and the distributor were removed from the engine (for example, when repairing or replacing), then in order to be able to install the ignition, they must be correctly installed in their places.

The procedure for installing an oil pump on the engine is described in the "Lubrication System" section of Chapter I when describing the oil pump.

To install the ignition distributor on the engine, you must:

a) set the engine crankshaft to the top dead center position of the compression stroke in the first cylinder;

b) make sure with the help of the mandrel shown in fig. 160 a that the oil pump is installed correctly. In this case, the pointer of the mandrel, inserted all the way into the hole for the distributor, should be directed vertically upwards, as shown in Fig. 160 b, with a deviation from the specified position of not more than 5 ° in any direction;

c) install the protrusion on the distributor shaft of the GAZ-51 and ZIM-12 engines so that it is perpendicular to the plane passing through the axes of the distributor shaft and the holes in the plate for attaching the distributor to the block (Fig. 161 a), and on the distributor of engines M- 20 and GAZ-69 so that it is in a plane parallel to the plane passing through the axis of the distributor shaft and the center of the swivel of the octane corrector rod with the bottom plate, and would be shifted towards this rod (Fig. 161 b);

In this case, the current-distributing contact of the distributor rotor must be turned towards the cover electrode connected to the wire going to the spark plug of the first cylinder;

d) carefully insert the distributor into the block so that the hole or the middle of the arc slot in the lower mounting plate of the octane corrector, intended for the screw fastening the distributor to the block, would be located against the corresponding threaded hole in the block boss.

When installing the distributor, it is necessary to ensure that its shank does not touch the walls of the hole in the block, and does not turn into its body. In this case, the protrusion on the distributor shank must fall into the slot on the oil pump shaft;

e) insert and tighten the screw that secures the lower mounting plate of the distributor to the block boss. To install the ignition, you should:

a) adjust the gap between the contacts of the distributor breaker, as indicated above;

b) install the crankshaft in a position corresponding to the top dead center compression stroke in the first cylinder (on GAZ-51 and ZIM12 engines) or not reaching it by 4 ° (on M-20 and GAZ-69 engines);

c) disconnect the tube of the vacuum regulator; d) remove the distributor cover and make sure that the rotor is against the electrode in the cover connected to the wire going to the spark plug of the first cylinder;

e) after making sure that the engine compartment lamp is in good condition (turning it on and off), remove the end of its wire from the coupling and connect it with an additional piece of wire to the low voltage terminal of the induction coil to which the distributor breaker wire is connected, and turn the lamp lever to on position;

f) set the arrow of the octane-corrector scale against the "O" division. This is done for distributors equipped with a device for smooth adjustment of the octane-corrector by rotating two nuts intended for this purpose, which, after setting the arrow to "O", should be carefully locked by tightly wrapping by hand. For distributors of an earlier release, without the specified device, the arrow is set to "O" by turning the distributor body directly by hand, with a preliminary loosening of the screw securing the installation clamp to the octane corrector plate, which, after setting the arrow to "O", should be tightened again to fix the arrow and the distributor housing in this position;

g) turn on the ignition and, without violating zero installation octane corrector, carefully turn the distributor housing clockwise so that the breaker contacts are closed, then slowly turn the housing counterclockwise until the light flashes, which will correspond to the moment the breaker contacts start opening. You need to stop the rotation of the distributor exactly at the moment the light bulb flashes. If this fails, the operation must be repeated by turning the distributor housing to its original position.

When setting the moment of the beginning of the opening of the contacts, lightly press the distributor rotor with your finger, trying to turn it counterclockwise (that is, against the direction of rotation) in order to select the side clearance in the distributor drive;

h) while holding the distributor body from turning, fix its position in one way or another (depending on the design of the octane corrector);

i) connect the tube of the vacuum regulator, put the cover of the distributor and the central wire in place. Check the correct connection of the wires from the candles to the distributor, starting with the first cylinder. They, counting clockwise, must be connected in the following order: 1-5-3-6-2-4 (on GAZ-51 and ZIM-12 engines) and 1-2-4-3 (on M-20 engines and GAZ-69);

j) put the hatch cover of the ignition installation in its place on the clutch housing and connect the wire of the engine compartment lamp to the coupling (in its original place).

The final check and fine-tuning of the ignition setting by listening to the operation of the engine while the car is moving is carried out using an octane corrector, the movement of the arrow of which, and with it the distributor housing, by one division of the scale corresponds to a change in the setting of the clamp -

ganiya 2 degrees, counting on the crankshaft.

When the distributor housing is turned clockwise, the ignition setting will be later; when turning counterclockwise - earlier.

Checking the operation of the engine during the final fine-tuning of the ignition is carried out as follows:

a) warm up the engine to a temperature of 70-80°C;

b) moving in direct gear on a flat road at the speed indicated in Table. 38, give the car acceleration by sharply pressing the accelerator pedal. If at the same time slight and short-term detonation is observed (mistaken by drivers for the "knock" of fingers), the ignition timing is set correctly. In case of strong detonation, turn the distributor housing one division of the octane-corrector scale clockwise, and in the absence of detonation - one division counterclockwise;

c) after such an adjustment, it is necessary to check the ignition setting again in the manner indicated above.

You should always work with an ignition system that, when the engine is heavily loaded, gives only a slight, quickly disappearing detonation. Ignition too early, when constant detonation is heard, is very harmful to the engine, as it reduces its durability and can lead to emergency breakdowns. If the ignition is too late, there is a loss of throttle response, fuel consumption rises sharply, the engine overheats (especially the exhaust manifold).

In operation, fine-tuning the ignition setting on the move of the car should be done every time after adjusting the gap in the breaker, after installing the ignition and after changing the grade of gasoline.