Wiring IZH Planet 4: design changes

While maintaining much of the continuity with previous models, the IZH Planet 4 motorcycle featured new design changes. And first of all, this is 12 volt equipment, which previously appeared on two-cylinder Jupiter models.

New items also include improved appearance, European lighting technology and a new ignition switch.

Original color wiring diagram for IZH Planet 4

Determining why the ignition coil heats up

The main function of the coil is to convert low voltage voltage, which comes from a generator or battery, into high voltage. There is a generation of high-voltage electrical pulses on the candles. The ignition coil connection diagram provides a certain operating mechanism: when the starter is turned on, thanks to the contact disk, an additional resistance is turned on, this leads to an increase in the current passing through the primary winding, and, as a result, the voltage of the secondary winding increases, which contributes to the reliable ignition of the working mixture.

Malfunctions of the ignition coil can be noticed by the following symptoms. First of all, if it has a high temperature when the engine is off. The cause of this symptom may be turning the key to the active position for a fairly long period with the engine turned off. The next alarming sign is a short circuit, when the engine does not start at all, resulting in a smell of burnt insulation and strong heating of the lock, as well as the starter. In this case, repair and replacement of the ignition coil is necessary.

Unstable operation of the car also helps to understand that diagnostics are urgently needed. It begins to twitch when driving at speeds exceeding 60 km/h, and during a long stop, for example in a traffic jam, the spark may disappear altogether, then the ignition coil should be checked as soon as possible.

Help for owners of IZH Planet 4

The motorcycle left a good memory of itself among lovers of two-wheeled vehicles. Many of them willingly share tips on restoring and remaking their “iron horses.”

Electrical wiring diagram redrawn by motorcycle “fans” (from the black and white factory one)

Communication on the following topics is especially relevant:

1. Modernization of the ignition system;
2. Installation of alloy wheel rims;
3. Modernization of the instrument panel;
4. Troubleshooting electrical systems;
5. Installing an alarm system on a motorcycle and altering the wiring;
6. Converting the motorcycle electrical circuit to work without a battery;
7. Interchangeability of electrical components and compatibility with other brands of motorcycles, for example, with Ural motorcycle wiring diagrams.

How to check the ignition coil - basic methods

In principle, you can determine the cause yourself, since checking the functionality of the ignition coil is quite simple. To do this you need to remove it. Depending on the car model, you should look for it in the engine area, namely the cylinder block. In order not to harm the electrics, disconnect the negative cable from the battery and the connector on the coil. Next, you need to sketch out on paper exactly how it was installed and, of course, connected. The ones that interest you most are the high-voltage wires; their diagram is extremely important; after sketching it, remove their terminals from the coil.

All that remains is to unscrew four bolts and the part is removed. Then carry out a visual inspection for defects and chips; there should be none. Also clean its body from dirt, because it contributes to the occurrence of large voltage leaks. In order to check the bobbin for breaks, you need to know how to ring the ignition coil; for this you only need an ohmmeter (one of its terminals is connected to the winding input, the second to the output). First ring the primary and then the secondary windings. The resistance on the first should be much lower than on the second.

There is another way to check the ignition coil if the previous methods did not reveal any malfunctions. In this case, it is necessary to connect the primary winding of the bobbin to a DC source (12 V), connecting it to the buttons, they are designed for a current of 20 V. In parallel, connect a capacitor with the same capacitance as in the ignition system. A candle is connected to the second winding, and the source is quickly turned on several times. The resulting crackling indicates the presence of breakdowns. Thus, there is nothing difficult about how to check the serviceability of the ignition coil; the main thing is to monitor its condition, since any malfunctions can lead to very negative consequences. Repair consists of restoring the winding or completely replacing the part; it is inexpensive, fast and reliable.

• Alekhandro_Izyumskiy
• 19 November 2012, 19:10
• v

• Dionisiy_Polhovskiy
• November 20, 2012, 20:49
• v

Features of electrical equipment

The wiring diagram of IZH Planet 4 is almost completely copied from the Jupiter model that was the first to appear on the factory assembly line.

The only differences are that:

1. The Planet family has one working cylinder, and accordingly the ignition system is designed to ensure its operation;
2. The IZ Jupiter family, unlike the Planet, has 2 working cylinders; accordingly, the wiring diagram has additional repeating elements.

For reference: the possibility of operating a motorcycle with a trailed sidecar is also taken into account. The wiring diagram on IZH Planet 4 has a connector for connecting the right turn signal repeater and side lights.

Headlight

IZH Planet 4 is equipped with more advanced lighting devices:

1. Headlight type "European beam" FG137V with glass with an asymmetrical pattern;
2. Low beam mode with lamp A12-45 + 40 W;
3. Modern direction indicators type 16.3726 (lamp power - 25 W).

Photo of IZH Planet 4 model 1986

Thanks to the modernization of the lighting system, as well as the configuration of the motorcycle:

1. battery 6MTS-9;
2. high power alternating current generator 100 W,

The illumination of the road in the flow of traffic has significantly improved, and traffic on public roads has become safer. At the same time, the price of the motorcycle did not change significantly, which brought its sales to a new level of popularity.

Contactless ignition system

The motorcycle used a new contactless ignition system, the operating principle of which was based on the following operating algorithm:

1. The generator rotor generates pulses when rotating;
2. The storage capacitor is charged through diodes (in the diagram below indicated as VI, V5), as well as through a limiting resistor (R1);
3. Passing through the diode (V6), the electrical signal from the sensor winding (3) enters the thyristor (V4);
4. After it opens, the charged capacitor (C1) transfers the accumulated charge to the ignition coil (primary winding - 4);
5. Under its influence, a high voltage pulse is induced in the secondary winding;
6. Through the high-voltage wire, the central electrode of the spark plug receives a charge;
7. A spark between the electrodes ignites the air-fuel mixture in the motorcycle engine cylinder.

The factory instructions contain the original diagram of the contactless ignition system

The electrical wiring of the IZH Planet 4 motorcycle, due to the peculiarity of the contactless ignition system, has differences in the layout of the main components:

1. The electronic unit of the stabilizer and ignition system is placed in a single housing;
2. It is equipped with two plug connectors;
3. In order to increase reliability, the block is filled with polyurethane foam (non-separable version);
4. Its operating parameters are designed to provide a light signal circuit voltage in the range of 11.5 – 14.5 V.

In addition, the use of a 12-volt circuit led to the division of the ignition system into three electrical circuits that differ in voltage levels:

1. A high-voltage circuit consisting of an ignition coil, a spark plug, a spark plug tip and a high-voltage wire;
2. Storage capacitor charging circuit, consisting of a charging winding, connecting wires with plug connectors, BCS and the primary winding of the ignition coil;
3. The sensor circuit, consisting of its winding, connecting wires and plug connectors.

Generator IZH Planet 4

A more advanced generator began to be installed on the new model of the Izhevsk Motor Plant, capable of serving the increased needs of the electrical equipment system, in contrast to the wiring diagram of the IZH Planet 3.

Original factory circuit diagram of the IZH Planet 4 motorcycle generator

Among the design features it is worth highlighting:

1. Eight coils placed in the stator slots;
2. Serial connection diagram;
3. Coating of coil windings with insulating varnish;
4. Original fastening to the stator, made using washers and bent petals.

For reference: The rotor is made in a traditional manner, has the design of an eight-pole magnet placed in a special magnetic alloy. Installed on the cone of the right axle and secured with a segment key and an M7 bolt. The generator stator is located under the cover on the right side of the engine and is secured with three bolts.

To identify faults with your own hands, you need an ohmmeter or a universal tester, which can be used to measure the resistance of the windings:

1. If the values ​​of the measured resistances differ significantly, it is necessary to inspect the generator stator to detect broken winding leads;
2. The reason for unstable operation may also be their short circuit. If possible, identified faults are eliminated by soldering.

System assembly and installation

The contacts in the breaker, the capacitor, the ignition bobbins and the armor wires, which are part of the previous ignition device, are probably eliminated. The switch should be installed in the glove compartment on the right, and the ignition coil directly under the tank. There are no gaps for fastening on the reel, which means it can be attached using a thick layer of adhesive tape. The standard bolt is also eliminated along with other parts.

In place of the bolt, install a pin of the specified size and put on a washer. Then, the rotor is tightened with a nut located at its end. The hall sensor is attached to the stator by any means. The basic rule when installing it is to set the optimal cross-sectional distance of the modulator and the ratio of the radius and line of symmetry.

When the hall sensor can be secured, we apply the modulator. It should fit into the hole made in the sensor. In most situations, there is a discrepancy between the sizes, so it is necessary to place washers on the stud. If you manage to maintain the required gap, it is recommended to install an engraver and tighten the modulator with a third-party nut.

Differences from the second Planet

For many modern citizens, the information that domestic motorcycle manufacturers worked tirelessly to improve their models in an era of total shortages may come as a surprise.

Note! The fact takes place, moreover, it is supported by official documents, in particular 1970N04P16-17 - this is the outgoing number of the factory newsletter, which described the changes made.

In the photo - official materials of the Izhmash Design Bureau

The new generation motorcycle received:

1. Direction indicator lights are a first in domestic practice;
2. Semiconductor relay for controlling direction indicators (installed in the headlight);
3. New size of wheels and tires (3.50x18 versus previous - 3.25x19);
4. New brand increased capacity battery (old one on IZH Planet 2 - ZMT-6);
5. And, of course, more engine power. The power unit now developed 18 hp.

Modifications

But the creator engineers did not stop there and, having released the five-millionth car from the production line, presented a modification of the IZH Planet 3-01.

Mirror and safety arches are the distinctive features of the new modification

Among the innovations it should be noted:

1. Rear passenger footrests;
2. Roll bars;
3. Rearview mirror;
4. New steering wheel design.

For reference: The buyer paid for the changes out of his own pocket. In particular, the price for IZH Planet 3-01 was 750 rubles, the version with a stroller was 1140, and the “rural version” was even more expensive. Fortunately, care instructions were included with purchase, which made maintenance easier.

IZH Planet 3-01 with wide wheels of smaller diameter - “rural version”