Generator Niva Chevrolet: possible malfunctions and repairs

A real favorite among SUVs in the modern automobile market of the country is the car "Niva Chevrolet". It combines the excellent qualities of both a tourist SUV and a car for family trips. Due to its light weight and short overhangs, "Niva Chevrolet" can ride off-road and fords. He easily overcomes steep climbs.

But the electronics system is one of the most vulnerable places of the car. With regular inspection of electrical elements, with the timely removal of dirt and moisture from them, repairs will not be required even throughout the entire operation of the car.

Generator operation

The generator "Niva Chevrolet" is responsible for reliable and high-quality operation of the electronics system. The owner should in time identify possible malfunctions and carry out qualitative repairs, as the functioning of all lighting devices depends on its serviceable condition. It also affects the battery power. Continuous supply of current is provided by the generator.

Though it has small dimensions, the generator has great strength. In order to avoid a breakdown and failure of the car regulator, the owner must follow the rules of the car.

Particular attention should be paid to how the "Niva Chevrolet" generator works. The malfunctions that led to a malfunction in his work can be determined by automotive diagnosis. A repair completely depends on the degree of complexity of the breakdown.

Faults that happen in the generator

Generator "Niva Chevrolet", photo of which is given in our article, can have the following malfunctions:

• Damaged or completely worn pulley;
• The current-carrying brushes are worn out;
• Breakdown of the rectifier;
• Breakdown of the voltage regulator;
• The collector is worn;
• Worn or completely destroyed bearing;
• The wires of the charging circuit are damaged.

The owner of the car should familiarize himself with the main causes, in which there are malfunctions of the generator. In addition, you need to know how to eliminate these breakdowns, as well as preventive measures to prevent them.

Generator "Niva Chevrolet"

Depending on the type of current, the generators are of constant and alternating current. Owners of the named car sometimes do not know, and for this model which generators are used? "Niva Chevrolet" was provided with an electromechanical device of alternating current. A diode bridge is built in here - the rectifier. To ensure the work of electric consumers, it converts the alternating current into a constant one. The diode bridge with the generator is a single mechanism, they can be located both in the housing and in the lid of the generator.

The latter is affected by the speed of the car and the speed of its engine, since the generator is connected by a belt to its knee shaft. To adjust the output current, a voltage regulator is installed . In addition, in modern generators integrated voltage regulators are built-in.

The generator "Niva Chevrolet" can be subject to the following faults:

• Electric;
• Mechanical.

If the malfunction is mechanical, then it refers to the breakage of the attachment, the housing, the malfunctioning condition of the pressure springs, bearings, belt drive or other breakdowns that are not connected to the electrician.

In the first type of faults, winding breaks, burn-in or wear of the brush are possible, the rotor can penetrate, and a short circuit can occur between the turns. The diode bridge and the relay-regulator can appear in a faulty condition.

Sometimes there are signs indicating that the generator "Niva Chevrolet" in a faulty state, but this problem can cause quite a different breakdown.

Symptoms of generator failure

As a rule, there are several signs of generator failure:

1. When the engine is running, the battery discharge indicator lamp flashes or constantly, without a break, is lit.
2. The car lights are dim, and when the engine is running, there is a rattling of the sound signal or it is completely silent.
3. The battery quickly loses its charge.
4. With the increase in the number of turns, the brightness of the headlights changes significantly.

Belt generator "Niva Chevrolet"

In order not to get into an unpleasant situation, it is necessary to ensure that the belt of the Chevrolet Niva generator is in working order. Thus, the presence of a mechanical damage to the pulley can lead to damage to the belt, as a result, it can break off.

Alternator Belt Replacement

To change the belt generator "Chevrolet Niva", you need to use the following tools:

• screwdriver;
• jack;
• a set of keys.

In the car "Niva Chevrolet" replacement of a generator belt occurs as follows:

1. It is necessary to remove the connector from the crankshaft position sensor.
2. Unscrew and remove the bolt securing the sensor.
3. The nut attaching the generator, it is necessary to weaken a little and move it to the block. With a biased generator, its belt will loosen and take off without problems.
4. Using a jack installed on the side where the generator is placed, raise the car, including the first gear.
5. Pull the belt so that it moves away from the pump pulley. Twist the wheel to move the pulley to the pulley.
6. Then remove the belt from the other pulleys.
7. The new one must first be put on the pulley of the generator and the crankshaft pulley, and only then be thrown onto the pulley of the pump.
8. Turn the wheel until the belt is on the pulley.
9. Put the generator in place, and pulling the belt, attach it with a nut to the bracket.
10. Replace the crankshaft position sensor.

The process for replacing the generator belt is complete.

The generator roller

The belt tension affects the operation of the generator. A roller generator "Chevrolet Niva" regulates it. During the operation of the car, make sure that the roller is in good condition. At occurrence of the slightest suspicion on breakage "Niva Chevrolet" is subject to repair.

How to replace the tension roller

The device of the generator roller is quite simple. The bearing is its main part. When the belt is loosened or slowed down, it is necessary to check the bearing itself by manually scrolling it. The working roller has a quiet rotation, there are no jerks and snacks. If the roller's condition is faulty, it is necessary to replace it, which is possible even in the garage, with a minimum set of attachments.

Mounting or another tool that can prevent the crankshaft from moving, set so that the clutch disc is locked. Loosen the bolt, which fixes the roller, remove the voltage coming to the belt. After completely removing the axle bolt, remove the tension roller. Then, a new roller is installed and the belt tension is adjusted.

Replacing the roller, you need to conduct a second inspection and check its operation. The instruction manual contains detailed instructions regarding the described problem.

Generator brushes

To drawdown voltage in the electrical system of the car can lead worn brushes generator "Chevrolet Niva". This is considered one of the main and frequent causes of this type of malfunction. But since the generator has a simple design, and it is easy to get to it, even an inexperienced motorist can replace its brushes.

The main signs of faulty brushes are:

• In tension, subsidence occurs;
• Does not hold the battery charge;
• Faint headlights at night, blinking;
• Radio cassette switch off, etc.

Usually, when passing the inspection, the small elements of the generator are rarely checked. Therefore worn brushes can remind themselves unexpectedly. But before deciding that replacing the Brush Generator Niva Chevrolet is necessary, you need to find out if there are any other faults that can cause such symptoms. And only after making sure, you can disassemble the generator case.

Replacing the generator brush

When changing brushes, the voltage regulator is removed together with them in the assembly. This removes the negative terminal of the battery and disconnects the wires that go from the generator housing.

Then the wire shoe is disconnected. From their tips with a positive terminal, it is necessary to remove the rubber cap performing protective functions. Then, with these wires, you need to unscrew the nut with which they were attached to the generator block and remove them.

After detaching the spring clips of the generator, you must remove its black casing, made of plastic. Unscrew the voltage regulator attachments using a Phillips screwdriver. Bring it complete with brushes. Then disconnect the wire harness from it.

Replace the generator brushes and set back, adhering to the reverse order.

When the length of the rods is less than 0.5 mm, they must be replaced. But if the brushes are in working order, and the Niva Chevrolet generator does not give a charge, it is necessary to check the operation of the voltage regulator and the circuit from the regulator to the brushes.

Reasons to replace the generator

One of the reasons, when the replacement of the generator on the "Chevrolet Niva" is simply necessary - is the damage to the windings. If this happens, then you need to either rewind, or you will have to purchase a new generator. Maybe the repair will be a bit cheaper, but no one will give you guarantees about the quality of the rewind and the uninterrupted supply of current to the battery.

Generator removal

For this process, you need to take a Phillips screwdriver. In addition, it is necessary to resort to the help of a car tester or an ohmmeter, a key for 10 and a warning lamp.

To change the generator, it must be removed from the engine compartment. First, disconnect the negative battery cable and battery terminal. Next, disconnect the terminal block with the wires and the output of the generator, and take out a protective cover from there. Then, having unscrewed the nut, disconnect the wires on the generator's bolt. Then unscrew the bolt, which secures the generator to the tension bar, and pull it out. Also it is necessary to unscrew the bolt-shaped fastening, at the bottom of the generator.

Then, remove the strap. After removing all the bolts, the generator must be removed from the bracket using a mounting shovel. To install a new one, you need to go through the whole process in reverse order.

Replacing the described electromechanical device, you need to inspect its drive belt and adjust the degree of its tension. But before changing the old "Niva Chevrolet" generator to a new one, it is necessary to make sure that replacement is really necessary. There are times when repair can be done by yourself without recourse to specialists.

In order to avoid confusion, it should be noted how correctly the generator covers are located. Next, remove the plastic protective cover by unfastening the three latches on it. The voltage regulator and the brush holder are removed together. In order to release the rectifier unit and the capacitor, it is necessary to disconnect the wires from the regulator terminal. The stator winding has three terminals. And to perform the operation to remove the rectifier block and the capacitor, you need to bend these leads a little. Using a flat screwdriver from the side where the contact rings are located, remove the cover from the generator.

Clamping the rotor of the generator in a vice, unscrew the fastener from the pulley. Then take out the spring washer, pulley and thrust washer. Then the rotor and the remote ring are carefully pulled out and their condition is checked. If the ring has traces of damage, scratches and a noticeably worn condition - it needs to be sanded with a normal skin. If the result is poor, the ring is ground on a lathe with the removal of a small layer of metal.

By connecting the rotor with the contact rings, check the resistance of its winding with the tester. If the wiring is torn, an infinite reading is visible on the instrument. For this reason, the rotor must be replaced.

To check whether the winding of the rotor closes or not, you need to turn on the control lamp in a network, where an alternating current of 220 V goes. One lamp wire is connected to the rotor, the second one is connected in turn by each ring. If the lamp lights up, the rotor must be replaced.