Sometimes situations arise that it is necessary to remove from the car Daewoo Matiz generator for repair or replacement. However, we do not always have access to an inspection hole, overpass or lift. Therefore, now we will learn how to replace the generator without additional tools. Thus, we don't need to lift the car, instead working only in engine compartment. All actions will be performed from the right wheel.

Let's start work

Having opened the hood, we find there. We will need to drain it so that during further dismantling we don’t spill it on the floor. First prepare a small container to collect the coolant. A sparkling water bottle will suffice.

Remove the connector from the generator and the boot near the right wheel

So, we disconnect the pipe that leads from the expansion tank to throttle valve. To do this, we compress the clamp with pliers, pulling it back a little. This will allow us to remove the already mentioned upper pipe. We move the clamp closer to the engine shield for convenient removal and drainage of liquid from the pipe into a bottle or canister that we previously prepared. Since there is practically no pressure in the pipe, you don’t have to worry about it jumping out of the container. To drain the liquid more efficiently, start the engine and wait until all the antifreeze is drained.

Now we can remove expansion tank. Remove the terminals from battery to avoid possible short circuit. Now you can remove the second upper pipe, as well as lift the power steering reservoir. This will allow you to move the expansion tank slightly towards you and dismantle the lower pipe by moving the clamp clamp with pliers. Now you can completely remove the tank, which is what we do. We remove all the pipes to the side to gain free access to the generator.

On the way to the generator

Next, disconnect the fuel line from the fuel rail. To do this, press two clamps on both sides of the fuel line. Raise the clamps up until they click and lower them back. So we disconnected fuel line from the ramp.

The generator has one electrical connector that goes to the battery charge indicator light. We will need to disconnect it. A wire (plus) is attached to the nearby nose terminal, which can be disconnected by unscrewing the nut using a 10mm wrench. We need to unscrew the generator tension bolt and two bolts securing the generator bar.

Remove the top bar and watch fuel rail, the tube of which can bend if not handled carefully. The generator itself has a bolt and a bracket fastening. To dismantle them, you need to use a 12mm wrench. Next, remove the boot under the generator, which is held on by two nuts with a 10mm head and one bolt.

Now we get directly to the generator itself. On one side there is a bolt, and on the other there is a bolt and nut. To dismantle the generator we will need to unscrew the bolt from the rear bracket of the engine mount. Don't worry, this won't damage the engine. You will also need to remove the alternator belt.

If necessary, you can replace it if it is damaged.

Now we need to unscrew the two support mounting bolts that go under head 12. If they don’t unscrew very well, you can use WD-40. On the bolt, which is located closer to the center of the engine, there is a ground wire. Don't forget to connect it back later when you reassemble.

Having previously removed the support mounting bolt (however, you don’t have to completely unscrew it, but just loosen it a little until there is noticeable play), remove the generator through the hole between the pan and right side spar. When disconnected rear cushion engine, there should be enough space for removing the generator.

After we managed to remove the generator, you can begin repairing or replacing it. The steps to reinstall the generator are exactly the opposite of those already performed. Of course, this method of accessing the generator is not as convenient as when working with a lift, but it allows you to quickly repair it while being away from a car service center.

Despite the fact that the Daewoo Matiz alternator belt and other elements are quite reliable, failures still occur. A car owner should know how to carry out basic repairs. on our own. All about this in our article.

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Typical generator problems

The vast majority of cars produced by Daewoo have two main types of generating devices. This is a generator Matiz, Nexia CS130 and CS121. A similar model is in Gentra's car. There are no fundamental differences other than the size of the stator. They are even interchangeable.

Unification allows basic repairs to be carried out according to the same scheme, regardless of which model is installed on the Daewoo Matiz. As practice shows, the stator and rotor are both reliable models. In most cases, mechanical damage leads to disruption of their operation.

The most common troubles include:

• destruction on the back cover;
• burnout of the diode bridge due to improper washing, contact with oils and technical liquids on the housing.
• scorching of the working surface;
• generation of generator brushes.

These problems can lead to others. Thus, the destruction of the bearing leads to strong shock loads on the rotor and stator. Also, because of this, a short circuit of the “plus” of the brushes to ground may occur - and as a result, the relay-regulator will burn out.

Troubleshooting methods

Most of these problems are quite easy to fix. For Daewoo models you can find on sale such parts as a relay regulator, a diode bridge and bearings for both covers. At the same time, repairing the front cover with bearing replacement has its own characteristics and difficulties, and also requires special tools. It’s better not to do it yourself and entrust the repair of the Daewoo Matiz generator to a professional.

As for the other problems mentioned above, repairs are carried out by disassembling the generator. To do this, you need to unscrew the ties and disconnect the front cover by pressing the latches. In order to repair, you will need tools such as keys, a flat-head screwdriver, a soldering iron, and a hammer may be useful (for setting the plates).

Instructions for replacing the alternator belt

Another common problem is the alternator belt. Fortunately, replacing it is one of the easiest operations. It is not particularly difficult even for those who are not very well versed in how the Daewoo Matiz generator works.

Periodicity

Checking the condition of the generator belt and its tension should be carried out regularly. As practice shows, this part is one of those that fail most often. Therefore, experienced craftsmen recommend checking the condition of the strap once a year and replacing it if necessary.

Unlike timing belts, there is no clear data on how far a car travels before it needs it. It is necessary to check its tension. But in most cases, when harsh conditions operation, replacement is required every 80 thousand kilometers. In normal conditions, the alternator belt Daewoo Nexia will withstand 120 t. km or more.

Stages

The scheme of your actions for replacing the generator strap with Nexia should be as follows:

• first remove the air-conducting sleeve, which is assembled with an additional muffler for the intake air noise;
• then check the belt tension by pressing it with your finger between the pulleys;
• with a pressing force of 10 kgf, the belt deflection should be in the range from 10 to 15 mm;
• to adjust the tension, loosen or tighten the bolt attaching to the tension bar;
• If you have a car without air conditioning, then removing the belt is done simply after loosening the tension by removing it from the pulleys:
• if the car has air conditioning, you need to remove the drive belt of its compressor; to do this, loosen the nut;
• to install a new belt, all parts are mounted in a ritual manner;
• At the same time, tighten the compressor drive belt so that at a pressure of 10 kgf it bends by 5-8 mm.

Video “Repairing the Daewoo Matiz generator”

Daewoo Matiz. Insufficient oil pressure (low oil pressure indicator light is on)

Scroll possible malfunctions	Diagnostics	Elimination methods
Low engine oil	According to the oil level indicator	Add oil
Oil filter is faulty	Replace the filter with a known good one.	Replace the faulty oil filter
The drive pulley mounting bolt is loose auxiliary units	Check bolt tightness	Tighten the bolt to the specified torque
Clogged oil receiver mesh	Inspection	Clear the mesh
Skewed, clogged pressure reducing valve oil pump or valve spring weakening	Inspection when disassembling the oil pump	Clean or replace the faulty relief valve. Replace the pump
Worn oil pump gears		Replace the oil pump
Excessive clearance between bearing shells and journals crankshaft	Determined by measuring parts after disassembling the oil pump (at a service station)	Replace worn liners. If necessary, replace or repair the crankshaft
Insufficient oil pressure sensor is faulty	We unscrew the low oil pressure sensor from the hole in the cylinder head and install a known-good sensor in its place. If the warning light goes out while the engine is running, the inverted sensor is faulty	Replace the faulty low oil pressure sensor

Causes of drop in oil pressure

There is a light on the instrument panel that indicates emergency oil pressure in the engine. When it lights up, it is a clear sign of a problem. We'll tell you what to do if the oil pressure light comes on and how to fix the problem.

The oil check light can come on for two different reasons: either low oil pressure or low oil level. But what exactly does the light on the dashboard oil light, only the operating instructions will help you find out. It will help us that, as a rule, budget cars do not have a low oil level indicator, but only low pressure oils

Insufficient oil pressure

If the oil light comes on, this means insufficient oil pressure in the engine. As a rule, it lights up only for a few seconds and does not pose a great threat to the engine. For example, it can light up when the car rolls heavily during a turn or during a cold start in winter.

If the low oil pressure light comes on due to a low oil level, then this level, as a rule, is already critically low. First of all, when the oil pressure light comes on, check for the presence of engine oil. If the oil level is below normal, then this is the reason for this lamp to light up. This problem The solution is simple - you need to add oil to the required level. If the light goes out, we rejoice, and do not forget to add oil on time, otherwise this could result in serious problems.

If the oil pressure light is on, but the oil level on the dipstick is fine, then another reason why the indicator could light up is a failed oil pump. It does not do its job of ensuring sufficient oil circulation in the engine lubrication system.

In any case, if the oil pressure or low oil level light comes on, the car must be stopped immediately by pulling over to the side of the road or more safe place, and mute. Why do you need to stop right away? Because if the oil in the engine has depleted significantly, then the engine may stop and break down with the prospect of very expensive repairs. Don't forget that oil is very important to keep your engine running. Without oil, the engine will fail very quickly - sometimes in just a few minutes of operation.

This situation also occurs when the engine oil is changed to new one. After the first start, the oil pressure light may come on. If oil good quality, it should go out in 10-20 seconds. If it does not go out, the reason is a defective or non-functioning oil filter. It needs to be replaced with a new quality one.

Oil pressure sensor malfunction

Oil pressure at idling(at approximately 800 - 900 rpm) should not be less than 0.5 kgf/cm2. Sensors for measuring emergency oil pressure come with different response ranges: from 0.4 to 0.8 kgf/cm2. If a sensor with a response value of 0.7 kgf/cm2 is installed on the car, then even at 0.6 kgf/cm2 it will turn on a warning lamp indicating how emergency pressure oil in the engine.
To understand whether the oil pressure sensor is to blame for the light coming on or not, you need to increase the crankshaft speed to 1000 rpm at idle. If the light goes out, then the oil pressure in the engine is normal. If not, then you need to contact specialists who will measure the oil pressure with a pressure gauge, connecting it instead of the sensor.
Cleaning the sensor helps prevent false alarms. You need to unscrew it and thoroughly clean all the oil channels, because the cause of false alarms of the sensor may be due to blockages.

If the oil level is normal and the sensor is working

First of all, you need to check the oil dipstick and make sure that the oil level has not increased since the last check? Does the dipstick smell like gasoline? It is possible that gasoline or antifreeze is getting into the engine. It’s easy to check the presence of gasoline in the oil; you need to dip the dipstick in water and see if gasoline stains remain. If yes, then you need to contact a car service; the engine may need to be repaired.
If there is a malfunction in the engine, which is caused by the oil pressure light coming on, it is easy to notice. Engine malfunctions are accompanied by loss of power, increased fuel consumption, and exhaust pipe black or blue smoke comes out.

If the oil level is normal, then there is no need to worry about a prolonged indication of low oil pressure, for example during a cold start. In winter, at low temperatures, this is an absolutely normal effect.
After parking overnight, the oil drains from all lines and thickens. The pump needs a certain time to fill the lines and create the necessary pressure. Oil reaches the main and connecting rod journals earlier than the pressure sensor, so wear of engine parts is eliminated. If the oil pressure light does not go out for about 3 seconds, it is not dangerous.

What you can do yourself

Measuring engine oil pressure
The problem of low oil pressure greatly complicates the relationship between lubricant consumption and level drop and the overall pressure in the system. In this case, a number of malfunctions can be eliminated independently.

If leaks are detected, the problem is quite easy to localize and solve. For example, oil leakage from under oil filter eliminated by tightening or replacing it. The problem with the oil pressure sensor, through which lubricant flows, is solved in a similar way. The sensor is tightened or simply replaced with a new one.
As for seal leaks, in this case you will need time, tools and skills. At the same time, you can replace the front or rear crankshaft oil seal with your own hands in your garage with an inspection hole.

Oil leaking from underneath valve cover or in the area of ​​the pan can be eliminated by tightening fasteners, replacing rubber sealing gaskets, using special sealants for the engine. Violation of the geometry of the connecting planes or damage to the valve cover/pan will indicate the need to replace such parts.

If coolant gets into motor oil, then you can remove the cylinder head yourself and replace the head gasket, while following all the recommendations regarding the removal and subsequent tightening of the cylinder head. An additional check of the mating planes will indicate whether the cylinder head needs to be ground. If cracks are found in the cylinder block or head, repairs are also possible.
As for the oil pump, if this element wears out, it is better to immediately replace it with a new one. It is also not recommended to clean the oil receiver, that is, the part is completely changed.
In the case when the problem in the lubrication system is not so obvious, and you have to repair the car yourself, then at the very beginning you should measure the oil pressure in the engine.
To solve the problem, as well as taking into account an accurate understanding of where the oil pressure in the engine is measured and how this is done, you need to prepare in advance additional equipment. Please note that there is a free sale ready-made device for measuring engine oil pressure.

As an option, a universal oil pressure gauge will “Measure”. This device is quite affordable and comes with everything you need. You can also make a similar device with your own hands. To do this, you will need a suitable oil-resistant hose, pressure gauge and adapters.

Ready for measurement or homemade device is connected instead of an oil pressure sensor, after which the pressure readings on the pressure gauge are assessed. Please note that regular hoses are used when self-production it is forbidden. The fact is that oil quickly corrodes rubber, after which the detached parts can get into the oil system.

Results

The pressure in the lubrication system can drop for many reasons:
-oil quality or loss of its properties;
- leaks of oil seals, gaskets, seals;
-oil “presses” out of the engine (pressure increases due to malfunctions of the crankcase ventilation system);
- oil pump malfunctions, other breakdowns;
-power unit may be very worn, etc.

In some cases, drivers resort to using an additive to increase engine oil pressure. For example, XADO revitalizant. According to manufacturers, such an anti-smoke additive with revitalizant reduces oil consumption, allows the lubricant to maintain the required viscosity when heated to high temperatures, restores damaged crankshaft journals and liners, etc.

As practice shows, additives cannot be considered an effective solution to the problem of low pressure, but as a temporary measure for old worn-out engines, this method may be suitable. I would also like to draw your attention to the fact that the blinking oil pressure light does not always indicate problems with the internal combustion engine and its systems.
It is rare, but it does happen that electrical problems arise. For this reason, the possibility of damage to electrical components, contacts, pressure sensor or the wiring itself should not be ruled out.

Finally, we would like to add that using only the recommended oil helps to avoid many problems with the oil system and engine. It is also necessary to select a lubricant taking into account individual operating conditions. Deserves no less attention correct selection viscosity index by season (summer or winter oil)

Engine oil and filters must be changed correctly and done strictly according to regulations, since an increase in the service interval leads to severe contamination of the lubrication system. In this case, decomposition products and other deposits actively settle on the surfaces of parts and channel walls, clogging filters and the oil receiver mesh. Under such conditions, the oil pump may not provide the required pressure, causing oil starvation and significantly increasing engine wear.

Symptoms: The generator is not working, the generator is not working efficiently.

Possible reason: damaged or torn drive belt generator

Tools: wrench set, socket set, flat blade screwdriver, Phillips blade screwdriver.

The following work is carried out on an overpass or inspection ditch.

1. To check the tension of the generator belt, press the belt between the generator pulley and the crankshaft pulley, measuring the deflection of the generator belt with a ruler.

Note. The deflection of the generator belt should not exceed 10 millimeters with a pressing force of 10 kgf. If the deflection exceeds the maximum permissible limits, tension it, following the instructions given below.

2. Loosen the tightening of nut “A” using a “12” wrench, holding the bolt of the left fastening of the generator to the bracket from turning with a second “12” wrench; loosen the bolt “B” of the right generator mounting.

3. Loosen the generator mounting bolt to the adjustment bar using a wrench.

4. Insert the mounting spade between the generator and its bracket.

5. Press the generator away from the BC, tensioning the belt.

6. Tighten the generator mounting bolt to the adjustment bar.

7. Check the generator belt tension again.

Note. Avoid over-tensioning the alternator belt, as this can lead to accelerated failure of the alternator bearings.

If signs of wear or tears are found on the generator belt, the belt should be replaced following the further instructions.

8. Remove the mudguard and remove it from the right front wheel arch.

9. Remove the hydraulic power steering pump drive belt.

10. Loosen the generator bracket.

11. Move the generator towards the cylinder block using a mounting blade.

12. Remove the generator drive belt.

13. Install the belt in reverse order.

Pavel Kurakin Motorist

The cost and time of work is determined by the presence of additional equipment, which can also drive the drive mechanism. It is better to replace the alternator belt on a Daewoo Matiz every 40 thousand km. In terms of time, the work takes from 30 minutes to 2 hours.

We also recommend changing the rollers, including the tensioner. On some models, special tools may be needed to achieve proper tension. In any case, before making a decision, contact a car service and carry out diagnostics. A lot of people are given advice by “Uncle Vasya from the garage,” who over the phone determined what needs to be changed, but the problem turns out to be something else.

Price:

Car services in St. Petersburg:

When is it time to change:
- a whistle that occurs when there is a load on the electrical equipment of the car;
- cracks on the belt;
- loss of elasticity;
- alarm about decreasing battery charge when it is fully charged.

Work guarantee- 180 days.

Which one to choose:
1. Contitech (Germany)
2. Dayco (Italy)
3. SKF (Sweden)
4. Gates (USA)
5. Flennor (European Union))

When purchasing spare parts from us, we will provide a discount on replacement.