One of technical workwhich car owner can do independently without the involvement of car service specialists, is a lifts of the generator belt. Riding a car with a weakened generator belt negatively affects the battery and can lead to its complete discharge and failure. That is why it is important when the first signs of weakening the generator belt, pull it up to normalize the charging of the battery and the operation of the car electrical equipment.
Table of contents:Please note: on some cars, the generator belt also leads to the motion of the pump. In the event that it is not tightened on time, it will lead to negative consequences. At a minimum, the risk of overheating of the motor will increase, which, in turn, can pour out the need for overhaul.
Symptoms of weakened generator belt
Not all drivers know when the generator belt is weakened, and what signs indicate this. The main sign of the weakened generator belt is. It is best heard at the time of the engine start, as well as when the rollery set.
IMPORTANT: Remember that not only a weakened generator belt can lead to such scribes. Related signs of loosening other belt drives - or hydraulic agent.
To accurately determine that the whistle goes precisely from a weakened belt of the generator, you need to check it. The easiest way to do is, if you drown out the motor, after which in manual mode, check how well the belt is stretched. To do this, it will be necessary to check the validity of the belt deflection. To do this, put on the belt. If it begins not more than 0.5 cm, it means that its tension is sufficient for normal work. If the deflection is stronger, this suggests that it is necessary to pull the generator belt.
Another symptom that explicitly indicates the presence of problems with the generator or the tension of its belt is a strong drop in the level of charge rechargeable battery.
How to pull the generator belt
After you found that the generator belt weakens, it is better not to pull with this problem and immediately begin to solve it, that is, stretch the belt. This is a simple job with which you can cope with yourself without the presence of professional technical skills and knowledge. However, depending on the car, the generator belt tensioning process may differ, consider the main of them.
Adjusting Planca
The simplest mechanism for adjusting the tension of the generator belt is an adjusting plank. It can be found, more often, on cars of the budget price category.
The generator with a similar mechanism is attached to a block or motor of the engine using a long screw. With this screw, you can move the generator relative to the motor. As an adjustment mechanism, a bar with a slot under the nut is used. Most often, this mechanism is located in the upper part of the generator.
To adjust the generator fixed on the bar, you must do the following:
- Unscrew or weaken the adjusting nut itself;
- With mounting or other similar tool, push the generator from the engine so that the belt is sufficiently stretched;
- Next, a previously weakened nut is delayed on the bar.
- After that, you can check how high quality work is performed, and the belt stretches enough.
Adjusting screw
A more reliable and modern method for fastening the generator involves the use of an adjusting screw. At modern premium foreign cars, as well as on many models of the middle and even budget price segment, it is just such a method of fastening. To tighten the generator belt, stretched with the adjusting screw, you must:
- Weaken the upper or lower tightening of the generator;
- Next, make one turn of the adjusting screw clockwise;
- Push the generator from the cylinder block, making sure that the belt stretches enough;
- Tighten the nuts that fasten the generator.
After that, you need to check how well the generator belt is stretched. If necessary, perform the stretch again.
IMPORTANT: Overly stretched the generator belt can lead to its rapid wear.
Replacing a belt generator
If after you pulled the belt of the generator, it continues to whistle and quickly starts hanging, it is likely that it will be necessary to replace it. Most often, reasons for replacing the generator belt are:
If any of the indicated signs appeared, or the generator belt broken occurred, it is necessary to replace it. If the generator belt is selected, it is recommended to use the selection by a VIN code, or you can report information about the required belt to the seller, specifying it before in the book technical exploitation car.
The process of replacing the belt is quite simple, you can read it in the book on the technical operation of your car. Before you begin to work, you need to put a car to the handbrake and de-energize the network by removing the terminal from the battery. The work itself is reduced to the fact that the mount is pre-weakened, after which the generator must be pressed to the engine and remove the old belt. Next, a new belt is stretched into its place.
If from under the hood when the engine starts, at the beginning of the movement, or when switching gear, a characteristic whistle disappears, after increasing the engine speed, it's time to pay attention to the generator belt. If a warning lamp in the form of a battery on dashboard It does not go out after the engine launch or caught fire during the movement, then, most likely, the belt has already failed.
Checking the condition of the drive belt of the generator and the stretch roller
Even if you did not hear the characteristic sound from under the hood, the broker of the generator belt is difficult not to notice - this can be understood both along the tanned lamp on the dashboard and at a noticeable reduction in the capacity of the entire electrical equipment. However, similar symptoms may be due to damage to the wiring, or the failure of the generator, therefore, in the absence of a belt on the pulley, it is still worth ensured by visual inspection.
Ideally, bring the drive belt to such a state, when he simply coarses from excessive wear, of course, it is not worth it. To do this, it is periodically necessary to check its condition. Make it will not be difficult, because the belt is perfectly visible when opening the hood. It is enough just to take a look at it, for example, topping the liquid into the washer tank. When detecting on the surface of scuffs, cracks, detacies, cuts and other damage, it is necessary replace the generator belt .
To check the status of the tension roller of the generator belt, it is necessary to listen to its operation when the engine is running. If a distinct crunch, a creaking or whistle is heard on the right side, while the belt is normal, it is necessary to drown out the engine, remove the belt (by the way, it will allow it better) and scroll through the roller with your hand. If it turns out that extraneous sounds gives it precisely it is - the item must be changed. Otherwise it is worth checking tension roller Timing belt and pump.
Checking the tension of the generator drive belt
In some cases, a low charging current produced by the generator may cause slipping of the drive belt for pulley due to its insufficient tension. You can check the tension by attaching the 10 kgf force on the area between the crankshaft pulley and the generator. In this case, the belt must bend about 1 cm. If the deflection is larger, the belt must be pulled by adjusting the position of the tensioning roller.
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Belt tension It is possible to control the stiletto of the stretch mechanism when spinning the stud. To do this, rotate the key with the help of a conventional impossibility - the simplest spring weights. When his testimony is achieved 2 kg - pulling the hairpins must be stopped.
Timely checking the generator belt and its tension Allows you to prevent the discharge of the battery, as well as the need to replace the drive belt in "mutual conditions". Check the status of the tension roller of the drive belt can be by its rotation, preferably without load. The emergence of foreign sounds at the same time testifies to strong wear.
The generator device is a node required to feed the entire electrical equipment of the machine. Its proper work depends on many factors, including the right stretch. Stretch the generator belt can be three ways.
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How to check tension?
Before adjusting and delaying the drive belt in the car, it is required to check the tension values. This parameter is unique for each individual car, as well as the type and model of the generator set.
To learn in detail about the value of the tension, it is possible from the information provided in the service documentation for the machine. These data can be specified in technical manual To the generator device or drive strap.
The value of the stretch will influence the use of additional electrical equipment, which is in the car. In particular, we are talking about the air conditioning system and the hydraulic increase system of the steering wheel. In general, it can be said that when exposed to 10 kg on the strap, its deviation should be about 1 cm. It is necessary to prescribe on the product on the most prolonged area, directly between the pulleys, while the pressure of the pressure should be about 10 kg. But this value is only approximate, since in many VAZ models this parameter is 6-10 or 15-15 mm.
Belt stretch instruction
The tensioner adjustment can be performed in garage conditions. There are several ways to stretch, we will analyze each of them in detail.
Generator belt tension scheme
Strap Tension SchemeUsing the adjustment plank
In many machines, the generator installation is fixed on the crankcase of the power unit by means of a special elongated bolt. This element provides the ability to move the device in different directions. From above there is a special plank, made in the form of an arc. It has a slot, as well as a nut, which fixes the location of the aggregate of the engine.
To perform a drive strap taking the following:
- The nut wrench is twisted on the bar.
- Using the mounting blade, mount or other similar tool, the generator sets down from the motor.
- Nut is delayed on the bar.
- Diagnostics of the strap holder is performed. If required, the tension procedure is repeated.
Using an adjusting bolt
The bolted control of the position of the drive strap is considered more convenient to maintain and modified.
The adjustment procedure is performed as follows:
- It is attenuating the tightening of nuts. They are located on top and bottom from the generator set, on fasteners.
- By turning the adjusting screw clockwise, the unit is moving away from the block. When performing this task, you must simultaneously diagnose the degree of tension of the product.
- When reached required result, nuts are tightened back.
Drmtest channel spoke about adjusting the drive strap stretching force using a bolt on the example of the Honda Civic model 7.
Using a roller
Regardless of the method used to stretch, after performing the task, the crankshaft shaft of the motor must be checked into several revolutions.
After that, the tension level is re-diagnosed. The control check is allowed after a trip, but it must be short. The adjustment procedure with a roller may differ depending on the car model and have its own characteristics.
To perform the task, you need a set of wrench and a tool designed to turn the adjustment bearing. The tool is a key performed in the form of two metal rods having a diameter of 4 mm.
In the absence of a key, you can use the curved pliers, the teller adjustment process is considered on the example of the Lada Priora machine:
- The hood of the car opens and the generator is located.
- It contains a fixing screw, with which the roller is attached. It must be loosen, but not to unscrew completely. For loosening, a wrench is used at 17.
- Then, using the key to adjust, the roller turns. Depending on the need (increase or reduce the tension value), the roller scrolls into one or the other side.
- Using a wrench after adjustment, the roller fixation is performed. When setting, it is important to correctly choose the stretch force.
- When the procedure is completed, the diagnosis of the correctness of the work is performed. To check start force aggregate And all electrical equipment is activated. It is necessary to include optics, tape recorder, stove or air conditioning system, wipers, glass heating system, etc. If all devices function correctly, and the drive strap does not whistle, then the expenditure procedure is performed correctly.
Channel just gradually presented detailed instructions On the stretch of the drive strap in the Lada Priora car.
Consequences of irregular stretch
If you do not pull the drive strap on time and it will weaken, it will reduce the parameter of the battery charging current. If the charge strength is low, the battery consumes its own resource, as a result of which the service life of the device drops. As a result, the destruction of the inner plates or short circuit occurs. If the battery is maintenanceable, then it will have to be changed, it is not subject to repair.
Too weak tension will cause the appearance of voltage jumps in on-board network cars. For older cars, this problem is non-critical. But in new models equipped with many electronic devices and systems, electrical equipment will fail. In particular, the engine of the motor will break, repair will be expensive. Inadequately stretched the drive strap jumps from the shaft when rotating at high speed, and sometimes it can break through the hood.
With a strong stretching on rubbing nodes and components of additional units, high load is assigned. About the tunnels may not report to the functioning of the motor Motor, usually noise makes a tensioning roller. Sometimes the hums publish bearing devices of the generator set, the compressor of the air conditioning system or the system of hydraulic steering wheel. The source of the noise can be the sleeve of the water pumping device.
Replacing the worn belt
A brief algorithm of action when replacing the product:
- Turns off the battery in the car.
- The owner of the car relaxes nuts fixing fasteners.
- Tension screw is unscrewed. When completing the task, you must simultaneously press the generator device to the power unit.
- The worn product is replaced with a new one. The set of the installed belt is performed.
- Fixation of nuts is fixed. A checkpoint is performed and checking the tension correctness. If necessary, the product is adjusted.
Video "Example of stretching on VAZ 2110"
The channel in the garage submitted detailed instructions for carrying out the generator drive strap stretching process on the example of "dozens".
When using driving belts, we gradually stretch under the influence of the generator, the water pump and the fan (if any). In addition, the state of the belts depends on their age and the degree of twisting.
Principle of operation of drive belts
The belt is attached to the pulley with the V-shaped groove and controls the generator and the water pump with the fan, passing the rotational movement from crankshaft.
Stretched belts often slip and score from pulleys. The cracked belts ultimately rush. It is necessary to check the tension and the overall state of the belts at least once a month.
About the torn belt usually shows the ignition warning lamp or termination of the generator operation.
Overheating of the engine or suddenly discharged battery, may indicate that the strap provisis or jumped from pulley.
As a rule, the belt slips with a large generator loading - for example, when the headlights and the rear window heater are simultaneously included. In this case, the warning lamp does not light up, but the battery does not charge on full power And in the end wear.
Overheating caused by the strap slip, disrupts the water pump and fan.
In addition, under the influence of excessive temperature itself, the belt is extended much faster. As a rule, its inner surface is brought primarily.
On the other hand, excessive belt tension increases the load on the generator and the pump gear, which causes premature breakdowns.
Before checking the belts, remove the ignition key to prevent possible injuries from the suddenly turned on the engine.
When primary check, carefully inspect the belt and felt its inner surface to identify damage. For a more thorough check, remove the belt and sequentially bend each site to expose possible cracks.
When cracking, scrap, breaks and bumps, the belt must be replaced. V-shaped grooves on pulleys also need inspection. Make sure they are not the cause of damage. Grooves must be clean, smooth and smooth. Make sure that they completely coincide with the belts and did not twist them.
Any inconsistency usually means that the generator has been fixed incorrectly.
Intermediate wheel tensioning mechanism
In some cars there is an auxiliary mechanism that allows you to quickly and clearly adjust the degree of belt tension. Loosen the nut on the adjusting screw and rotate it until the belt stretches to the desired degree. Secure the nut and check the tension.
As a rule, checked or jumped belt makes a shrill screech. This sound varies depending on the speed of rotation of the engine.
Do not try to eliminate it, smearing the belt with oil. It can cause unexpected damage and breakage. In addition, sticky and wet belt will still creak even after adjustment.
A broken belt, which is evidenced by the ignition warning lamp, can hardly damage other parts.
For example, his chatting ends often hide the elements of the wiring, cut the hoses or even the radiator is preferable. If you assume a break, turn off the engine as quickly as possible.
Composite pulley
At the place of fastening the generator, a composite pulley is usually present that allows you to remove or adjust the belt. The design includes two concave disks, bonded between themselves, and several gaskets (washers).
The figure shows the outer half of the pulley with nut, gasket and an extra washer.
Checking belt tension
Find the middle of the belt by measuring the distance between the pulleys using the ruler.
Find the middle of the belt by measuring the distance between the pulleys using the ruler. Grasp the middle of the index and thumbs and move the belt from the side to the side.
Pay attention to how much it deviates from the initial position.
Normal deviation is approximately 13 mm. With a larger deviation, the belt should be pulled up, with a smaller - weaken. If necessary, check with the guide to the car.
Adjusting the drive belt
In order to pull the belt, turn the generator from the engine using wood or tube.
Adjustment is usually made with a bolt located at the location of the generator to the engine.
Fastening is mobile, so the generator can be left to the side. However, it should be remembered that the trajectory of motion is limited to a metal plate screwed to the free edge of the generator.
The belt adjustment is made by unscrewing the fastening bolts and the plate that ensures the free movement of the generator.
Loosen the bolts on the generator and adjusting plate.
Place a solid area under the generator (for example, a hammer handle), and then pull the belt.
After that, tighten the bolts on the plate by holding the generator in the desired position. Check the belt. If it is stretched correctly, tighten the bolts on the generator.
Check the belt tension by holding the generator in the desired position. If it is stretched correctly, tighten the bolts.
If you need to weaken the belt, unscrew the bolts on the generator so that it can be pushed off with your hands. Gradually move the generator towards the engine until you feel that the belt stretched enough.
After that, tighten the bolts on the generator and plate.
In some cars there is a tension mechanism that presses the belt to the wheel. In this case, you need to remove the adjusting bolt, turn the wheel and check the belt tension. As a rule, this method causes less difficulties than the movement of the generator.
Belt adjustment on composite pulley
Remove the nut or nuts that fasten the pulley parts.
Remove the front part, uncheck or install the washers so to narrow or expand the gap between the pulley parts.
With a suction of the gap, the belt moves from the center to the shoulders of pulley and stretches. When expanding the gap, the belt is pushing to the center, and the tension weakens.
Remove the front part and convince one puck to pull the belt. If you need to loosen the tension, add one puck.
Try not to clamp a belt between pulley details at reverse assembly.
Install the front pulley detail and secure it with a nut.
Tighten the nut a bit, turn the engine by a third turn, tighten it again, etc. As long as the details do not close enough tightly.
After that, check the belt tension.
Replacing the drive belt
The curvature of the new belt on the upper pulley. Do not try to push it with a screwdriver.
In stores and maintenance stations, where fans and drive belts are sold, there are always lists of spare parts suitable for cars of the most popular brands. Buy the belt of the desired size and quality.
The belts for generators are usually stronger and more expensive than belts for dynamo machines, but if you try to use an inappropriate belt, it is quickly wear out and suddenly breaks.
If there are no desired belts on sale, consult the supplier. Do not forget to take with you the old belt for comparison. Buying a strap other than the old, make sure that its characteristics meet the requirements of your car.
If the pulleys are located in the front of the car, replacement drive belts Does not cause special difficulties. If the engine is behind (as, for example, in mini), the work is complicated, because Access to the belt overlaps the fan cover or other details. In some cases, you have to remove the casing (at least partially).
In order to remove the old belt, loosen the fastening on the support of the generator and the generator to the engine as stronger as possible.
After that, you will most likely be able to remove the belt from the upper pulley (at the water pump). Remove the belt from the pulleys from the generator and the crankshaft and lift it over the fan. If there is a casing on the fan, try to drag the belt between it and the fan blades.
To install a new belt, do the steps in the reverse order. In some cases, the belt must be pulled on the upper pulley.
Take the belt fan, making sure that it is tightly lay down in the grooves on the lower pulleys. How closely pull the belt to the upper pulley, and then slowly turn the fan, pressing on the edge of the pulley with a thumb. Try not to pinch it with a belt.
If your car has an electric fan with viscous clutches (see section, how the engine cooling system works), it is possible to pull the new belt. You will have to turn a little engine, because With this design, the fan pulley does not rotate the crankshaft pulley, and it is impossible to pull the belt in any way.
If there is a viscous clutch on the fan, turn the crankshaft pulley to release the belt.
As a rule, the engine can be rotated using a wrench by closing the crankshaft pulley.
Do not use screwdrivers and other similar tools to direct the strap on the pulley. If the belt is impossible to tighten the usual method, it means it is too small, and you need to search another.
If you need to remove the belt with a composite pulley, use the method described in the Regulation section. When installing a new belt, first put all the necessary washers, and then check the tension and remove unnecessary.
When you first use, all new belts are stretched, so it is recommended to re-check after 300 km (or in accordance with the manufacturer's recommendations).
Weakened generator belt is frequent problemarising from many cars. But most often, such problems arise from domestic models, for example, VAZ 2108-09 or Muscovite. Although it is impossible to exclude the fact that representatives of foreign car industry are also faced with such faults. Therefore, you need to know how to tighten the generator belt yourself to eliminate all possible defects.
The insufficient level of the stretch may lead to serious consequences. For example, when weakening the belt, slippage may occur, due to which the generator cannot fully function (the voltage produced by them will decrease). As a result, the battery will be bad, electrical systems When the electricity deficit will work with an increased load.
What is the adjustment of the generator belt Note! With a weakened belt, the generator roller will begin slipping, which will provoke an increase in the temperature of the product itself. Under the influence of elevated temperature, it may fail prematurely.
But at the same time, with excessive tension, the product can also wear out or break. Telling adjustment is important momentSince the attenuation or excess tension of the generator belt will certainly lead to unpleasant consequences. It may be damaged not only the product, but the generator itself (with an increased load, the shaft is wears).
Tension checking
With the slightest suspicions of malfunctions with the generator belt, you need to conduct a diagnostic examination vehicle. To check, you need to get a caliper, but such a tool was not at hand, you can use the usual metal ruler.
The diagnostic instruction looks like this:
- press the belt with a small force (approximately 4-6 kg);
- using a ruler, make a measurement of the resulting bend;
- if the bending exceeds the mark of 10 mm, then this means that the belt is weakened and need to pull it a bit.
An experienced motorist will be able to determine its condition without any tools, but if the experience is not enough, it is better to use special measuring instruments when diagnosing. This will make the most accurate result.
If you have a dynamometer (instrument for measuring force), you can determine the state of the belt with it. It is necessary to pull the belt to the side. During the applied effort in 10 kgf, the product should not be fed by more than 15 mm. Otherwise, it is necessary to carry out a procedure for its stretch.
Preparatory stage
Initially, it is necessary to inspect the generator itself and, if necessary, clean the contacts. For cleaning it is better to use a pure rag, pre-dipped in gasoline. Then you should prepare the following tools for work:
- metal plank;
- the device for measuring length (the line is suitable);
- mounting;
- a set of keys (only one key will be required - on 17).
To make it easier to work, the car needs to put on the observation pit (if it is, of course). First you need to get rid of the engine mudguard, then weaken the fixing nut on the stretch bar. Now from the observation pit it is necessary to maximize the mounting of the bracket with the generator. Now you can proceed directly to the stretch.
Belt suspended methods
For the execution of the belt tension, two methods can be used - using a special adjustment plank or bolt. The choice of the method depends on the car model and the availability of necessary fixtures. Consider each of the methods separately.
Tint adjustment plank
An excellent "Dedovsky" method, applicable to older models (more often, the owners of vases are used). Its essence is to move the bar with the generator, which it is attached to the car engine. This will allow you to change the level of tension. But first it is necessary to weaken the fastening nuts fixing the arcuate bar.
Algorithm of belt tension by means moving the plank:
- unscrew the fixing elements that the arcuate plank is attached;
- using the mount, gently move the generator along the plank;
- selecting the right position of the generator, tighten the nuts.
In this procedure there is nothing complicated, so if it was not possible to achieve the optimal degree of tension from the first time, then the stretch can be reused.
Tings adjusting bolt
Conducting a bolt adjustment of the generator belt tension is more modern and effective method. To perform the procedure, you must follow the following instructions:
- unscrew the fasteners of the generator (you need to unscrew until the end, but only weaken);
- slowly assigned the generator aside by turning the adjustment bolt at the clockwise adjustment. At the same time, you need to rotate the adjusting bolt and check the strap on the stretch;
- reaching a certain level of stretch, tighten the fastening nuts of the generator.
On a note! Upon completion of the procedure, you must check the crankshaft several times using the key for this. Then you need to conduct a control measurement of the stretch. If everything is in order, you can operate the car. Next estimate The stretch needs to be held after a non-breaking trip.
As a conclusion
Regardless of the method of the selected method, after adjusting the tension, you need to re-diagnose. This is due to the fact that upon completion of the procedure, the driver may well tighten the fastening elements, as a result of which, under the influence of the vibration of the body and the engine during the movement of the vehicle, the belt may replacing again.
Even with the maximum movement of adjusting mechanisms, the belt can still be tensioned. This indicates a malfunction of the product and the need to replace it. According to statistics, the replacement should be carried out every 60-80 thousand km. If you spend the strap strap yourself, there is no possibility, then you can always seek help from specialists. Employees hundred for a small amount will eliminate the malfunction quickly and efficiently.
Video - How to pull the VAZ 2110 generator belt
