Chevrolet Cruze what is the chain or timing. What is on the Chevrolet Cruze, timing chain or belt. Chain or belt. What's better

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Asks: Alexey Koshelev.
Essence of the question: what timing mechanism is installed on the Chevrolet Aveo?

Hello. I choose Aveo for myself now after restyling, many haut, but I like this non-standard design. Heard that there is a chain? Is it true? Which of the Aveo engines is the chain on?

In your case, there will only be a belt. Chains were put on the past generation.

Motor without chain.

On an aspirated volume of 1.2 liters of 16 valves on the Chevrolet Aveo, a chain gas distribution mechanism is installed. But such an engine was on the previous generation of cars.

Timing chain engine 1.2 16 valves.

Change the chain after the vehicle has passed 150,000 kilometers ... In most cases, the chain can not only be changed, but also tightened, which cannot be done with a belt that must be completely replaced.

Chain resource

The chain life can depend on many factors.

Including from the operating conditions of the engine. In general, the reviews of the owners confirm this, the timing chain can go through the order 200,000 kilometers without repair.

For this reason, many believe that a chain is more reliable than a belt. But the belts themselves on the latest Aveo models are distinguished by their reliability and quality. They can easily rotate two camshafts (85 kW engine and 115 hp) and sixteen valves. Also, such motors are distinguished by an improved gas distribution system and economy.

Which is better to choose: a chain or a timing belt?

Timing belt on the Chevrolet Aveo.

Replacing a timing chain or belt is a rather complicated procedure that requires certain skills, and therefore it should only be trusted by professionals at a service station.

It should be noted that the condition of the chain and its resource will largely depend on the oil pressure in the engine, its condition and quality. If you follow certain operating conditions that are spelled out in the manual for the car, then the chain can last long enough. It is also important to use quality consumables and oils.

Timing belt on a 1.4 liter engine.

A modern car can clearly independently track all changes that occur in the timing, and also signal this to the driver with a message on the instrument panel.

Overview of the chain motor on the Chevrolet Aveo

conclusions

If the machine is repaired and serviced in a timely manner, as a result of which all timing parts are changed on time, this will help avoid costly repairs to the entire engine, which can be caused by damage to the timing chain or belt.

The frequency of replacing the timing belt on a Chevrolet Cruze is 60,000 km, or every 4 years (whichever comes first). However, it is recommended to check the timing belt every 100,000 km. When checking, pay attention to the condition of the belt. Replacement is needed if its teeth are worn out, cuts, cracks, folds appear, the fabric begins to peel off from the rubber. There should be no protruding threads or delamination on the end faces, and the normal outer surface of the timing belt has no bulges or grooves.

What you need to replace the Chevrolet Cruze timing belt

In addition, traces of oil are unacceptable on it - it quickly destroys rubber materials; such a belt should be replaced immediately. As a rule, oil stains the belt due to leaky crankshaft and camshaft oil seals. Be that as it may, the cause of the oil leak must be eliminated.

It is worth noting that the immediate procedure for replacing the Chevrolet Cruze timing belt will have several preparatory stages. The simplest of them are recommendations to install a car on a pit, overpass or lift, and acquire the necessary tools and consumables.

To replace the timing belt, you will need: keys for 10, 14, 17, sliding pliers, a hexagon for 5, a timing belt kit.

Before replacing the Chevrolet Cruze timing belt, it is necessary to remove the accessory drive belt, dismantle the air filter housing, remove the front right wheel and set the piston of the first cylinder to TDC. All these procedures (with the exception of wheel removal) are worth mentioning separately - these are the first steps in the instructions for replacing the timing belt.

Removing the air filter housing Chevrolet Cruze

To remove the air filter housing, you need a flat screwdriver and a 10 wrench. First, loosen the clamp of the supply hose and disconnect it from the air filter housing connection. Then squeeze the retainer and disconnect the power steering hose, which is held by the bracket on the air filter housing.

Next, you need to lift and pull the body holders out of the mountings on the body, and then disconnect the intake air sensor wiring harness from the bracket. Then disconnect the harness connector from the sensor. Remove the air filter housing by pulling the lower tube out of the throat from the air duct.

Removing the alternator belt Chevrolet Cruze

Removing the accessory drive belt, in principle, gives an idea of ​​how the Chevrolet Cruze alternator belt is replaced. To work, you need a key for 14.

Before proceeding with the removal of the belt, for convenience, you should remove the air filter housing.

It is very easy to remove the drive belt with your own hands - you need to loosen the belt tension by turning the tension roller clockwise with a key. After that, you can remove the strap from the pulleys, remembering how it was installed. Installation is upside-down.

Tags when replacing the timing belt Chevrolet Cruze

In order not to disrupt the valve timing when replacing the timing belt, the piston of the 1st cylinder is set to TDC (top dead center) of the compression stroke using marks on the camshaft pulleys. If set by the marks on the crankshaft, the piston of either the 1st or 4th cylinder may be at TDC.

Having installed the piston at TDC, you should check if the marks on the crankshaft pulley match. If they are not aligned, then the phases are violated - you need to remove the belt and turn the crankshaft until the marks coincide.

When installing the piston of the 1st cylinder at top dead center, the marks of the camshaft toothed pulleys should be opposite each other, while the mark on the crankshaft toothed pulley should be opposite the slot on the rear timing cover.

Watch an interesting video on this topic:

The surface of the toothed part of the belt should not have cracks, undercuts of teeth and peeling of the fabric from the rubber, and the reverse side of the belt should not have wear, exposing the cords, and traces of burning. There should be no delamination or loosening on the end surfaces of the belt. If damaged, the belt must be replaced. The belt must also be replaced if traces of oil are found on it (before replacing the belt, the cause of oiling must be eliminated) or when replacing a failed belt tensioner or guide roller.

Upon reaching a mileage of 150 thousand km, the belt must be replaced regardless of its condition.

We carry out the work with an assistant on a viewing ditch or overpass.

We start by removing the protection of the power unit.

From the bottom of the car with the head "13" we unscrew the four bolts securing the protection of the power unit to the subframe of the front suspension.

We remove the protection of the power unit, supporting it with an adjustable stop.

We take out two pistons connecting the flap and the fender liner of the right wheel at the same time.

Using the "8" head, turn off the three self-tapping screws for attaching the flap to the subframe.

Sliding the right flap down, we take it out from under the wheel arch liner and remove it.

We unscrew the self-tapping screws for fastening the fender liner of the right front wheel to the front bumper and fender and take out the caps securing the front part of the fender liner to the body, bend the front part of the fender liner and put it behind the brake disc.

To check the condition of the belt with the E-10 head, unscrew the two screws securing the upper timing drive cover.

Remove the cover.

Turning the crankshaft clockwise with the E-18 head by the screw securing the accessory drive pulley, ..

… Evaluating the condition of the timing belt.

The operation to replace the timing belt is quite complicated. At authorized dealer services, when replacing the belt, a special tool and devices are used to set the engine camshaft timing. Therefore, we recommend that you only replace the belt yourself with an experienced contractor who has the appropriate skills to repair modern engines.

To replace the timing belt, remove the accessory drive belt ...

To access the timing belt, dismantle the right support of the power unit.

We install a height-adjustable stop through a wooden block under the engine sump.

Remove the air filter.

Using the “15” head, we unscrew the two bolts securing the right support of the power unit to the spar, three bolts securing the support to the engine bracket and the nut securing the support to the mudguard of the body.

We take out the support from the engine compartment.

Right support of the power unit.

To access the ends of the camshafts, remove the cylinder head cover.

Pulling upwards, remove the engine management system wiring harness covers from the cylinder head cover holders.

We move the spring clip of the crankcase ventilation tube tip.

Remove the tube tip from the cylinder head cover fitting.

With the E-10 head, unscrew the 11 screws securing the cylinder head cover.

Remove the cylinder head cover.

For clarity, we show further operations on a dismantled engine.

Before removing the belt, we set the crankshaft and camshafts to the TDC (top dead center) position of the compression stroke of the first cylinder.

To do this, turn the crankshaft clockwise by the screw securing the accessory drive pulley until the mark on the accessory drive pulley coincides with the mark on the lower timing cover.

In this case, the grooves made on the shanks of both camshafts should be located parallel and practically at the same level with the surface of the cylinder head adjacent to the cylinder head cover.

If the grooves on the camshaft ends do not occupy the indicated position, turn the crankshaft one more revolution (360º) clockwise and check again that the crankshaft and camshafts are installed correctly.

Using the E-18 head, unscrew the screw that secures the accessory drive pulley. In order to keep the crankshaft from turning, we put stops under the wheels of the car, turn on the fifth gear in the gearbox and ask the assistant to firmly press and hold the brake pedal.

If in this way it was not possible to unscrew the pulley fastening screw, then, by unscrewing two bolts with the head "15", dismantle the dirt-protection plate that covers the gap at the junction of the gearbox housing and the engine oil pan - next to the housing of the inner hinge of the right wheel drive.

We insert a slotted screwdriver through the slot between the flywheel teeth and rest it on the differential bearing cover, thereby blocking the crankshaft from turning.

Having unscrewed, we take out the screw securing the auxiliary drive pulley.

Remove the pulley.

Using the "15" head, unscrew the three bolts securing the bracket for the right support of the power unit (the coolant pump pulley has been removed for clarity).

Remove the bracket.

Using a slotted screwdriver, release the retainer of the middle timing cover on one side ...

... and on the other hand.

Lift and remove the middle timing cover.

Using the E-10 head with an extension cord, unscrew the four screws securing the lower timing cover.

Remove the cover .

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Engine timing gear drive.

1 - belt tensioner; 2 - the actuator of the intake camshaft phase control system; 3 - actuator of the exhaust camshaft phase control system; 4 - timing belt; 5 - belt guide roller; 6 - toothed pulley of the crankshaft

We again check the correctness of the engine camshaft timing.

With the accessory drive pulley removed, check the coincidence of the mark on the crankshaft toothed pulley with the mark on the cylinder block cover.

The marks on the toothed pulleys of both camshafts must be opposite each other.

If necessary, turn the crankshaft to the required position using the screw for securing the accessory pulley, screwed into place through a suitable thrust bushing.

In order to secure the camshafts from turning when replacing the belt, it is necessary to make a device from a metal plate or angle.

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Camshaft locking tool.

We insert the device into the grooves on the camshaft shanks.

The plate will fix the shafts relative to each other.

Attention! To avoid damage to the drive discs of the camshaft position sensors, install the plate so that it does not touch the discs. For this, two recesses are made in the plate.

To loosen the belt tension, insert the “6” hexagon into the roller hole and, turning the roller clockwise with the hexagon, release the belt tension and pull the belt off the roller.

Remove the timing belt from the camshaft and crankshaft toothed pulleys.

Timing belt, number of teeth 146, width 24 mm.

Caution: After removing the belt, the crankshaft must not be turned to avoid the valves sticking into the pistons.

If it is necessary to replace the tension roller with a Torx T-50 wrench, unscrew the screw of its fastening.

We shoot the video.

To replace the belt guide roller with a Torx T-50 wrench, unscrew the roller fastening screw.

We shoot the video.

When installing the tension roller, we introduce the protruding end of its spring (on the reverse side of the roller) ...

… Into the corresponding groove on the cylinder block cover.

Before installing the belt, check by the coincidence of the alignment marks (see above) that the crankshaft and the camshaft actuator housings of the phase control system are installed correctly. If necessary, turn the crankshaft and camshaft pulleys to the desired position. We put the belt on the toothed pulleys of the crankshaft and camshafts and wind the belt behind the guide roller. Turning the tension roller clockwise, we wind up the belt for it and release the roller. This will automatically tighten the belt.

We take out the fixing device from the grooves of the camshaft shanks. We turn the crankshaft two turns clockwise for the screw securing the auxiliary drive pulley.

Check the valve timing again. If the timing marks do not match, we repeat the procedure for installing the timing belt.

Tighten the screw securing the accessory drive pulley first to a torque of 95Nm. Next, turn it 30 °, and then another 15 °.

All other parts and assemblies are installed in the reverse order.

FUNCTIONAL PURPOSE OF THE TIMING CHAIN

The timing chain drive of the Chevrolet Cruze is part of the gas distribution mechanism and is involved in the transmission of torque from the crankshaft to the camshaft. The chain can connect them directly or participate in the work indirectly, for example, connecting the camshafts with each other, if there are two of them, while its functional purpose remains unchanged.

Monitoring the condition of the timing chain, replacing "dampers" and tensioners, is part of the scheduled maintenance of the car and plays an important role in the operation of the vehicle engine. It is necessary to monitor the condition of the gas distribution system regularly, as this directly affects the vehicle's power, sensitivity when supplying gas and fuel consumption.

FEATURES OF CHAIN ​​REPLACEMENT

In most engines of old car models, chains with roller links were used to transmit torque, often the components went in two or three rows, this made the timing chain a very reliable, almost eternal mechanism that did not need constant maintenance. Often the car traveled up to 300,000 km. and the chain of the mechanism received only lateral play, and the worst thing that could happen to the gas distribution mechanism was the jumping of the links, breaks were extremely rare. Over time, the trend in the creation of cars has become the production price, efficiency, environmental friendliness and the weight of the car's engine, which affects its power. In these conditions, manufacturers began to strive to replace the timing chain with a lighter, cheaper and easier to maintain timing belt. And those motors in the design of which the chains were preserved, the roller components were replaced with light plate links, more reliable than timing belts, but still not as strong as roller chains.

The Chevrolet Cruze timing chain has a number of features that fundamentally distinguish it from the timing belt.

1. The chain is a durable mechanism, its wear takes much longer than the timing belt, breaks occur, but much less often than with belt-driven engines.

2. An open circuit of the gas distribution mechanism occurs quite rarely, which means that an engine breakdown, requiring expensive overhaul, does not occur often.

3. Timing chains are quite noisy, but with the current level of car sound insulation, this parameter becomes not very important.

4. When the chain is worn out, its backlash and lateral runout occur, this indicates the need to replace the old chain with a new one. Since the metal part is sagging and lateral beating is accompanied by strong noise, it is simply impossible not to notice and not attach importance to it. The noise under the hood will be the first "call" indicating the need for vehicle maintenance.

5. The main disadvantage of replacing the Chevrolet Cruze timing chain is that it is located inside the cylinder block and it is rather difficult to assess its condition without training and experience. In addition, dismantling and replacement, with such a device, is a long and laborious process, which means it is expensive.

6. Tensioners and dampers are involved in the timing chain - these are consumables that wear out quickly and need more frequent replacements than the timing chain itself.

TYPES OF FAILURES

1. At the timing chains, with full serviceability, a natural course is observed, which is compensated by the tensioners when the oil pressure is applied. A malfunction is considered to be a strong lateral beating of the timing chain, which appears when the links are stretched. It is possible to determine the real degree of chain stretching only with a qualified inspection of the gas distribution mechanism.

2. Backlash is a direct stretch of the chain, which is observed during long-term operation, can lead to jumping of the chain links and malfunction of the gas distribution mechanism, this leads to a decrease in the sensitivity of the engine when the accelerator pedal is pressed and an increase in fuel consumption.

3. Opening the timing chain of the Chevrolet Cruze is the most dangerous damage to the engine, in the case of a chain drive of the motor it is not common, but it does occur. In the event of such a malfunction, the camshaft ceases to be associated with the crankshaft and can stop completely arbitrarily in such a position in which any of the valves of the gas distribution mechanism will be open. In this case, the piston, moving upward, may collide with the valve, which will lead to its deformation and the car engine will face serious repairs. It should be noted that the timing chain breakage does not happen unexpectedly, almost always this is accompanied by changes in the operation of the vehicle, a decrease in its power, a change in gasoline consumption and the occurrence of extraneous noise.

To prevent and prevent the operation of the gas distribution mechanism, it is necessary to periodically troubleshoot the timing chain, this will save the car engine from damage, prevent premature engine wear and increase its service life.

CAUSES OF WEAR

1. Operation of the Chevrolet Cruze car in extreme conditions. Frequent driving on unpaved roads, towing trailers, heavy loads, driving at high speeds leads to an increase in the load on the crankshaft, spinning it up to maximum speed, which leads to a stretching of the timing chain.

2. Since the timing chain is located inside the cylinder block, it is completely washed by engine oil and, as a result, is very sensitive to its quality. In the case of using high-quality synthetic oil containing specialized detergents in its composition, the service life of the timing chain is significantly increased.

3. The timing chain involves parts that regulate the tension of the chain, they are consumable and need to be replaced periodically. During maintenance of the car, it is necessary to check the degree of wear of the tensioner and "damper"; untimely replacement of these parts can lead to the chain stretching and jumping of the links.

SYMPTOMS OF MALFUNCTIONS

1. Increased consumption of gasoline by car;

2. Decrease in engine power; 3. The appearance of clanking and noise under the hood of the car when the engine is running;

4. Complete stop of the car on the move, when trying to start the engine does not start, and the starter rotates easier than usual;

5. Unstable operation of the Chevrolet Cruze engine at idle and in motion;

6. The emergence of shots in the receiver of the injector and the exhaust pipe.

All these malfunctions may indicate a shift in valve timing and a loosening of the chain tension. If you notice one or more signs of this list on your car, immediately contact the service station for an inspection.

HOW OFTEN DO YOU NEED TO REPLACE THE TIMING CHAIN

The frequency of replacement of any consumables for Chevrolet Cruze vehicles depends on the driving style and the mode of operation of the vehicle. With extreme driving style and aggressive use of the vehicle, it is necessary to replace the timing chain as it looses and wears out.

Under normal operating conditions, it is necessary to replace the timing chain as planned, every 100 - 150,000 km. mileage. If your car has an analog belt, it must be replaced a little earlier than the time recommended by the vehicle manufacturer.

Trust your car only to professional specialists who are able to correctly troubleshoot the timing chain, assess lateral runout and backlash, replace and correct the operation of tensioners, chain drive “dampers” and replace the Chevrolet Cruze timing chain.

Both the chain and the belt, in short. The first models from General Motors - Chevrolet first rolled off the assembly line in 1998. The line of engines at that time was represented by one copy with a volume of 1.4 liters (A14NET / NEL). A little later, engines with volumes of 1.6 and 1.8 liters were installed under the markings F16D4 and F18D4, respectively. The first engine with a volume of 1.4 had a pre-installed chain-type timing belt, the next two were classic in the form of a belt.

Briefly about the timing drive

The gas distribution mechanism is an important component of the engine. This unit drives the camshafts and crankshafts in motion. Under pressure, the combustible mixture is ignited in the combustion chamber, the car moves.

The belt, as a drive element, has become so popular that the percentage exceeds 75% of all technical equipment available on the market. Previously, the figure barely reached 25%.

Belt drive advantages and disadvantages

The vast majority of naturally aspirated Chevrolet Cruze engines are belt-driven. Among the many "pluses", we will designate the following:

  • ease of replacement, installation;
  • lack of lubricating medium;
  • low noise level. The noise figure is a record 15%.

At the same time, there are drawbacks, more precisely one, but significant - short-term service life. In practice, the mileage indicator does not exceed 70 - 80 thousand km. Provided an aggressive driving style or engine oil gets on the belt, the resource is reduced by a third. Given the many forgeries, the lifespan barely exceeds the 60,000 km mark.



Chain drive advantages and disadvantages

As already mentioned, the chain is only used on a 1.4 liter engine.

Advantages:

  • the duration of the vehicle's life. The real mileage is at least 150,000 km. With proper use of the machine, the resource reaches 180,000 km;
  • reliability;
  • structural strength.

Disadvantages are also present:

  • the greatest and main "minus" is excessive noise during operation;
  • the need to install additional parts for the full functioning of the mechanism, such as a tensioner, a damper;
  • systematic prevention, replenishment of the missing amount of lubricant. Otherwise, the chain will simply jam.

The tensioning of the chain links is a complicated process and is possible only if the tensioning rollers are in good working order. Under high oil pressure, the roller, together with a spring, regulates the chain tension during the rotation of the Chevrolet Cruze crankshaft and camshaft.

Chain or belt. What's better

It is impossible to answer the question unequivocally. Due to the fact that each has its pros and cons. The owner of a Chevrolet Cruze chooses a car based on his needs and requirements. There is a question about the choice of the type of drive, it is better to give preference to the belt one. Despite its short lifespan, installing a new belt is a matter of five minutes, unlike a chain.

If the Chevrolet Cruze is planned to be used in special climatic regions with negative temperatures, choose the chain drive side. The belt is less adapted to the cold. And if you take into account the ingress of ice water, the final decision is obvious.

Regardless of the type of pre-installed timing mechanism, carry out a technical inspection, install only high-quality and original parts, use a moderate driving style for the Chevrolet Cruze.

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