Timing chain for Toyota Camry 40: causes of wear and preparation for repair, instructions for removing and replacing parts, necessary tools and materials

As for the chain drive, we can say that it is somewhat more reliable, since cases of its breakage are still rare. The same cannot be said about the belt drive.

Timing chain 2AZ-FE

1 — accessory drive belt, 2 — engine wiring, 3 — timing chain tensioner, 4 gasket, 5 — timing chain cover, 6 — accessory drive belt tensioner, 7 — crankshaft pulley, 8 — front crankshaft oil seal, 9 — timing chain, 10 — tensioner shoe, 11 — crankshaft position sensor rotor, 12 — ignition coil, 13 — crankcase ventilation hose, 14 — crankshaft position sensor, 15 — cylinder head cover, 16 — O-ring, 17 — generator, 18 — intake camshaft sprocket, 19 — exhaust camshaft sprocket, 20 — timing chain guide, 21 — timing chain guide, 22 — crankshaft sprocket, 23 — oil pan.

Removing and installing timing chain 2AZ-FE

Disconnect the cable from the negative terminal of the battery. Remove the right front wheel. Drain the engine oil. Remove air duct No. 1 of the air filter. Remove the air filter. Remove the air filter bracket. Remove strut No. 2 of the right engine mount. Remove the accessory drive belt. Remove the generator.

Disconnect the connector, remove the “+B” terminal. Unscrew the 2 bolts and remove the generator. Disconnect the brake fluid expansion tank. Note: Do not drain the brake fluid. Place the expansion tank straight and cover it with a cloth. Disconnect the power steering fluid expansion tank. Remove the engine mount rod.

Remove the engine center mount bracket. Remove bracket No. 2 of the right engine mount. Remove the ignition coils. Disconnect the ventilation system hose. Disconnect hose No. 2 of the crankcase ventilation system. Remove the cylinder head cover. Set the piston of the first cylinder to TDC on the compression stroke. Remove the timing chain tensioner.

Note: Do not rotate the crankshaft with the tensioner removed. Remove the right engine mount bracket. Jack up the engine oil pan by placing a wooden spacer between it and the fifth jack. Loosen the two front engine mount shock absorber nuts. Remove the three right engine mount shock absorber nuts. Using the special tool, loosen the bolt (A).

Temporarily secure the right engine mount shock absorber. Temporarily secure the right engine mount bracket. 24. Disconnect the power steering pump.

Unscrew the bolt and nut, remove the tensioner of the accessory drive belt.

Remove the crankshaft pulley,

Using the special tool, fix the crankshaft and loosen the bolt.

Using a puller, remove the crankshaft pulley. Note: Apply grease to the screw and center of the bolt. 27. Remove the crankshaft position sensor. Remove the bolts and nuts, use a razor blade to cut off the sealant, and remove the oil pan. Remove the timing chain cover.

Remove the crankshaft position sensor rotor. 31. Remove the chain tensioner shoe. 32. Remove the chain guide. 33. Remove the timing chain. 34. Install the chain guide and tighten the 2 bolts. Tightening torque………………….9 Nm 35. Install the timing chain.

Align the chain link with the colored mark (blue or orange) with the timing mark on the crankshaft sprocket.

Align the timing marks on the camshaft sprockets with the colored chain links (yellow or gold) and install the timing chain. 36. Install the chain tensioner shoe and tighten the bolt. Tightening torque…………………..19 Nm

Install the crankshaft position sensor rotor with the “F” mark facing up.

Install the timing chain cover. Note: - Clean and degrease adjacent surfaces. — Install the cover within the time specified in the instructions for use of the sealant. — Bolts must be tightened within 15 minutes after installation. — Do not start the engine within 2 hours after installation.

Apply a 2mm bead of sealant to the locations shown in the illustration.

Rotate the crankshaft 90° counterclockwise, aligning the hole on the drive sprocket with the groove on the pump housing.

Insert a rod with a diameter of 4 mm into the sprocket hole, fixing it, and unscrew the fastening nut. c) Unscrew the fastening bolt, remove the oil pump drive chain tensioner with the spring. d) Remove the oil pump sprocket and drive chain. 4. Install the oil pump drive chain, a) Install the crankshaft with the key to the left.

Install the oil pump shaft with the cutout facing up.

Install the chain onto the sprockets, aligning the links with the colored markings with the markings on the sprockets.

Install the sprockets on the shafts. Temporarily tighten the fastening nut. Install the oil pump drive chain spring and tensioner.

Tightening torque…………………..12 Nm Align the hole on the drive sprocket with the groove on the pump housing.

Insert a rod with a diameter of 4 mm into the sprocket hole, fixing it, and tighten the fastening nut. Tightening torque………………….30 N m

Rotate the crankshaft 90° clockwise with the key facing up.

Install the timing chain guide. Tightening torque……………………….9 N m.

Source: https://toyoinfo.ru/news/1/2013-10-14-1074

Description of the 2AZFE motor device

The 2AZ FE internal combustion engine was assembled not only in Japan. Assembly plants are located in China and the USA. The internal combustion engine itself is an aluminum cylinder block with cast iron liners. The liners were fused inside the 2AZ FE engine block.

The surface of the cylinder block was not specially leveled. Thanks to the uneven surface, heat dissipation increased. The 2AZ FE engine stopped getting very hot.

The cooling jacket of the series motor is open. The cylinder head consists of 16 valves. There are no hydraulic compensators on the engine. This drawback is noted by many experienced car owners. After 100 thousand kilometers you have to manually adjust the thermal clearances of the 2AZ FE valves. If you continue to drive with unadjusted valves, performance drops and the internal combustion engine begins to stall at idle.

A valve timing system was installed on the engine on the intake camshaft. This made it possible to increase the power of the unit. The timing mechanism drive was equipped with a chain rather than a belt. A block of balancer shafts was installed on the engine. It was included in the mandatory configuration of any engine with a volume of over 2 liters.

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The crankshaft is forged. It consists of 5 necks and 8 counterweights. The crankshaft is located on the main bearing caps. The axis itself is shifted by 10 mm relative to the axes of the cylinders. In production, this feature is called desaxage. Thanks to the displacement, engineers reduced wear on the crankshaft and reduced the force of the piston on the cylinder.

Attention! Major repairs are not provided by the manufacturer.

However, the balancer shafts coming after the crankshaft create another disadvantage for such engines. They wear out quickly. Because to reduce the noise produced by the shafts, gears made of polymer material are used.

Pistons for the 2AZ FE engine are made of light alloy metal. The skirt on them is moderately lightweight. An anti-friction coating is applied to it. Therefore, the skirt does not wear out after a short period of engine operation.

The pistons are connected together with the connecting rods via pins. The latter are specially made to float so as not to disrupt the work of the porno.

On modifications of the 2AZ FE engine after 2006, a special shirt appeared. It promotes more powerful circulation of coolant in the upper part of the engine. This has a beneficial effect on heat dissipation and thermoregulation of the motor.

The timing belt is driven by a single row chain. The chain is single-row, and its link pitch is 8 mm. The device is tensioned using a special tensioner with a ratcheting mechanism. The chain is lubricated by a separate oil nozzle.

VVTi operates on the intake camshaft. Changes phases by 50 degrees. It is the weak point of the unit. When changing the timing chain, the VVTi sprocket will also need to be replaced.

The 2AZ FE oil pump is located in the crankcase. The trochoid type pump is driven by the operation of another circuit that comes to it from the crankshaft. Experienced mechanics note that this improvement has increased the number of moving parts. This reduced the service life of the engine, since a large number of moving parts are subject to rapid wear, and major repairs are not provided. However, thanks to the additional chain, the conditions for pumping lubricant when starting the engine in the northern regions were improved.

A mechanical thermostat is used for cooling.

And the intake manifolds are located at the rear. For release - from the front. The intake manifold is made of high-strength plastic. This reduced engine noise and did not affect the start of the 2AZ FE engine at low temperatures.

The AZ engine series includes the following models:

1AZ FE;
1AZ FSE;
2AZ FSE. This is a similar engine to the 2AZ FE, which was produced until 2009;
2AZ FXE. This engine was created for hybrid vehicles. Works according to the Atkinson cycle. The camshafts and pistons in this model are already installed differently. It has a high compression ratio of 12.5 mm. Has a power of 130 to 150 horsepower.

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For the 2AZ FSE, the main problem, according to experienced mechanics, is the failure of the cylinder head threads.

Toyota Camry timing chain replacement

It is the replacement of the chain that is the subject of our conversation. When to change the chain The main advantage of a rubber Toyota Camry timing chain replacement is its relatively silent operation. Its low cost is also noted. But rubber stretches, and there are a large number of cases where the belt drive jumped over the teeth and broke off.

In this regard, a chain drive is much more reliable. It almost never breaks, but it has one significant drawback - it makes noise during operation.

Of course, in modern cars, noise insulation is at its best, but with a chain it is very difficult to determine other unhealthy noises that the engine makes. And the chain is more expensive than the belt and changing it is somewhat more difficult.

But it is necessary to change the chain drive, because even iron chains sometimes break. Toyota Camry replacing the timing chain first on the crankshaft, then on the driven gear.

Install the drive gear on the lower chain and then on the upper chain. Tighten dampers. Tighten the chains by turning the camshaft counterclockwise with a wrench, but not the intermediate and crankshaft!

Replacing the timing chain on a Toyota Camry

After assembling the timing belt, install the cover, treating the sealing surface with sealant. Next, you should secure the hydraulic tensioners and the crankshaft pulley. Then the cylinder head cover, also treated with sealant.

Connect the power steering and ignition, install the radiator. The timing belt is one of the key factors that determines the efficiency of the engine, and the replacement process is quite complicated.

Replacing Timing Chain Toyota Camry 30

In addition, the cost of replacement materials will be about 20 rubles. When replacing a Toyota Camry timing chain, be sure to pay attention to the quality of the chain and associated consumables - replacement must be made only with original spare parts.

Also, when making adjustments or replacements, a special tool will be required. In addition to various wrenches with different head sizes and screwdrivers, devices are needed to adjust the chain tension.

If repairs are required, the dismantling procedure is carried out as follows: It is necessary to ensure the electrical safety of the vehicle by disconnecting the battery terminal.

We unscrew the two bolts securing the pipeline holders to return the hydraulic fluid. We move the pipeline to the side.

Remove the right engine mount bracket by unscrewing its three bolts. We remove the Toyota Camry tensioner mounting pin from the engine BC. Replacing the timing chain. We unscrew the 12 bolts and 2 nuts securing the cover to the BC and remove it. We remove the toothed disk of the position sensor from the crankshaft pulley. Unscrew the bolt and remove the timing chain tensioner shoe.

Before installing the crankshaft position sensor back, its O-ring should be lubricated with machine oil.

Replacing the timing chain of Toyota Camry XV40

Unscrew the two bolts and remove the timing chain guide. After unscrewing the bolt, remove the guide bracket and remove the timing chain. The Toyota Camry 40 was produced with 2 power units. Both engines use a chain to drive the timing mechanism.

For replacement, you can use both original spare parts and their analogues. A completely simple way to reduce fuel consumption has been found!

Source: https://nesthotel.ru/toyota/zamena-cepi-grm-tojota-kamri-i.html

Replacing the timing chain on a Toyota Camry

Toyota Camry is a popular car on Russian roads. Great demand was ensured due to the good price-quality ratio, as well as adaptability to domestic roads.

However, any machine mechanism has a finite operational life, after which it fails. Frequent problems include broken or stretched timing chains. Below you will find information on choosing a reliable timing chain and replacing it. Considering that there are two of them - going to the camshaft and crankshaft - the article discusses the replacement of both chains.

The timing chain mechanism controls the gas flows in the engine cylinders, changing the phase of their operating mode. This leads to heavy loads on the timing chains, which sooner or later fail and need to be replaced.

general information

The Japanese automaker equips the Toyota Camry with two types of engines: 2AZ-FE (4-cylinder in-line 2.4, 2.5 L) and 2GR-FE (6-cylinder V-shaped 3.5 L).

The forced version is offered at a higher price, but car enthusiasts quickly discovered its drawback - during a cold start, after 100 thousand km, the engine makes characteristic noises, indicating that the tensioners are coming off.

Therefore, the forced model quickly lost demand and in most cases the 2AZ-FE engine is chosen.

Based on the body type, there are two versions of the car on domestic roads: the older V40, released in 2006, and the V50, which appeared on the market in 2011, and was restyled 3 years later. The vast majority of models have front-wheel drive.

Preparing to replace the timing chain

For the engine, the basic package includes an original chain from the Toyota manufacturer. The following analogues are also suitable for installation:

RoadRunner RR1350628011;
ASParts AS4674;
Ruei RU28106.

The cost of the first two analogues and the original is about 2 thousand rubles. For the latter you will have to pay up to 6.5 thousand rubles. You will also need components, without which replacement does not make sense in terms of extending the service life of the engine:

Chain tensioner – 1500 rub.;
Calmizer – 2500 rub.;
Damper - up to 3500 rub.

The total budget for replacing the timing chain will be from 10 to 14 thousand rubles.

The main factor in operation is the presence of metal, which is bored out during wear, and only then in the mechanism. Lightening the weight of a new chain (single-row roller-link) due to the loss of metal only leads to faster failure. A break in a roller-link chain can still be predicted for several reasons during operation:

A rumble, loud noise, knocking becomes audible in the engine;
Vibrations are felt in the cabin;
More intense oil consumption, accompanied by engine overheating;
A decrease in the effective engine power, accompanied by the failure of the gas pedal.

And most importantly, if the metal cracks at the link, these chains, due to their strength, can still support the operation of the engine, and the car owner has time to replace it in advance.

The plate-link chain guarantees unpredictable(!) failure. With a crash of metal, it is unable to withstand the load and immediately breaks off! Of course, there is nothing worse than being on the road, or moreover, on a country road in a situation where the car is completely paralyzed. You should get rid of it at the first opportunity!

Replacing the timing chain

The timing chains are quite “hidden” in the engine system and will require disassembly to access them. First you need to disconnect the peripheral mechanisms for full access to the engine:

Remove the radiator, generator and pumps;
Disconnect the power steering pump;
Loosen the clamp and disconnect the coolant hose.

Next comes the analysis of the engine itself. The process can be complicated when the cover screws are unscrewed and there is sealant instead of a gasket:

Unscrew the bolts and remove the cover;
Disconnect the water pump;
Remove the crankshaft timing sensor;
Remove the pulley with the oil sump.

Technical characteristics of the 2AZ FE engine

The unit is intended for installation on front-wheel drive vehicles: cars, vans, SUVs. In the domestic market of the Land of the Rising Sun it had a slightly changed model name: 2AZ FSE.

The table shows the technical characteristics of the 2AZ FE engine.

Parameter	Meaning
Type	Row
Nutrition	Injector
Valves	16
Cylinders per valve	4
Maximum power in horses	170
Torque	225 Nm
Compression ratio	9,8
Cylinder diameter	88.5 mm
Ecoclass	4
Engine life	400+ thousand kilometers
Fuel type	AI 92

Attention! This engine has been upgraded a couple of times. Therefore, slight changes in technical specifications for various modifications are possible.

According to technical characteristics, the engine consumes oil per 10,000 km - 1,000 g. However, during the production of versions after 2006, the engineers made a mistake and in these models the oil consumption increased significantly. Car owners note this defect as the hallmark of all 2AZ FE series engines after 2006 and until 2021.

Replacing the timing chain on a Toyota Camry

On some Toyota Camry models, a chain drive is installed to ensure synchronized operation of the crankshaft and camshaft. In addition, it starts the pump in the engine cooling system.

Unlike the belt drive, which is also used on other Camry models, it is characterized by increased reliability and long service life. Replacing the timing chain on a Camry XV50, for example, is not declared by the manufacturer, i.e. the reliability of this mechanism is guaranteed by them. However, it is not always possible to do without replacing the timing chain on a Camry XV40, for example.

Why is it necessary to replace the timing chain on a Toyota Camry?

Replacing the timing chain on a Toyota Camry

Car reliability is a parameter that depends on many factors. It is this indicator that is often decisive for drivers when choosing a car.

A timing chain is installed on the Toyota Camry.

Among car enthusiasts, there is still debate about which mechanism is better - a chain or a belt? The answer is clearly not obvious; each mechanism has both advantages and some disadvantages.

However, the main positive characteristic that a chain drive has is its high level of reliability (on average, a chain mechanism lasts about 200,000 kilometers traveled by a car).

Also, replacing a timing belt is very similar in its procedure to that of a chain. However, if this unit is replaced on machines of 2013 or earlier, this process will cost the owner a considerable amount.

Reasons for replacing the belt mechanism

After 2013, Camry cars were produced with engines of 3.5 and 2.4 liters. Such engines are relatively reliable and can easily (with appropriate maintenance) last more than 300,000 kilometers. At the same time, two engines are equipped with a timing chain drive, and there are not many problems with this unit.

However, after a long mileage or a long service life (more than 6 years), the chain tends to stretch, which can lead to an increase in fuel consumption (although this car, due to its dimensions, is not distinguished by modest consumption, problems with the mechanism will lead to an increase in “appetite” up to 5 liters per hundred kilometers). Also, a malfunction of this unit will lead to a loss of power (which can have a critical effect on cars with a 2.4-liter engine). Cars produced in 2013 and later received a more advanced unit; it has more acceptable wear resistance characteristics.

How to change the mechanism

It is worth noting that the independent process of dismantling and installing a chain device is quite labor-intensive, and it is not recommended to carry out this procedure without the appropriate repair skills (not basic, but professional).

In addition, the cost of materials for replacement will be about 20,000 rubles (when purchasing, be sure to pay attention to the quality of the chain and related consumables - replacement must be made only with original spare parts).

Also, when making adjustments or replacements, a special tool will be required. In addition to various wrenches (with different head sizes) and screwdrivers, devices are needed to adjust the chain tension. If repairs are required, the dismantling procedure is carried out as follows:

It is necessary to ensure the electrical safety of the car by disconnecting the battery terminal.
Then you should lift the car using the appropriate devices, remove the right front wheel and drain the engine oil.
Next, you need to remove the air filter and adjacent pipes.
The next step is to dismantle the generator and engine support strut (right).
Then you need to disconnect the cylinder head cover and ignition coils.
The next step is to remove the timing chain tensioner.
Next comes the removal of the power belt mechanism and the engine crankshaft pulley, and the crankshaft sensor should also be removed.
Then you need to remove the oil pan (by removing the standard sealant).
After these procedures, you need to begin dismantling the attachments (rotor, shoe and chain guide).
Then you should install a new chain and align all the marks using a special key.
Reassemble the structure in reverse order.

Conclusion

Replacing the timing chain on a Toyota Camry 2.4 yourself is a rather complex process that must be performed with the help of one or more assistants, and the work can last several hours.

How to change the mechanism

It is worth noting that the independent process of dismantling and installing a chain device is quite labor-intensive, and it is not recommended to carry out this procedure without the appropriate repair skills (not basic, but professional).

Replacing Chain Toyota Camry 3.5

Car reliability is a parameter that depends on a huge number of reasons. Replacing the valve cover gasket on a Toyota Camry 2004 V 2.4. Do it yourself. Previously, how to clean leather seats and floors on a Toyota Camry 40 2.4l, then 2az-fe - replacing the chain.

This particular indicator is often decisive for drivers when choosing a car. A timing chain is installed on the Toyota Camry.

There is an ongoing debate among car owners about which mechanism is better - a chain or a belt? The answer is obviously not obvious; each mechanism has both advantages and some disadvantages.

But the main positive feature that a chain drive has is the highest level of reliability (the chain mechanism on average lasts about 200,000 km traveled by the car).

Also, replacing the timing belt according to its own procedure is almost in all respects similar to that with regard to the chain. But if this unit is replaced on machines of 2013 or an earlier owner, this process will cost a large amount.

Reasons for replacing the belt mechanism

After 2013, Camry cars were made with engines of 3.5 and 2.4 liters. Replacing the timing belt. Why timing chains break on modern Toyota Land Cruiser 200.

Such engines are relatively reliable and can quietly (with proper maintenance) last more than 300,000 km. Replacing the chain, replacing the valve cover gasket for Toyota Camry Toyota Camry 2.4 vs 3.5.

With all this, the two engines are equipped with a timing chain drive, and problems with this unit are not so small.

But after a huge mileage or a long service life (more than 6 years), the chain tends to stretch, which can lead to an increase in fuel consumption (although this car, due to its dimensions, does not have moderate consumption, problems with the mechanism will lead to an increase in “appetite” up to 5 liters per hundred km). Kia kia rio 3 (Kia Rio 3) kia rio 3. Removing and installing the rear bumper.

Also, a malfunction of this unit will lead to a loss of power (which can have a critical effect on cars with a 2.4-liter engine). This article discusses the timing chain for Toyota Camry 40, the cost of the Camry 40 timing chain, the frequency of replacing the chain, and a description of the process of replacing the chain. Cars 2013 and later received a more advanced unit; it has more applicable wear resistance features.

How to change the mechanism

It should be noted that the independent process of dismantling and installing a chain device is quite labor-intensive, and it is not recommended to create this function without the appropriate repair abilities (not basic, but professional).

In addition, the price of materials for replacement will be about 20,000 rubles (when purchasing, be sure to pay attention to the quality of the chain and related consumables - replacement should be created only with unique spare parts).

Also, when making adjustments or replacements, you will need a special tool. In addition to different wrenches (with different head sizes) and screwdrivers, devices are needed to adjust the chain tension. Replacing spark plugs for Ford Focus 3 Ford Mondeo. Failure of Ford Focus 3. On. Replacing the timing chain of Toyota Camry 2.4 and 3.5. If repairs are required, the dismantling procedure is done as follows:

It is necessary to ensure the electrical safety of the car by disconnecting the battery terminal.
Then you should lift the car using the appropriate devices, remove the right front wheel and drain the engine oil.
Next you need to remove the air filter and adjacent pipes.
The next step is to dismantle the generator and the engine support strut (right).
Then you need to disconnect the cylinder head cover and ignition coils.
The next step is to remove the timing chain
Next comes the removal of the power belt mechanism and the engine crankshaft pulley, and the crankshaft sensor should also be removed.
Then you need to remove the oil pan (by removing the standard sealant).
After these procedures, you need to begin dismantling the attachments (rotor, shoe and chain guide).
Then you should install a new chain and align all the marks using a special key.
Reassemble the structure in reverse order.

Conclusion

Replacing the timing chain on a Toyota Camry 2.4 yourself is a rather complex process that must be performed with the help of one or more assistants, and the work can last several hours.

Source: https://autoviber.ru/zamena-cepi-tojota-kamri-3-5/