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Causes and treatment of damage to timing belt of automobile engine
- Jun 04, 2018 -

timing belt is a very important part, people need to constantly check the damage, abrasion, or loose, it of any damage, defect will eventually lead to the damage of the engine have serious and more expensive.The great torque and distortion of the timing belt will cause the belt to break, partially compress, stretch too much, and even crack.Therefore, people pay great attention to the maintenance of the timing system.

Over the years, new technology has created stronger and more durable timing belts. Does this mean that regular checks on timing systems can be avoided?The answer is no!In fact, the timing system should be examined more thoroughly on a regular basis.

Why should we emphasize the inspection of the timing system?The problem is now than timing belt pulley, idler and tension wheel more durable, in this case, you should not only check the timing belt itself, but also to check the related parts.

Although we know that it is difficult to avoid the pulley, the idler wheel and the tensioning wheel, a thorough examination of the timing belt is very difficult.But imagine if the timing belt itself did break, what would happen?Therefore, in order to avoid more serious faults, it is absolutely necessary to carry out a thorough inspection of the timing belt.

Periodic inspection and replacement of parts

If there is a component whose preventive maintenance can indeed prevent it, the timing system is one such mechanism.It is most correct to maintain according to the maintenance manual recommended by the manufacturer.Most on-time belts of the original factory (OE) quality have a life expectancy of at least 60,000 miles (1 mile = 1.61 km, same as below) - if anything.There is nothing wrong with the other parts, otherwise the belt will be damaged too soon.This is why an engine that has traveled 30,000 miles or more must have its timing belt checked when checking its engine compartment.It makes a lot of sense to do this, and it allows us to be on guard.

Factors that cause belt damage on time

The damage and failure of the timing belt depends on many factors, or the combination of these factors.These factors include the following aspects:

1. Normal wear and tear

Generally speaking, after several years of use, the timing belt has undergone millions of times of distortion and torsion deformation, which is easy to cause serious wear on the timing belt.However, manufacturers in the suggested timing belt replacement cycle, will consider the consumption, wear and tear, and as a result of normal wear damage should not happen in the recommended replacement cycle.If there is any damage, it indicates that the working condition of the timing belt is abnormal and there must be other problems. The following aspects should be emphasized here.

A) structural defect of the timing belt

Any defect on the belt will lead to an early end to the life of the belt, whether it is a small crack on the belt, imperfect synthetic materials, indentations or incisions.Nowadays, with the development of belt manufacturing technology, these problems have been well solved, and this is rarely asked

The topic.

B) the idler and guide wheels do not rotate flexibly

These pulleys are used to keep the timing belt aligned under tension and on the right track while minimizing the "drift" that causes the belt to break.If damaged due to poor quality bearings, bushings, and improper lubrication crank rod bending or pulley can't rotate freely, causes the timing belt on the pulley sliding surface, which can lead to friction heat production or grinding belt surface smooth.Friction heating will accelerate the aging of the belt, and the smooth surface will weaken the transmission of the belt and affect its timing function.

C) the tensioning wheel is not running correctly

Whether smooth pulley or toothed roller, like idler or guide wheel, tension wheel also need to provide the appropriate tension and rotate freely, so when the tension wheel can not work properly, like idler and idler pulley, will bring great influence the working life of the timing belt.

2. Correct or incorrect

When talking about the service life of the timing belt, we seldom discuss the influence of the non-positive belt guide rail on it, but this factor is very important.At work, every root timing belt around the track moving at a speed of thousands of revolutions per minute, opening and closing movement of the aspects of contact friction will lead to early damage to the belt.Before and after the installation of the timing belt, therefore, we should be part of the timing system the location of the installation to check carefully, see if for accurately, so that you can avoid because installation location are not allowed to bring damage to timing belt.

3. External pollution or damage

Anything in contact with the timing belt can damage the timing belt, which is why the entire system is covered when the timing belt works.However even for the most part of timing belt are protected, there will be a small amount of the oil inside the engine, such as oil, cooling fluid affect the timing belt, make its skid or chemical corrosion.In addition, small stones, metal chips or other debris can also be drilled into the timing belt area by their own means, which may also damage the belt.

4. Incorrect installation

This is the most successful part of our control, as long as we follow the instructions strictly.The instructions are attached to the replacement timing belt.The description is the result of actual research and testing.Do not use a lever or screwdriver to force the timing belt to extend into a normal orbit, as the timing belt is designed to not extend.When installing, it should release the tension on the timing belt, put the timing belt on the track first, and then restore the tension.Special positioning and tensioning tools should be used to install the belt so that the installation, positioning and tensioning belts are correct and all components can rotate smoothly.

Timing belt replacement kit

Now, most of the timing belt manufacturers and suppliers to provide timing belt replacement components, including the timing belt, tension pulley, idler and guide wheel, all the parts, and unified in a box.These parts are made to order according to special conditions of use.

According to a timing belt manufacturer

Experience: if the tensioning wheel or idler wheel fails to be replaced due to problems, it will lead to another failure of the timing belt shortly after the replacement.Or, conversely, if the new belt is malfunctioning, 50% of it is caused by not replacing the faulty tensioning or idler wheels.Therefore, it is best to install all components of the timing system simultaneously.

It's good for you and your customers.For you, knowing that the parts are new and in good working order will reduce the chance of rework.In addition, the simultaneous installation of all components of the timing system can also reduce the responsibility of the maintenance shop.Damage to a small part can quickly turn a gain into a huge loss.Know that ultimately your interests are based on the trust of your customers.Change once the customer is aware of all the meaning of the timing system components, they will know that you are really for their interests, which will undoubtedly bring you good business reputation and more trust.And your customers will benefit.In know you provide them with more reliability and security, they will feel comfortable when driving, because they already know, at the same time change the timing all components of the system, will greatly reduce the possibility of a serious fault.

In conclusion, the following four steps should be followed when dealing with the timing system:

When the car is 30,000 miles away, check the timing system to see if there is excessive wear.

2. Check the entire timing system, including timing belts, belt wheels, tensioning wheels and idlers.

3. Remind the customer that the replacement timing system should not exceed the replacement cycle recommended by the manufacturer.Once any fault is found, the replacement should be carried out immediately.

4. When replacing, all components in the timing system should be replaced and a matching set of components should be used.