Setting the timing marks on the VAZ-2108, 2109 and 21099 is necessary for the correct synchronization of the crankshaft and camshaft of the engine. It depends on whether the engine will start at all. Since the same engine is installed on these cars - a 4-cylinder 8-valve valve, then using its example, we will consider the entire procedure for setting timing marks.
Where are the timing marks on the VAZ?
On the 8-valve VAZ engine, there is one camshaft, it is much easier to set marks on it than on a twin-shaft. Let's analyze all possible ways to find the extreme position of the camshaft and crankshaft.
On the camshaft, as a rule, there is a mark on the pulley, such a small risk, and on the cylinder head there is a low tide with which this mark must coincide, or rather not even a low tide, but a protrusion on the shield, on the left side, if you look at the front of the engine and camshaft. Sometimes these marks are not observed, what to do in this case is described below.
The crankshaft is set according to the mark on the flywheel, on the gearbox, near the engine there is a hatch on top, covered with a rubber plug. If you remove the plug, then we will see the risks on the flywheel and the protruding rod from the engine, which should match. But there may be a problem here: the fact is that if the engine was disassembled and the flywheel was removed, then the flywheel can be put on either side, that is, the mark will be the devil knows where, but not at TDC. There is no guide or eccentric on the flywheel, which side you put, that it will become, at least turn it 180 degrees.
In this case, you can look for a mark in front of the engine - on the pulley and a return tide on the oil pump on the engine. But this is not the case on all motors, often this label is missing. What to do in situations where tags are not found? The fun begins, in fact, the marks on this engine are not needed, you can do without them.
How to set timing marks on a VAZ 2108, 2109, 2199 if there are no marks?
If the timing belt has not yet been removed and you just need to make sure that the timing marks are set correctly, unscrew the spark plugs first to make it easier to turn the crankshaft. Then jack the car up with the front wheel out of the way, shift into gear and spin the out wheel, this is the easiest way to turn the crankshaft.
Looking into the spark plug hole, you can see what position the piston is in, and if you stick a screwdriver in there and slowly turn the crankshaft, you can easily catch the TDC by looking at the screwdriver.
When the TDC is determined in this way, remove the valve cover and look at how the camshaft is installed, about how it should stand, a little lower.
If the timing belt has already been removed and you need to set the position of the crankshaft and camshaft, then you should start by making sure that none of the pistons is at top dead center. This is necessary so that when the camshaft is turned, the valves do not rest against the piston and do not bend.
Now we proceed to install the camshaft in the desired position. To do this, we need to remove the valve cover and look in which direction the cams are facing. In this case, we are not interested in all the cams, but only those that are responsible for the first cylinder, since we will set the TDC of the first cylinder.
In fact, it doesn’t make much difference to us which cylinder to set the camshaft to when there are no marks. But since we accept to exhibit on the first cylinder, then we will exhibit on it, especially since it is the closest.
Under the valve cover we will see a crankshaft, and there are a lot of cams on it (8 in total, 2 cams per cylinder). The first two cams are our first cylinder. And we need to set the shaft in such a way that these two cams simultaneously press on the valves. This will be TDC, valve overlap. At the same time, the cams of the fourth cylinder (two distant cams) will not press on the valves, but will look up with the letter V. This is TDC. The beauty is that the camshaft itself is correctly set at the desired point under the action of the valve springs and does not go anywhere. Now you can install the crankshaft.
Now you need to set the piston of the first or fourth cylinder to TDC, no matter which one you look at, they move synchronously. It is better to shine a flashlight into the candle hole, the piston will be visible there. When the piston presumably reaches top dead center, you need to insert something long, such as a screwdriver, into the spark plug hole. By turning the crankshaft back and forth a few degrees, you can catch the TDC, the screwdriver will come out to the maximum value. That's it, the marks are set, you can put on the timing belt.
The timing belt is put on first on the crankshaft, then on the camshaft, stretched as much as possible on the right side of the sprockets, and on the left side it is pulled on by the tensioner roller.
5 years ago
Welcome!
To begin with, let's analyze the meaning of the abbreviation "TDC" - "Top Dead Center". Below we consider its display on cars of the classic family.
Note!
You will need to stock up on a special key to turn the crankshaft pulley. In the absence of such, use the "36" head.
When should a piston be installed?
Before starting work requiring the removal of the timing chain from the vehicle. Usually, after this, the installation of the valve timing is disturbed, most likely you will encounter unstable operation of the car engine. Therefore, before proceeding with such a procedure, it is necessary to set the piston of the fourth cylinder to the TDC position.
We carry out installation on the VAZ 2101-VAZ 2107
Note!
Start by removing the cylinder head from the car engine! (Described in more detail in the article: " About the gas distribution phases by marks" in paragraphs "1-10").
Method 1
Standing next to the engine compartment, stick your hand deep down and turn the crankshaft pulley nut clockwise with a special wrench. It is shown in red in the photo below.
Note!
In the absence of the above tool, use the “36” head, first removing the crankcase protection (this process is described in detail in the article: “Replacing the crankcase protection”). Now, using the head, turn the crankshaft nut, but not from the top, but from the bottom of the car.
Method 2
Sit in the car, turn on the fourth gear, drive a few meters until all the marks match.
Method 3
You will need a jack. Using it, hang out one of the rear wheels of the car, turn on the 4th gear and turn the car wheel with your hand in the direction of travel.
Note!
In all ways, it is necessary to scroll the wheel until the marks converge!
Question?
Which method suits you and why did you choose it? (Write your answer in the comments)
How to make sure the labels match?
1) After removing the head, use one of the three methods listed above to set marks.
2) Check whether the marks of the gas distribution mechanism are installed relative to the body marks, for this:
Go to the engine compartment of the car and check the coincidence of the camshaft sprocket mark with the mark on the housing.
2.4. Installation of the piston of the first cylinder in the TDC position of the compression stroke GENERAL INFORMATION Warning Turn the crankshaft only by the bolt of fastening the pulley to it (it is forbidden to turn the crankshaft by the camshaft pulley). Recommendation Since it is inconvenient to turn the crankshaft by the pulley fastening bolt to it, you can do it in the following ways: .
Location of TDC marks VAZ 2110 /
2.4.1. Location of TDC marks GENERAL INFORMATION Location of TDC marks On engines mod. 21083, 2110, 2111 on the camshaft sprocket (protrusion) and on the back cover of the camshaft drive belt (shroud). On the engine mod. 2112 on the camshaft pulleys (protrusions A) and on the rear cover of the camshaft drive belt (slots B). All engines on...
Setting the piston of the first cylinder to the TDC position of the compression stroke Skoda Fabia /
2.2. Installing the piston of the first cylinder in the TDC position of the compression stroke GENERAL INFORMATION Warning Turn the crankshaft only clockwise (in the direction of shaft rotation) for the generator drive pulley mounting bolt. Do not turn the crankshaft by the camshaft pulley. Setting the piston of the first cylinder to the TDC position of the compression stroke is necessary so that when carrying out work related to the removal of the camshaft drive belt, the valve timing is not disturbed. Set the TDC according to the marks on the distribution pulleys ...
Top dead center (TDC) of the piston of the first cylinder Toyota Camry /
3.4. The top dead point (TDC) of the piston of the first cylinder THE GENERAL DATA The prevention The sequence of operations is made proceeding from the assumption that the distributor of ignition is established correctly. If it is necessary to determine the top dead center for the installation of the distributor, then set the piston of the first cylinder to the top dead center in the compression stroke, then set the ignition marks. Piston top dead center is the point through which each piston passes as the crankshaft rotates. Each piston reaches TDC at the end of...
Installing the piston of the first cylinder at TDC Volkswagen Golf III /
2.10.4. Installation of the piston of the first cylinder in the VMTGazoraspredelenie mechanism on cars Golf III is driven from the crankshaft by the camshaft drive belt (on some engines through the intermediate shaft). WARNING Be careful when repairing and operating the vehicle! In the event of a break, incorrect installation, etc., in all engines installed in cars of the Golf III family, a collision of a valve and a piston is possible, resulting in serious damage to the pistons and valves. If...
Setting the piston of the first cylinder to the TDC position of the compression stroke VAZ 2170 /
5.7. Setting the piston of the first cylinder to the TDC position of the compression stroke The piston of the 1st cylinder to the TDC position (top dead center) of the compression stroke is set so that when carrying out work related to the removal of the camshaft drive belt, the valve timing is not violated. If the valve timing is disturbed, the engine will not work normally. Set the TDC of the compression stroke according to the marks on the camshaft pulleys (when setting according to the marks on the flywheel or crankshaft pulley, the piston of either the 1st or 4th cylinder may be in this position). After that...
Bringing the piston of the first cylinder to the position of top dead center (TDC) The following description of the procedure is based on the assumption that the installation of the BB spark plug wires and the ignition distributor is correct. If it becomes necessary to bring the engine to TDC in order to correct the position of the distributor, the position of the piston in the first cylinder of the engine can be qualitatively determined by monitoring the change in compression pressure through the spark plug hole. Next, you need to achieve the alignment of the corresponding installation marks (see paragraph ...
Bringing the piston of the first cylinder to the top dead center (TDC) Nissan Maxima QX /
Bringing the piston of the first cylinder to the position of top dead center (TDC) The following description of the procedure is based on the assumption that the BB spark plug wires are connected correctly and the ignition distributor is installed. If it becomes necessary to bring the engine to TDC in order to correct the position of the distributor, the position of the piston in the first cylinder of the engine can be qualitatively determined by monitoring the change in compression pressure through the spark plug hole. Next, you need to achieve...
#1 Piston Top Dead Center (TDC) Location These dowel pins are for the ONLY purpose of checking crankshaft position when performing various engine overhaul procedures. DO NOT use them as locking tools to hold the crankshaft stationary while loosening or tightening the pulley or flywheel/drive plate bolts. TDC is the highest point in the cylinder that the piston reaches when the crankshaft rotates. Each piston is at TDC at the end of the compression stroke and also at the end of the exhaust stroke.
Bringing the piston of the first cylinder to the top dead center (TDC) Honda Civic /
Bringing the piston of the first cylinder to the position of top dead center (TDC) The following description of the procedure is based on the assumption that the installation of the BB spark plug wires and the ignition distributor is correct. If it becomes necessary to bring the engine to TDC in order to correct the position of the distributor, the position of the piston in the first cylinder of the engine can be qualitatively determined by monitoring the change in compression pressure through the spark plug hole. Next, it is necessary to achieve the alignment of the corresponding installation marks (see paragraph 9). ...
Top dead center (TDC) Opel Astra A /
3.1.4. Top dead center (TDC) GENERAL INFORMATION Synchronization mark on the timing belt cover, combined with the cut on the sprocket (indicated by arrows) - model C 16 SE Synchronization mark on the timing belt cover, combined with the cut on the sprocket (indicated by arrows) - model C 20 NE Synchronization mark on the camshaft sprocket, combined with a cut on the back cover of the timing belt (indicated by arrows) - model C 16 SE ...
Setting the piston of the first cylinder to the TDC position of the compression stroke VAZ 1111 /
10.1. Setting the piston of the first cylinder to the TDC position of the compression stroke You will need a "10" wrench, a wheel wrench Disconnect the wire from the “–” terminal of the battery. Setting the piston of the first cylinder to the position of top dead center (TDC) of the compression stroke is necessary so that when carrying out work related to the removal of the camshaft drive belt, the valve timing is not violated. Set the TDC to the marks on the camshaft sprocket. When installing according to the marks on the flywheel, alternator drive pulley or crankshaft pulley ...
Setting the piston of the first cylinder to the TDC position of the compression stroke Daewoo Lanos /
5.5. Setting the piston of the first cylinder to the TDC position of the compression stroke If the valve timing is disturbed, the engine will not work normally. Set the TDC according to the mark on the camshaft pulley (when installing according to the marks on the crankshaft pulley, the piston of either the 1st or 4th cylinder can be in this position). After that, make sure you match...
Bringing to the TDC position of the compression stroke of the piston of the first cylinder of the Jeep Grand Cherokee /
Bringing to the TDC position of the compression stroke of the piston of the first cylinder Top dead center (TDC) is the highest point of the piston stroke, determined by the rotation of the crankshaft. Each piston reaches TDC twice - at the end of the compression stroke and, again, at the end of the exhaust stroke, however, it is customary to mean the TDC position of the compression stroke by the TDC position. The distribution marks applied on the vibration damper (see illustration) mounted on the front crankshaft trunnion correspond to the TDC of the compression stroke of the piston of the first cylinder. Bringing the pistons to TDC is fundamental...
Setting the piston of the fourth cylinder to the TDC position of the Chevrolet Niva compression stroke /
4.9. Setting the piston of the fourth cylinder to the TDC position of the compression stroke The piston of the 4th cylinder to the TDC position (top dead center) of the compression stroke is set so that when carrying out work related to the removal of the camshaft drive circuit, the valve timing is not disturbed. If the valve timing is disturbed, the engine will not work normally. Set the TDC according to the mark on the camshaft sprocket (when installing according to the marks on the crankshaft pulley and on the front cover of the camshaft drive chain, either the 1st piston or ...
Piston Top Dead Center #1 (TDC) Isuzu Trooper /
3.3.4. Top dead center piston No. 1 (TDC) GENERAL INFORMATION Top dead center is the highest point that each of the pistons reaches during the rotation of the crankshaft. Since each piston reaches TDC on both the compression stroke and the exhaust stroke, for engine timing purposes, TDC is taken to be the position of the piston (usually piston #1) at the top of the compression stroke. The #1 piston and cylinder are located at the front of the engine where the camshaft drive chain is located. Please note that the crankshaft rotates...
The location of the top dead center (TDC) for piston No. 1 Renault Megane /
#1 Piston Top Dead Center (TDC) Location These dowel pins are for the ONLY purpose of checking crankshaft position when performing various engine overhaul procedures. DO NOT use them as locking tools to hold the crankshaft stationary while loosening or tightening the pulley or flywheel/drive plate bolts. CHECK 1. TDC is the highest point in the cylinder that the piston reaches when the crankshaft rotates. TO...
SETTING THE PISTON OF THE FIRST CYLINDER TO THE TDC POSITION OF THE COMPRESSION STROKE
In order to ensure that during the work related to the removal of the camshaft drive belt, the installation of the gas distribution phases is not violated, the piston of the 1st cylinder is set to the TDC (top dead center) position of the compression stroke. If the valve timing is disturbed, the engine will not work normally.
Set the TDC according to the mark on the camshaft pulley (when installing according to the marks on the flywheel or crankshaft pulley, the piston of either the 1st or 4th cylinder can be in this position). After that, be sure to check that the marks on the flywheel or on the crankshaft toothed pulley (if the generator drive pulley is removed) match. If the marks on the flywheel or the crankshaft pulley do not match, then the valve timing is incorrect (the piston of the 1st cylinder is not set to TDC).
In this case, it is necessary to remove the camshaft drive belt and turn the crankshaft until the marks are aligned.
WARNING
Turn the crankshaft only by the pulley mounting bolt (it is forbidden to turn the crankshaft by the camshaft pulley).
HELPFUL ADVICE
Since it is inconvenient to turn the crankshaft by the pulley fastening bolt to it, you can do this in the following ways:
1. Engage any gear (preferably IV) and slowly roll the car until the mark on the camshaft pulley matches the mark on the rear cover of the camshaft drive belt.
2. Engage any gear and hang one of the front wheels. Then turn the suspended wheel until the mark on the camshaft pulley matches the mark on the rear cover of the camshaft drive belt.
The TDC marks are on the camshaft sprocket (protrusion) and on the rear cover of the camshaft drive belt (horn).
In addition, marks are made on the flywheel (risk) and on the scale of the clutch housing rear shield (triangular notch). The gearbox has been removed for clarity.
Additionally, marks are made on the crankshaft sprocket (dot) and the oil pump cover (triangular notch).
These marks are only visible when the alternator drive pulley is removed.
You will need: spanner wrench "17", socket wrench "10".
1. Disconnect a wire from the minus plug of the storage battery.
2. Set the gearshift lever to neutral position, place wheel chocks under the vehicle wheels.
3. Remove the right forward wheel and the right mudguard of a motor compartment.
4. Open the hood and remove the three screws securing the front cover of the camshaft drive belt. Please note: the wire holders are also fixed with the screws on the side fastening of the cover. Remove the front cover.
5. Turn the crankshaft by the bolt securing the alternator drive pulley to it until the marks on the camshaft pulley and the rear cover match.
6. Remove the plug from the hole in the clutch housing and check the alignment of the marks on the flywheel.
The gas distribution mechanism is one of the most important components of the car. The average belt replacement interval is 50-60 thousand kilometers. When replacing it, it is necessary to correctly install the timing marks. All the nuances and features of the process are described in this article. And remember: incorrectly set tags will lead to a malfunction of your machine and costly repairs.
For the correct operation of the gas distribution mechanism of the car, it is necessary that the closing and opening of the valves occur in a strictly defined sequence. The slightest inaccuracy in the operation of the camshaft and crankshaft leads to the fact that the gas exchange process in the cylinders is disrupted, and the engine stops working in the correct mode.
The timing belt is a rubber part that can wear out, crack, tear, etc. during operation. Therefore, it is necessary to replace the element in a timely manner.
In the process of installing a new one, you should correctly set the labels. This is necessary in order for the engine to work correctly from the first seconds of starting. If installed incorrectly, serious problems can occur, up to engine failure.
Tools you need to get the job done
Marking is not an easy process, and if done incorrectly, you risk spending a lot of time setting up the part. And this is not the worst. There are times when negligent drivers broke the engine and other mechanisms of the car.
First of all, stock up on the necessary tools:
- End head.
- Jack to raise the car.
- Keys number 17 or 19 - depends on what kind of car you have.
Tip: it's best that you have all the key diameters starting from #10.
Large flat head screwdriver.
Labeling
Before starting work, you need to understand that it is important that during the process of replacing the timing belt, the pre-set risks do not go astray. Otherwise, you will have to delve into the settings and spend more than one hour installing the part.
When installing the timing belt, it is important to set the pistons so that in the first cylinder the piston is at the highest point of the first cylinder. In this position, the piston is at the maximum distance from the crankshaft. It is in this position that the engine is located with the marks correctly set. In this position, it is necessary to change the timing belt.
The number of marks, as well as their location, may differ depending on your engine type.
The following labels can be distinguished:
- flywheel mark.
- Pulley mark.
- Camshaft mark (two on a 16 valve engine).
All of them must match before replacing the timing belt. In order to set the correct position, turn the crankshaft by the bolt securing the pulley to it. Please note: it is forbidden to scroll by the camshaft pulley.
After you set the TDC, replace the belt, tighten the tensioner.
At the end of the belt installation, turn the crankshaft a few turns, check if the risks have gone astray. Repeat the adjustment if necessary.
Timing belt replacement without marks
In some cases, it is necessary to install a belt without labels.
This will require: 
- Calipers.
- Screwdriver
First of all, remove the protective cover of the belt, unscrew the candles.
Let us consider in detail the process of replacing a belt without marks on an 8-valve engine.
- It is necessary to set the camshaft in the overlap, for example, it is convenient to select the second cylinder. To do this, you will need a caliper and a screwdriver. Slowly rotate the camshaft clockwise and observe the position of the overlap. To do this, use the barbell. Put it on compensators and rotate the camshaft to the point where the expansion joints are at the same height. That is, the position of the barbell should be straight, not beveled.
- After determining the overlap, it is necessary to set the TDC (top dead center) of the second cylinder. We insert a screwdriver into the candle channel. Slowly rotate the engine, only in the direction of the engine, so that the piston went up. At some point, you will feel that the flywheel has become easy to rotate. After that, you need to feel the lower and upper points with your hand and set the upper one.
- After adjustments, put on a new belt to match, you may need to turn it a little. Also pull it up.
- The next step is to check the installation of the belt. Rotate the flywheel, look for risk on it. Set it to the top position and check the marks on the camshaft. If the setting is made inaccurately, the risks will leave.
On a 16-valve engine (2 camshafts), installation is carried out according to the same principle.
Consequences of mislabeling
If the timing marks were set incorrectly, there may be serious consequences for the car.
The most common cases:
- Due to the broken timing phases, the valves can be deformed when the engine is running, and damage will accumulate.
- There will be a deformation of the valves - a bend. Although in an 8-valve engine this will not happen.
- Due to deformation of the valves, the cylinder head may be damaged. And as a result, the guide bushings will fail, and cracks may appear on the main power elements.
- The piston mechanism may burn out due to incorrect timing marks.
- An oily residue will appear on the candles. Plus, the incendiary moment of the fuel mixture worsens.
- And there are other side effects as well.
How to understand that the marks are knocked down, symptoms
After replacing the belt, a situation may arise that the markings have not been set correctly. How to determine this is described below.
- Lost traction, throttle response.
- The car starts to accelerate more slowly.
- The engine gets very hot.
At the end of the article, we want to note that not every car owner will be able to set the timing marks correctly. It is necessary to have information about the operation of the engine and its design features. If you do not want to spend a single hour on setting up the mechanisms, we recommend contacting specialists.
