Adjustment of valves "Renault Logan" (1.6, 8 valves) with their own hands. The order of valve adjustment on the "Renault Logan"

Owners of cars "Renault Logan" after the warranty period expires, they face the necessity of self-service of their cars. One of the necessary procedures is the adjustment of the valves. "Renault Logan" is arranged quite simply. So, you can do this procedure yourself and not spend money on STO. The valve clearance adjustment scheme is simple enough and is available even for those who have never had experience in this matter.

These cars are on the market in modifications with engines of 1.4 and 1.6 liters. There are two versions of 1.6-liter engines. The 8-valve model and the 16-valve model are offered. On the sixteen valve unit manual adjustment of the gaps is not provided. For this, the construction has hydraulic compensators. But on the eight-valve adjustment of gaps is carried out manually. Let's see how this is done.

Purpose and functions

Inlet and exhaust valves are one of the most important parts of ICE. Due to these, combustible fuel enters the combustion chambers and burned products leave the exhaust system. For most of the operating cycle, the valve is closed. Opening takes place for a fairly short time. These elements are now being given certain requirements. The valves must not interfere with the exit of the combustion products. When they are open, they carry out their tasks with a minimum frictional force, clearly perform their function, work at a certain moment. Also, the valve must have a strictly defined clearance. This prevents the gases from escaping out of the chamber at the moment of ignition of the mixture.

Why regulate?

First let's find out why the valves need to be adjusted. "Renault Logan" has its own compensating valve clearance. This is the specified distance between the adjustment bolt and the drive shaft. Specialists "Reno" provide for certain gaps. They also allow to compensate for the expansion of metal parts during their heating.

With untimely adjustment and incorrect gaps, there is a risk of accelerated wear of engine parts and components. When the parameters are too high, the power and other characteristics of the power unit are reduced. The combustion chamber can not be fully filled with the fuel mixture to the desired extent. A small gap leads to losses in the combustion efficiency of the combustible mixture. In this case, there will be low compression. Also, there is a risk of burning the valve seats and forming carbon deposits.

If you operate a car with unresolved gaps, this will lead to serious malfunctions in the gas distribution system. As a consequence, expensive repairs.

Periodicity of the operation

How often should the valve clearance be adjusted? "Renault Logan" according to the regulations and recommendations from the manufacturer is to be adjusted every 80-100 thousand km. However, in reality, these figures are much lower. In order to be confident in this city car, you have to squeeze out all the power and torque that this unit is capable of. This operation does not pass without a trace for the motor. Thus, the details of the piston group wear out intensively.

In the Russian reality, this operation should be carried out at least every 60,000 km. The engine will tell the owner about the need for adjustment. When the engine is running, distinctive knocking at idle will be clearly heard.

Norms of clearances for engines "Renault Logan"

The French automaker recommends setting a clearance of 0.1 to 0.15 mm for each intake valve. For graduation rates are from 0.25 to 0.3 mm. If all valves have been replaced, then the lap gaps must be set. They should be from 0.20 mm to 0.25 mm.

Required Tools

To perform this operation, we need a standard set of tools. Need pliers, a set of measuring probes, car keys - 13 and 10, as well as a screwdriver.

How to adjust valves: preparation for surgery

So, the adjustment of valves ("Renault Logan" in 2004, including) is always carried out only on a cold motor. Before performing the operation, it is recommended to tighten the timing belt if it is loose.

Procedure for performing the operation

The adjustment of the valves "Renault Logan" with their own hands begins with the removal of the cylinder head cover. You need to have a set of tools. The first thing to do is unscrew the bolts that hold the air filter. There are four in total. Next, the L-shaped branch pipe going from the filter to the valve cover is dismantled . Then remove the air filter housing. The next step is to disconnect the spark plug wires and also to remove the valve cover. The latter keeps on eight bolts.

After this, raise the front of the car from the driver's side and turn on the fourth gear on the gearbox. The raised wheel is twisted until the letter F appears on the camshaft gear. It is necessary to observe the valve of the first cylinder. The letter will appear almost immediately when the valve starts moving. In this case, for one complete revolution of the car wheel, the camshaft also makes one turn.

Then the gaps for the first cylinder are measured. Loosen the lock nut, and the bolt is clamped with pliers. Special gauges are used to measure gaps. After setting the required distance, the valve adjustment bolts are twisted on the Renault Logan. Further it is recommended to check the parameter again with a feeler gauge. The latter in the gap must move only when a certain effort is applied to it. The same operation is performed for the third cylinder. If you rotate the crankshaft by half a turn, then you can adjust the gaps on the fourth cylinder. Then on the second. Next, the shaft has to be turned for a full turn and check again for each gap. If everything is in order, the engine can be assembled.

Do not violate this order of valve adjustment on the Renault Logan. When servicing the car, always act according to the manufacturer's instructions.

"Renault Logan" and HBO

As for cars whose engines run on gas, here the opinions of car owners and manufacturers of gas-cylinder equipment diverge. Manufacturers of modern equipment of the Euro-4 class claim that with these installations the Renault Logan car does not need to adjust the valves for gas, since the injectors are accurate and modern. The entire operation of the system is electronically controlled. Car owners claim that it is necessary to regulate clearances, and this operation should be done more often. So, many perform tuning every 20-30 thousand kilometers. As for the gaps, for intake is considered the norm of 0.15 mm. For graduations - 0,30 mm. Recall that these parameters are suitable for propane-butane.

Helpful Tips

To easily and simply put the piston of the first cylinder in the TDC, firstly the camshaft is exposed to the eye. Then it is rotated in such a way that the two heels of the rocker arms, on which the adjustment of the valves are performed, could rest against the occipital part on the shaft cams.

The adjustment process can be greatly simplified. After the cover is removed, from the flywheel side at the end of the camshaft you will find a mark in the square part. The stain made by the enamel will look up if the piston in the first cylinder is set at the top dead center. To move the shaft, car owners are advised to include not the fourth, but the fifth gear. After the adjustment of the valves for the first cylinder is completed, proceed to the exhaust valve of the fourth cylinder. The suspended wheel is rotated further and adjusts the gap. How are the valves adjusted? "Renault Logan" is configured in the second cylinder. The procedure is similar to the operations on the first. By what scheme is the valve adjusted? "Renault Logan" is configured by the following algorithm - 1-4-2-3. Each digit is the serial number of the cylinder.

Conclusion

This is how the valves are adjusted. "Renault Logan" (1.6, 8 valves) can be serviced by yourself. In fact, this operation is really simple, and it can be performed by a motorist of any level - both beginner and experienced. Also, self-regulation is a good way to save money. After all, on SRT for this service a considerable amount is taken.