The timing belt should be replaced at least once every 60 thousand kilometers. Long driving without replacement is fraught with belt breakage and cylinder head repair.
The timing belt needs to be replaced every 40-60 thousand kilometers. This is the most optimal service life, it is already unsafe to operate longer. If the belt is excessively worn, a break may occur, which will result in the valves being bent. When the camshafts lose contact with the crankshaft, the valves are lowered, they all turn out to be open.
The pistons, on the other hand, continue to move by inertia, as a result of which they forcefully strike the valves. This is despite the fact that the metal from which the valves are made has a very high strength. You can get rid of such consequences by making recesses on the surface of the pistons. They should be clearly under the valves so that when the timing belt breaks, the pistons do not hit the valves. A break can also end with the appearance of microcracks on the cylinder head. As a result, engine performance will be unstable.
What is needed to replace the timing belt
First, you need the timing belt itself. Watch carefully to make sure there is no damage to the new belt. A small cut on its surface is a sure sign that it will not have a long service life. Together with the belt, it is imperative to replace the tension and idler rollers. Do not confuse them in places, the first is placed on the side of the passenger compartment, and the second on the side of the radiator of the cooling system. It is also necessary to replace the camshaft plugs. Ideally, the cooling system pump is replaced.
Otherwise, leaks and backlashes may appear, again you will have to be disassembled and repaired. It is better if you carry out all the work at one time, do not postpone for the future. You need a small set of tools. Keys and screwdrivers - this goes without saying, in addition to them, special shaft clamps (camshaft and crankshaft) are needed. If such a tool is not available, you can make it yourself. A person who understands the principle of operation of such a retainer will be able to do this.
How to replace the timing belt
Jack up the right side of the vehicle and remove the wheel. Remove the bolts that secure the engine protection. Then remove the cover that covers the timing belt and shafts. Also remove the power steering belt. In case the car has power steering. Now only the generator belt will interfere with you, so we loosen it and remove it. That's it, now you can start removing the old belt.
Lock the crankshaft by disconnecting the speed sensor and installing a wide screwdriver in the free window on the clutch block. It must fit clearly between the teeth of the rim. Before fixing the crankshaft, you need to set the first piston at top dead center. The camshafts must be aligned with the marks and fixed. Replace the pump and install new rollers. Now put on the belt and tighten it.
