The piston of the 1st cylinder is set to the TDC (top dead center) position of the compression stroke so that when carrying out work related to the removal of the camshaft drive belt, the valve timing is not disturbed
Usually, the timing belt is designed to operate for 30,000 km
It is necessary to inspect the belt at each maintenance and check its tension
Hydraulic pushers of the VAZ-21126 engine, made in the form of cylindrical pushers located between the camshaft and valves, combine two functions:
To grind valves, it is most convenient to use a special mechanical device (reversible drill)
Camshafts are replaced in the following cases: – pressure drop in the engine lubrication system
The VAZ-21126 engine is installed on different types of cars.
Let's consider the removal of the cylinder head on the example of the Lada Priora car.
Drain the oil from the engine. We wash the engine and install it on a disassembly stand or stand
Disassembly of the engine is presented in the article - "Disassembly of the VAZ-21126 engine"
After disassembly, thoroughly clean, rinse and dry all parts
Disassembly of the engine is presented in the article - "Disassembly of the VAZ-21126 engine"
Defection of engine parts is presented in the article - "Defection of engine parts VAZ-21126"
In the VAZ-21126 engine, the joint between the cover and the cylinder head is sealed with a sealant applied to the mating surfaces of the parts.
An external sign of wear on the valve stem seals is the short-term appearance of blue smoke from the exhaust pipe after starting the engine and when braking the engine after a long drive under load
If you find traces of oil leakage through the camshaft seals, first check to see if the crankcase ventilation system is clogged and if its hoses are pinched, and correct the problem if necessary
To improve the appearance of the engine compartment and reduce noise levels, a decorative plastic casing is installed on the engine
Engine - gasoline, four-stroke four-cylinder in-line with an overhead camshaft and liquid cooling
Timing drive with idler
Remove the front timing belt cover
To compensate for the thermal expansion of the valve stem, a gap is required between the camshaft cam and the valve lifter
Removing the camshaft
Remove the cylinder head cover
The fuel rail is removed to replace injectors and repair the cylinder head, as well as when replacing the rail itself
Checking the thermostat
After starting a cold engine, the main thermostat valve is closed, and the upper part of the thermostat housing in good condition remains colder than other parts of it for some time
Pressure reduction in the supply system
Remove the No. 9 fuse (fuel pump fuse) from the right fuse box.