Camshaft drive scheme on VAZ 2110, VAZ 2111, VAZ 2112 cars: 1 - toothed pulley of the engine crankshaft; 2 - tide on the cover of the oil pump; 3 - toothed pulley of the coolant pump; 4 - tension roller; 5 - toothed pulley of the exhaust camshaft; 6 - back cover of the belt; 7 - toothed pulley of the intake camshaft; 8 - guide roller; 9 - toothed belt; A - TDC mark on the crankshaft toothed pulley; B - mark on the cover of the oil pump; C, F - label on the back cover; D - mark on the gear pulley of the exhaust camshaft; E - mark on the gear pulley of the intake camshaft
Removing
1. We prepare the car for work (see "Preparing the car for maintenance and repair").
2. Remove the crankshaft pulley (see "Crankshaft pulley - removal, installation, replacement").
3. Remove the front cover (see "Front timing belt cover - removal and installation") and mark the direction of rotation of the belt.
4. Install the crankshaft pulley bolt in place.
5. Turning the crankshaft with a socket wrench by 17 mm for the pulley mounting bolt, set the piston of the first cylinder to the TDC position of the compression stroke. In this case, the marks of the crankshaft pulleys and camshafts will be aligned with the alignment marks on the oil pump housing and the rear cover of the gas distribution mechanism.
Note. To remove the timing belt, it is enough to unscrew the tension roller nut a few turns and loosen the belt tension. However, it is more convenient to remove and put on the timing belt on the pulleys when the tension and guide rollers move freely on the studs.
6. Using a 17 mm wrench, unscrew the nuts securing the tension and guide rollers.
7. Remove the timing belt.
Recommendation. Check the condition of the tension and guide rollers (see "Timing belt tensioner and guide rollers - removal and installation").
Installation
1. We put the timing belt on the crankshaft toothed pulley (according to the direction of rotation mark, if the belt is not new), making sure that the mark on the crankshaft pulley is aligned with the mark on the oil pump housing.
2. We pass the left branch of the timing belt from the outside of the coolant pump pulley and the inside of the tension roller. We skip the right branch of the timing belt from the inside of the guide roller.
Note. If there is a device for fixing the camshaft pulleys, we install it and put the timing belt on the pulleys, preventing its right branch and the area between the camshaft pulleys from sagging. If there is no device, it should be borne in mind that after removing the timing belt, the intake camshaft pulley will turn one tooth clockwise under the action of their springs, and the exhaust camshaft pulley will turn counterclockwise.
3. With a 17 mm wrench, turn the intake camshaft pulley counterclockwise until the marks on the pulley and cover are aligned. Having chosen the sagging of the right branch of the timing belt, we put the timing belt on the exhaust camshaft pulley.
Without giving the timing belt the opportunity to jump over the teeth of the pulley, let the pulley return to its original position (turn one tooth to the right).
4. With a 17 mm wrench, turn the exhaust valve pulley, setting it to a position similar to the position of the intake valve pulley (the pulley mark is one tooth away from the mark on the cover).
Holding the pulley in this position, we put the timing belt on its upper part, preventing the timing belt from sagging between the pulleys and jumping over the teeth of the intake valve pulley.
5. Turning the pulleys with a 17 mm key, we tighten the right branch of the timing belt, preventing the crankshaft pulley from turning and completely put the timing belt on the exhaust camshaft pulley.
6. We check the alignment of the marks of all three pulleys in the TDC position of the compression stroke of the first cylinder (see fig. Camshaft drive scheme).
7. We pull the timing belt (see "Timing belt - checking the condition and adjusting the belt tension") and tighten the roller nuts.
8. With a 17 mm key for the pulley mounting bolt, turn the engine crankshaft two full turns, after which we again check the alignment of the marks of the crankshaft pulleys and camshafts with the alignment marks on the engine. If necessary, repeat the installation of the timing belt.
Further assembly of the engine is carried out in the reverse order of disassembly.
see also "Timing belt tensioner and guide rollers - removal and installation".