Removal and installation of a gear belt

Removing the toothed belt tensioner using wrench 21.012

Installing signs of the gas distribution system

Timing Belt Tension Check Sequence

Withdrawal

1. Remove the negative terminal from the battery.

2. Remove the radiator and disconnect the hose from the thermostat housing.


3. Place the transmission in neutral and apply the parking brake to the vehicle.

4. Remove the V-belt by loosening the bolts securing the alternator and sliding it towards the engine.

5. Set the piston of cylinder 1 to top dead center by turning the crankshaft by the bolt securing the V-belt pulley in the direction of working rotation until the top dead center mark aligns with the mark on the crankshaft front sealing ring housing, and the mark on the camshaft pulley will not line up with the mark on the cylinder head. Mark the position of the distributor rotor in relation to the distributor housing, for which remove the distributor cover by lifting the 2 side mounting brackets with a screwdriver and unscrewing the 2 screws securing the cover.



6. Unscrew the bolts securing the toothed belt cover, tilt it to the side and forward and remove it.

7. Release tension on toothed belt by first unscrewing hexagon bolt (key s=6) on the belt tensioner and then the hex bolt (s=16) and overcoming the resistance of the spring, tilt the tension block and completely unscrew the bolts.

8. Remove the auxiliary belt pulley bolt and remove the belt pulley from the crankshaft. If the toothed belt is removed only from the camshaft pulley, then the pulley should not be removed from the crankshaft. To avoid turning the crankshaft when unscrewing the pulley, it is necessary to fix the flywheel by the teeth of the ring gear or engage fifth gear and the assistant press the foot brake all the way.


9. Remove the auxiliary drive belt pulley.

10. Remove the guide washer in front of the toothed belt drive pulley.

11. Remove the toothed belt, after noting the direction of its rotation.

Attention! Do not turn the engine by the camshaft pulley, as this can destroy the belt. If there are cracks, traces of oil or damage to the teeth on the belt, the belt must be replaced.

Installation

1. Check the alignment of marks on the camshaft pulley and cylinder head. Align labels if necessary.

2. Install the intermediate shaft so that the mark on the distributor rotor is above the mark on the edge of the distributor. First you need to remove the distributor cover by lifting the 2 side mounting brackets with a screwdriver and unscrewing the 2 screws securing the cover.

3. Install the toothed belt onto the crankshaft pulley and tighten the V-belt auxiliary pulley onto the crankshaft.

4. Install the toothed belt onto the camshaft pulley and loosen the belt tensioner.

5. Rotate the crankshaft two turns at the V-belt pulley so that the tensioner rests on the toothed belt and tighten the tensioner: first with the hexagon bolt and then with the hexagon socket.

6. Turn the crankshaft another 2 turns and check the alignment of the marks on the camshaft pulley, ignition distributor rotor and crankshaft V-belt pulley.

7. Rotate the crankshaft another 2 turns clockwise and then 60°counterclockwise and check the belt tension using a belt tension gauge 21-113, which must be installed on the longest belt run. Normal belt tension is 4-5 units for a used belt and 10-11 units for a new belt (see fig. Timing Belt Tension Check Sequence).




8. In the absence of a belt tension meter, you can determine the tension by turning the belt with your thumb and forefinger. The optimum tension is when the belt rotates 90°when moderate force is applied.

9. Install the toothed belt guard.

10. Install the distributor cap.