Adjusting the tension of the camshaft drive belt (VAZ-2108)

To tension the belt, remove the front toothed belt cover and turn the crankshaft by the generator drive pulley mounting bolt clockwise two turns. The crankshaft should only be turned in the direction of tightening the bolt (clockwise). When tensioning the belt, do not turn the crankshaft by rotating the camshaft pulley or its mounting bolt.

The belt tension is checked. It is considered normal if in the middle part of the branch between the pulleys of the camshaft and crankshaft the belt is twisted lengthwise by 90° with the force of the fingers (1.5-2 kgf). If the force is below the norm, the tension roller mounting nut is loosened, its axle is turned by the hex head by 10-15° counterclockwise and the axle mounting nut is tightened.

Turn the crankshaft clockwise two times again and check the belt tension. If the tension is insufficient, repeat the operation. If the tension is normal, tighten the tension roller axle mounting nut to 4 kgf·m and install the front toothed belt protective cover.

When adjusting, do not allow the belt to be over-tensioned, as this will significantly reduce its service life.

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