My experience of the alternator belt replacement and adjustment VAZ 2401-07

  • Dec 26, 2019
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A frequent cause stopover a belt gap generator (WG). The generator provides the engine, headlights, devices. Only energy battery will not last long.

Principle of operation

RG connects the crankshaft, cooling pump, generator. He performs the following tasks:

  • The torque is transmitted from the crankshaft to the car's auxiliary mechanisms.
  • Matching engine operation in different operating modes.

The belt is made of rubber, it has teeth to better grip, inside of the cord filaments that increases its reliability, strength, elasticity.

WG is under the hood, the right of the battery is regulated by a nut fastening of the generator. It connects three of the pulley (Fig. 1).

Fig. 1.
Fig. 1.

Reasons for replacement

Belt is exposed to heavy loads during operation:

  • Overheat.
  • Tooth wear due to friction.
  • Stretching.

When WP is in urgent need replacement:

  • Tooth wear.
  • Small gaps, cracks, delamination.
  • End of life after 50 thousand km run.

Removing RG

Turn off the half nut adjustment RG (located on the engine) key 19 mm (Fig. 2), the mount (can be used flat or claw small crowbar) to move the generator to stop the engine cylinders.

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Fig. 2.
Fig. 2.

Remove the first strap from the upper pulley, and then from the remaining two. When removing the complexities WG, gently pry the screwdriver and output it to the upper edge of the pulley, then manually scroll through the crankshaft, it easily comes off (Fig. 3).

Fig. 3
Fig. 3

Carefully inspect the belt often breaks, cracks, delamination, abrasions of teeth can only be seen by visual inspection. When buying a new belt specify a particular model of VAZ, as their length varies. And the best shot to bring the product to the seller took you a replacement.

Belt an important part of the car, some owners give Bosch product preferences. At a cost of it will be like two products of Russian producers. What to choose every motorist decides for himself.

the installation of a new belt in the reverse order. After installation, you need to spend RG its tension. For this crowbar or other metal product stretch the belt pressing on the motor generator, fix the nut.

Adjusting the tension

It is important to pull the RG, or installing a new item, we will hear a whistle, when you try to start the engine. It would show his weak tension, pull also can not, because it will lead to an increased load on the bearings, overheating their failure.

To adjust the line will need to measure the sagging of the belt by pressing it 10 kgf midway between the crankshaft pulley and the generator, or the refrigeration system and the generator. In the first embodiment, the deflection should be from 12 to 17 mm, in the second embodiment ─ from 10 to 15 mm.

Spatula or other suitable object squeeze the middle belt, measure, sagging belt at load, where necessary or stretch the belt to release the desired value, then adjusting the tightening screws generator.

If you start the car and hear the whistle, which then passes, it is necessary to increase the tension. Thus on the belt must be moisture, oil, it can also be a cause whistling.

Nodule on the memory

In cold weather (temperatures below +8), if the car was in the parking lot from 8 to 24 hours of rubber belt "dubeet", you can hear a short whistle, when you start the car. But he is 3-5 seconds passes.