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Replace a Spare part V-belt – a defective one or if the limit of use has been already reached. Find out useful information about V-belt

Poly V-belt is characterized by a low profile, as well as the presence of several longitudinal wedges or streams. In addition, the belt of this type provides high strength with improved power transmission. In some cases, poly-V belts are used to replace flat and V-belts, which operate in the kit. Belts of this type are rarely replaced because they have an increased flexibility and resistance to cracking, as well as reduced heat build-up.

To understand that it is necessary to change the belt, you need to draw attention to some points. If you hear a whistle, which appears when you load the car electrics and the indicator reports the problems of the generator, then the problem is exactly with the Poly-V belt. In this case, the belt is worn out or slightly stretched. Before examining the belt, remove the key from the ignition and disconnect the appropriate cable from the battery. This will let you to inspect the belt for wear, to see if there are, for example, cracks, fractures, loss of elasticity and elongation.

If the belt is worn out, you need to replace it. Even an unprofessional will be able to replace the belt. To do this, remove the old belt tension and loosen the tensioner bolt nut with the key. The tensioner is represented either as a bolt or as a rack in the shape of a semicircle - it depends on the model and make of car. The new belt should be installed in the same way as the old one. After that, compare the old and new belts to see they are of the same size. To install, first tighten the belt, which requires the use of bolt tension, but remember that the belt should not be very tight.

After installation, test the new belt. If you hear the whistle, the belt tension should be strengthened. It is not a problem to buy a new belt, just like to order any other goods in the Internet. Go to our online store, choose from a large number of car parts, including dryer, oil level indicator or lining - the one you need, select the model and make of your car and order a new part. It is very simple!


Faults of V-belt
  • breakage of the belt;
  • excessive wear of the side faces;
  • cracks, spalling and mini-fractures at the belt bottom;
  • loss of the material rigidity;
  • uneven stretching and wear;
  • twisting of the belt.
Symptoms of V-belt faults
  • whistle while the engine works;
  • overheating of the engine at idling;
  • worn-out structural condition of the belt;
  • dips in the combustion stroke of the cold engine.
Causes of V-belt faults
  • block or stifled movement of the drive;
  • insufficient or excessive belt tension;
  • ingress of foreign objects in the system;
  • wear of pulley grooves;
  • discrepancy or wear of the outer roller;
  • impact of oils or chemicals on the belt;
  • improper V-belt installation and fastening;
  • inadequacy between the belt and drive power;
  • use of substandard parts or materials;
  • long-term impact of low or high temperatures on the system;
  • excessive starting torque;
  • untimely replacement of the system elements;
  • failure to comply with the rules of the system operation.

You can check the condition of the V-belt by yourself. To do this, remove the cover and loosen the fastening of the pump. After that, check the apparent condition of the belt, its placement and tension. Push down the belt with a finger. The maximum deflection should not exceed 5 mm. Working surface should have no visible damage, fuel or lubricants. If you have oily spots on the belt it is necessary to make an immediate replacement and check seals. Also check the tension bolt of the generator, swivel bearing and tension rollers mounts. It is advisable to check the tension and condition of the belt after every 1000 kilometers.

Replacing the V-belt

Repair and restoration of the V-belt is not made because of the relatively low cost of a new part. Installation does not require specific skills and equipment and can be performed independently. First you need to remove the cover and loosen the adjusting bolt and fastening of the cooling system water pump. Next, remove the belt and replace it with a new one, be careful not to damage the tension rollers. After installing the belt on the pulleys, tighten the adjusting bolt and set the correct belt tension.

V-belt replacement - instructions, descriptions and repair

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