V Belt (Fenner Belt) for different automobiles
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Your V Belt (Fenner Belt) worn out? » Read more about common malfunctions • Repair • Replacement manual
Robust and reliable power transfer with the V-belt
As a component, the V-belt was found in cars practically from the beginning. The V-shaped belts connect a high pressure force with a small cross section, making them ideal for installation in narrow engine compartments. For a long time, the V-belt was the standard belt drive in a car. Meanwhile, the timing belt and flat belt have become serious competitors. For some modules the V-belt remains the standard used component.
Belt drives in a car
The car engine has many modules driven by a rotation, making them suitable for connection to a V-belt drive. Typical applications for the V-belt are:
- water pump
- servo pump
- coolant compressor
- possibly hydraulic pump for the brake booster
V-belts are unsuitable for valve control. A V-belt drive allows mutual shifting of driving and driven discs. With a timing belt this would destroy the engine immediately.
A V-belt shows its failure loud and clear: it starts to squeak. This happens when its rubber layer gradually hardens. Friction forces grind-polish it. The power transmission deteriorates. You could try maintaining the belt drive for a while by tensioning it. Sooner or later the squeak becomes so loud, that the belt has to be replaced. If you ignore this, even a thick V-belt will rupture at a certain point. If suddenly the coolant boils, the battery check light switches on during driving or the steerage becomes heavy, a ruptured V-belt can be the cause. A defective V-belt is easy to identify: if its surfaces are smooth and shiny, the fabric strip is fraying or the rubber is brittle, it is high time for replacement.
Replacing a V-belt
As a rule, replacing a V-belt is easy. The belt drive is loosened, slackened, the old belt removed, the new one put on. Subsequently the system is tensioned, done. In most V-belt drives the driven module is responsible for the system's tension. If this construction is not an option, an additional tension pulley is installed.
Many V-belts do not have a continuing V-shaped cross section. Instead they have a strongly toothed profile. This toothing serves the purpose of making the V-belt more flexible, allowing it to be installed in small radiuses. The teeth have no driving function as is the case with a timing belt. Timing belt and V-belt should therefore never be confused. The V-ribbed belt or poly-V-belt is also readily confused with the V-belt. Nevertheless it is a totally different component. The poly-V-belt is a flat belt, reinforced by longitudinal ribs. This is practically the reversed principle of the toothed V-belt. The V-ribbed belt is also exclusively used for the drive of uncontrolled modules.
V-belts in the online shop
In our online shop we offer a wide choice of V-belts. Although we supply these articles at a very cheap price, we always guarantee the best quality and durability. A fresh V-belt makes driving considerably safer. Do not put yourself at risk, and simply replace your V-belts at the first squeak.