Checking the condition of the V-belt (VW Golf 1)

Since powerful generators are installed nowadays, V-belts transmit significant forces. Therefore, the tension is set higher than before.

Too little tension causes more belt slippage along with insufficient force transmission to the alternator and water pump. As a result, the belt temperature increases and its edges wear prematurely.

If the belt tension is too low, during sharp acceleration the crankshaft belt pulley spins under the belt, and uneven wear appears on the side surfaces of the belt.

Excessive belt tension damages the bearings (supports) of the generator and water pump.

To check the belt, turn the engine several times.

This is the only way to really check all the surfaces of the V-belt. Often it has only one single, but deep crack, which can be detected during the inspection.

If the belt has cracks or is frayed, it must be changed immediately.