Timing belts are maintenance-free, i.e. they do not require retensioning. They endure high levels of stress as a result of the high temperatures in the engine compartment and the constant flexing and are subject to aging and constant wear.
PREVENTING SERIOUS ENGINE DAMAGES
Timing belt condition should be inspected as a precautionary measure during servicing in accordance with the vehicle manufacturer’s specifications. Irregularities are then identified in good time. If the timing belt snaps while the engine is running, the engine valves and pistons can suffer high-impact collisions. In many cases this causes serious engine damage. To avoid that, a belt should be changed under the following circumstances:
- The maximum lifetime has been reached
- The belt is damaged/worn
For the timing belt to operate safely and reliably, various components are required to guide it and ensure the correct tension. All the belt drive components are subjected to extreme stresses in modern engines, such as vibrations or large fluctuations in speed and temperature. They affect the entire timing system and call for exacting quality standards.