What is a Balance Shaft Belt Tensioner?
The balance shaft belt tensioner, as the name implies, provides tension to the balance shaft belt to ensure total contact between the teeth on the belt and the teeth on the balance shaft and crankshaft timing gears. With the appropriate amount of tension from the belt tensioner, the belt and gears will remain aligned so the balance shaft remains properly timed to the engine.
How do Balance Shaft Belt Tensioners work?
As the balance shaft belt is installed this balance shaft belt tensioner pulley is tightened to manufacturer specifications, and that places the proper amount of tension on the belt. It is bolted through the center into the engine, and the smooth side of the balance shaft belt rests tightly against the pulley as it constantly rotates.
What are the symptoms of a bad Balance Shaft Belt Tensioner?
If the balance shaft belt tensioner fails, there will be a very audible chirping noise from the front of the engine. This is because the tensioner bearing is no longer smooth. If it is not changed immediately, the engine will being running roughly, and vibration will be evident throughout the vehicle. As a worst-case scenario, internal engine damage may occur due to slippage or breakage of the balance shaft belt. The check engine light will illuminate on the dashboard in the event of total failure or breakage of the balance shaft belt.
Can I drive with a bad Balance Shaft Belt Tensioner?
It is not recommended to drive a vehicle suspected of timing component damage, and the balance shaft belt and tensioner are responsible for the timing of the balance shaft to the engine. If the vehicle will run, operating the vehicle may result in damage or total failure to the engine.