850 T-5 L5-2.3L Turbo VIN 58 B5234T5 (1997)
Timing Belt Tensioner: Description and Operation
Automatic Timing Belt Tensioner:
Basically the tensioner consists of a spring and a damper.
When the belt is too slack, a piston is pressed out by a spring and oil flows, via a non-return valve, to the other side of the piston until oil pressure
is equal on both sides of it.
If the belt becomes too tight oil is pressed back past the piston through a leak-off channel until pressure is once again equal on both sides of the
piston. This keeps the belt evenly and correctly tensioned regardless of its temperature.
