Quote:
Originally Posted by aptwave
I think that VANOS caps playing role of dusters and "paper" for part number - nothing more.
There's central screw which is holding spring in it's place and because of rectangle profile this spring will not bend easily in the direction to come off and there's no such force applied to it. So if it want to come off - it will, and cap will not save it or hold in place.
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I’m sorry but this assumption is simply incorrect. The central bolt does not hold the spring in place. It may cover one end of the spring but it does not retain it. It holds the center of the vanos hub (rotors) against the cam. The spring tensions the outer ring (rotor housing) of the vanos hub to prevent rattles under operation. There are pins on the other end of the spring that the spring nests in and tensions against but the cap keeps the spring coil from walking off the front of the vanos unit.