Quote:
Originally Posted by colushi808
Yes but the rotation is in and out. Here is a pic of it not installed and straight. You can see the base where the rod comes out is straight. In the earlier pics, one is under vacuum and the other not and it's both crooked. 
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The rotation of the valve causes an in-out motion of the rod but there is a non-zero length lever arm making the attachment. As the valve rotates the end of the arm must move vertically. Your orientation looks normal to me.
I suppose you could enforce longitudinal motion by cutting the arm, adding a second mount with a hole in it for the rod to slide through and then a hinge like a single chain link to the middle.
I have a theory that by sourcing the vacuum where they did, a spot the sees both vacuum and boost, they are causing extra wear to the diaphragm. My first actuator lasted two months. After switching to a vacuum-only source the replacement has been in use for over a year. Only a single data point, but it seems to be ok so far.