Basic mechanics: how do you actually manipulate upper control arm alignment cams?
Some info ..
The bolt side of the bolt / washer / nut has a flat that the eccentric washer fits into.
The nut just tightens the assy in place.
As mentioned... Loosen the nut, then when you turn the bolt the washers turn as well. Turn the bolt / washer one way moves one end of the upper arm in, one one way moves it out. The combination of both the front and rear move the entire arm for caster and camber.
Example,
Turn the rear one all the way in and the front one all the way out, moves the upper ball joint back towards the rear of the car. It also effects the camber moving the upper ball joint in or out.
The washers are contained between these flanges.
Some info ..
The bolt side of the bolt / washer / nut has a flat that the eccentric washer fits into.
The nut just tightens the assy in place.
As mentioned... Loosen the nut, then when you turn the bolt the washers turn as well. Turn the bolt / washer one way moves one end of the upper arm in, one one way moves it out. The combination of both the front and rear move the entire arm for caster and camber.
Example,
Turn the rear one all the way in and the front one all the way out, moves the upper ball joint back towards the rear of the car. It also effects the camber moving the upper ball joint in or out.
The washers are contained between these flanges.