k first of its not hydraulic, its spring loaded.
Its just the zetec crap thats got u stuck.
First of all, get the motor in the TDC position.
You will notice the cam ends have a slit in them, have the thinner section facing the sky on the cams. At tdc u want the crank and the intake to be perfect (2nd cam).
Then look at the one u call hydraulic, you just need to put tension on the sproket spring. So remove the belt while the intake is locked and use a T-50 socket to move the exhaust cam 1 tooth up or down until you see the ends of the cams match up.
Intall the belt after u adjust say 1 tooth in either direction and then turn the motor over by hand, after 2 revolutions check the intake and exhast at TDC. IF the exhaust is not matching, say its over or under the line (looking at the ends) then move it 1 tooth at a time up or down by removing the belt and following the procedure all over again.
Make sure u cycle it a few times since the cam is spring loaded it tends to vary about 30degs in either direction.
The engine will start close to a setting but run really rough.
Get some pics of the other side of the sprokets (near the spark coils and ill tell u if u have it in the correct position).
use the following instructions to tension the tensioner since over/under tension can cause problems later.(bottom of page).
http://www.aa1car.com/library/2004/us70444.htmGood luck