Here is a picture of my engine. The aux. sprocket has a timing point on it (look for the red "X"), does that align with anything for proper timing? I have a '95 Ford service manual and it shows on a '95 Ranger 2.3 there is a timing mark on the cover that aligns with the diamond shaped mark on the aux. sprocket. I just want to be sure that my '89 does or does not get aligned with any other mark? I disturbed the sprocket when I accidentally rotated it with the belt off.
As near as I can determine from reading about camshaft timing and belt installation in my '91 Ranger Truck Shop Manual, the key step reads: "Position the crankshaft sprocket to align with the TDC mark and the camshaft sprocket to align with the camshaft timing pointer." I do not find any reference to aligning the auxiliary sprocket with anything, even though your picture shows a mark on that sprocket. It looks like Ford used the same sprocket on the camshaft and auxiliary shaft.
I just replaced my belt also and had the same problem. My Hanes manual shows that Aux. Gear lines up with the camshaft gear when the camshaft gear is set. So it points toward the Camshaft timing mark, and it is the gear for the Oil Pump. Hope that helps.