without the tool ,
set balancer to mark at 25 ATDC
remove sensor cap
drop sensor body in with dot on gear toward the passenger fender (perpendicular to centerline of crank
and when its in correct the reluctor window will be at the 3-4 oclock position , if its not remove ,spin the oil shaft a little bit and try again
, if it was dropped in correctly and you are on the compression stroke 25ATDC the relucto window will be it at 3-4 oclock position . the lead edge is the lower edge of the window opening toward the 4 oclock
find the the cap notch on the sensor that indexes the cap and spin base so notch is around the 11oclock position
when you can draw a straight line from the lower edge of reluctor window through the center screw to the notch thats it , tighten bolt down on timing cover , put cap back on
if this is in the car with sensor plugged
set the balancer at 25atdc on balancer and
turn igniton key to on (remove ignition wires)
use a volt meter with probe slid into back of the signal wire look for the voltage drop as you spin the sensor counter clockwise , thats the edge ,tighten it down
heres procedure with tool and volt meter and youll see pics of the window and notch
http://vortexbuicks-etc.com/cam_sensor.htm