'98 explorer sport
HP D30 w/grand cherokee knuckle
leaf springs

I have not been able to find much info on how to determine how to set my axle to find my 0* caster in order to set the proper caster for my SAS. I know 0* should be where the upper and lower ball joints are vertically aligned. Is there an easier way to know where 0* is?

 

Put an angle finder on the top flat part of the knuckle, should read zero. Adjust from there.

After looking at it what I posted may not have made full sense.....you put the angle finder on top of the knuckle to get the angle. It may not read zero, but move the axle forward and backward to get the caster angle you want.

 

Alright. I will get that done after I weld my WJ spacers on the knuckles. Thanks