I don't know about the tercel, but if it's like a Celica, then the axles are held in to the tranny with a spring clip in a groove on the end of the splined axle. A good pop with a pry bar and they come right out. Again, that's on a Celi, so I don't know if the tercel is the same. What year, btw? Have you tried asking on the Tercel forum here?