If you are tapping in a gray or orange seal the answer is yes. Pack the inside groove of the seal with axle grease to keep the spring in place. Clean the crankshaft surface thoroughly. Work the seal on to the crankshaft by hand--I use a little twisting motion. Have a tool handy for slipping under the seal lip of the seal--work it all the way around to be sure the seal is seated. Tap gently--use a bar across the pipe so the taps act on two spots. If in doubt you can run the thin bladed tool around one more time.
If your seal is the dark brown type from Volvo with the built in lip holder I'd use a seal press--they are easily deformed. -- Dave