Using a hammer and metal drift gently tap the bearing into place. This video covers removing and replacing the pilot bearing.

Gm Ls Pilot Bearing Tech Info American Powertrain
How to install pilot bearing in flywheel. I am an amazon affiliate and may receive a commission for sharing. Expand the tool until locked in the pilot bearing. Install the slide hammer on the puller and pull the hammer away from the motor until the bearing is removed mine only took 5 hits. An old automotive trick is to put the bearing in the freezer for about 30 minutes to shrink it slightly to help ease the installation process. Install the new pilot bearing. Slots were at 6 and 12 oclock on my stock motor.
We use a 13l suzuki samurai engine as our example but it will work just as well on other. With a minor modification to a common steering wheel puller you can push in a clutch pilot bearing or bushing wo beating it and your engines thrust bearing. Then gently set the bearing into the end of the crankshaft. Here is the haynes manual if you want it for your project disclaimer. Use the rented puller tool and insert into the pilot bearing. This video shows how to remove a pilot bearing from a flywheel using bread instead of an expensive puller.