If the medium diameter bearing is a loose fi t please use the large outside diameter bearing for a slight press fi t into the crankshaft. 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.
Crank Roll Pin Removal Pilot Bearing Install Rennlist
How to install a pilot bearing. The pilot bearing should be a slight press fi t into the crankshaft. Then gently set the bearing into the end of the crankshaft. Use 13mm to unbolt shifter from the transmission. Install the new pilot bearing. Installing the pilot shaft bushing into the replacement 390ci engine. Here is the haynes manual if you want it for your project disclaimer.
Be sure to install your pilot bearing into the crankshaft by driving or pressing on the outer most part of the bearing only. Use an 8mm or 10mm socket to remove outer boot depending on bolts used previously. Installing the flywheel pilot bushing clutch and pressure plate on a 350 chevy small block for a 1966 impala. Wiggle shifter until it separates from the transmission. I am an amazon affiliate and may receive a commission for sharing. Pop off shifter bezel and unplug cigarette lighter plug.
This video covers removing and replacing the pilot bearing. 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.