HOW FITTING
On some crankshafts, the pilot bushing bore is undersize or irregular. Driving in a bushing with too much interference would lead to the I.D. of the pilot bushing being too small for the transmission input shaft. Simply mic the bore and adjust the bearing you are replacing it with by turning the OD. If there are steps in the crank bore, make that adjustment as well. .003” press fit is good.I prefer to use a spud in the mill collet, turning against a fixed bit. I do this for valve guides and many operations just using a collet and the part.

Ron Flood
Cedar Machine
North Branch, MN
April, 2022