Chevrolet 1977 10 Series, Repair Manual, Page: 461 / 468

CLUTCHES
7C-3
PILOT BEARING REPLACEMENT
The clutch pilot bearing is an oil impregnated type
bearing pressed into the crankshaft. This bearing requires
attention when the clutch is removed from the vehicle, at
which time it should be cleaned and inspected for excessive
wear or damage and should be replaced if necessary.
To remove, install Tool J - 1448 and remove bearing from
crankshaft, as shown in (Fig. 7C-4A). In replacing this
bearing, use Tool J - 1522. Place bearing on pilot oF tool with
radius in bore of bearing next to shoulder on tool and drive
into crankshaft. Lubricate with several drops of machine oil.
Fig. 7 C -4 A -C lu tc h P ilo t B e a rin g R em oval (T y p ic a l)