3-9. CRANKSHAFT MAIN BEARINGS - REPLACE (Contd)
Install bearing halves dry for the following
Install a dry upper bearing half (3) over the
crankshaft journal for main bearing number
1 such that the bearing tab will fit into the
notch in cylinder block. If used main
bearing is being installed, install main
bearing half in the same position it was
Be very careful not to scratch the crankshaft
or the bearing bore during the installation of
the upper bearing halves. A scratched or
damaged crankshaft, or bearing bore, could
result in premature engine failure.
Simultaneously push the upper bearing
half, with a flat blade screwdriver, and turn
the crankshaft until bearing tab is in notch
in cylinder block.
Install a dry lower main bearing half (4) in
number 1 main bearing cap (2). Tab on
bearing must be in the notch in bearing
cap. If used main bearing is being
installed, install bearing in the same bearing
cap it was removed from.
Place plastigage on the surface of lower
main bearing half (4).