Lincoln Workshop Service and Repair Manuals

Crankshaft Main Bearing: Specifications

Crankshaft 

Main bearing journal

Diameter ......................................................................................................................................................  67.481-67.505 mm (2.6568-2.6576 inch)
Maximum taper ......................................................................................................................................................................  0.004 mm (0.0002 inch)
Maximum out-of-round ...................................................................................................................  0.0075 mm (0.0003 inch) between cross sections
Clearance-to-cylinder block ............................................................................................................................  0.048-0.024 mm (0.0019-0.0009 inch)

Connecting rod journal

Diameter ......................................................................................................................................................  53.003-52.983 mm (2.0867-2.0859 inch)
Maximum taper ......................................................................................................................................................................  0.004 mm (0.0002 inch)
Maximum out-of-round ...................................................................................................................  0.0075 mm (0.0003 inch) between cross sections

Maximum end play ................................................................................................................................................  0.075-0.377 mm (0.0030-0.0148 inch)
Main bearing bore inside diameter ........................................................................................................................  72.400-72.424 mm (2.850-2.851 inch)

Vertical Main Bearing Cap Fasteners 

Discard the fasteners.

First pass .................................................................................................................................................................................................  40 Nm (30 lb-ft).
Final pass ...................................................................................................................................................................................  Tighten an additional 90°

Main Bearing Side Bolts 

Discard the bolts.