Journal

PROCEDURES





1. Measure the main and connecting rod journals. Measure the journals in eight locations.
2. Write down the figures on a sketch to give a profile of each journal. A study of the readings will tell if the crankshaft is usable as is, if it must be reground, or if it must be replaced.
3. The bearing journal diameter specification is:
Main Bearing: 63.983-64.003 mm (2.5190-2.5198 inch).
Connecting Rod: 58.682-58.702 mm (2.3103-2.3111 inch).
4. The main and connecting rod bearing journal out-of-round Limit is:
Maximum (in 45°): 0.008 mm (0.0003 inch).
Total: 0.015 mm (0.006 inch).
5. If a main journal or connecting rod journal diameter is less than the specification, grind the journal to match an undersize bearing.