Identification of main and connecting rod bearing caps
1–5 – main bearing caps, 6 – connecting rod bearing caps
The circle shows the designation of the connecting rod base and cap.
Main bearing seat diameters
Nominal dimensions – no designations.
Repair dimensions 0.10 mm – marked with white paint on the main bearing caps.
Root necks
Nominal dimensions – no designations.
Repair dimensions -0.25 mm – marked with green paint on the shoulder of the nearest knee, to the main journal of reduced diameter.
Connecting rod journals
Nominal dimensions – no designations.
Repair dimensions -0.25 mm - a colored mark made on the shoulder of the nearest knee, to the main journal of reduced diameter.
Attention! Crankshafts in which both main and connecting rod journals and liners have reduced dimensions are designated by two colored signs.
Connecting rod bearings
Connecting rod bearings of repair dimensions are marked on the outer surface.