Aerio L4-2.3L (2006)
2) Next, check crank pin diameter. On crank web of No. 3 cylinder, four alphabets are stamped as shown in the figure.
Three kinds of alphabet ("A", "B" and "C") represent the crank pin diameter respectively.
For example, stamped "A" indicates that corresponding crank pin diameter is 49.9940 - 50.0000 mm (1.9683 - 1.9685 inch).
Crank pin diameter
Stamped alphabet Crank pin diameter (without bearing)
A: 49.9940 - 50.0000 mm (1.9683 - 1.9685 inch)
B: 49.9880 - 49.9939 mm (1.9681 - 1.9682 inch)
C: 49.9820 - 49.9879 mm (1.9677 - 1.9680 inch)
3) There are 5 kinds of standard bearings differing in thickness. To distinguish them, they are painted in the colors at the position as indicated in the
figure.
Each color indicated the thickness at the center of bearing.
Standard size of connecting rod bearing thickness
Color painted Bearing thickness
