Crankshaft Main Bearing Selection
WARNING: This page is about a different variant/trim than selected.
The main bearings are "select fit" to achieve proper oil clearances. For main bearing selection, the crankshaft counterweight has grade identification marks stamped into it. These marks are read from left to right, corresponding with journal number 1, 2, 3, 4 and 5.
NOTE:
Service main bearings are coded. These codes identify what size (color) the bearing is.
MAIN BEARING SELECTION CHART
| GRADE | COLOR | mm | In | FOR USE WITH JOURNAL SIZE |
|---|---|---|---|---|
| LOWER | 64.988-64.995 mm | |||
| A | ORANGE | 0.008 mm U/S | (0.0004 in.) U/S | (2.5585- 2.5588 in.) |
| LOWER | 64.996-65.004 mm | |||
| B | BLACK | NOMINAL | NOMINAL | (2.5588-2.5592 in.) |
| LOWER | 65.005-65.012 mm | |||
| C | GREEN | 0.008 mm O/S | (0.0004 in.) O/S | (2.5592-2.5595 in.) |