Journey FWD V6-3.5L (2009)
Crankshaft Main Bearing: Procedures
CRANKSHAFT MAIN BEARING FITTING
The main bearings use a "select fit" system to achieve proper oil clearances between the bearings and the crankshaft. When main bearings are being
selected for a new crankshaft, the block and crankshaft grade identification marks must be used to identify the correct main bearings to use.
The cylinder block main bearing bore grade codes (1) are located on the left side front of the engine block, just below the cylinder head mounting
surface. These grade marks (1, 2, 3, or 4) are read left to right, corresponding to main bearing bore 1, 2, 3, or 4.
The grade marks for the crankshaft are located on the rearmost crankshaft counter weight. The crankshaft journal grade marks (A, B, or C) are read left
to right, corresponding with journal number 1, 2, 3, 4. For an example, if the main bore grade on the side of the engine block is 3 and the journal grade
on the #9 counterweight of the crankshaft is B, the proper select fit bearing would be a (2) +0.003 mm (+0.0001 in.).
Refer to the EXAMPLE CRANKSHAFT MAIN BEARING SELECTION DATA for a more detailed example of how to properly select the main
bearings.
NOTE: Service main bearings have a number from (1-5) marked in ink on the bearing surface. For verification, refer to the MAIN BEARING
SELECTION CHART for number to size identification.
