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Home >> Jeep >> 2018 >> Grand Cherokee Laredo, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 28 (6.2L Engine (Service Information)) >> Engine Block >> Bearing(S), Crankshaft, Main >> Standard Procedure >> Standard Procedure - Crankshaft Main Bearing - Fitting >> Crankshaft Main Bearing Selection

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 AND UPPER      64.9780-64.9859 mm
A ORANGE  0.008 mm U/S (0.0004 in.) U/S (2.442-2.447 in.)
  LOWER AND UPPER      664.9860-64.9940 mm
B BLACK  NOMINAL NOMINAL (2.438-2.443 in.)
  LOWER AND UPPER      64.9941-65.0020 mm
C GREEN  0.008 mm O/S (0.0004 in.) O/S (2.434-2.439 in.)
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