Grand Prix V6-3.8L (2007)
Crankshaft Main Bearing: Specifications
Crankshaft Main Bearing caps
Start the crankshaft main bearing cap bolts by hand.
Tighten the crankshaft main bearing cap bolts in equal increments. Do not completely tighten one bolt at a time to prevent the cap from being cocked.
Tighten the bolts to ...................................................................................................... 70 N.m (52 lb ft) to fully seat the crankshaft main bearing caps.
Loosen the bolts ................................................................................................................................................................. 360 degrees counterclockwise.
Tighten the bolts to ........................................................................................................................................... 20 N.m (15 lb ft), then 40 N.m (30 lb ft).
Use J 45059 to tighten the bolts in steps: 35 degrees + 35 degrees + 40 degrees for a total of 110 degrees.
Install the side main bolts.
Tighten the side crankshaft main bearing cap bolts to .............................. 15 N.m (11 lb ft). Use J 45059 to tighten the bolts an additional 45 degrees.
Crankshaft Main Bearing Bore Diameter .................................................................................................................. 68.249-68.270 mm (2.6870-2.6878 in)
