Silverado 1500 4WD V8-5.3L VIN Z Flex Fuel (2005)
Crankshaft Main Bearing: Specifications
Main Bearing Cap
Tighten the bearing cap bolts and studs.
Tighten the inner M10 bearing cap bolts first pass in sequence ........................................................................................................... 20 Nm (15 ft. lbs.)
Using a plastic faced hammer, tap the crankshaft rearward then forward to align the thrust bearings.
Tighten the inner M10 bolts final pass in sequence ............................................................................................................. 80 degrees using the J45059.
Tighten the outer M10 bolts/studs first pass in sequence ..................................................................................................................... 20 Nm (15 ft. lbs.)
Tighten the outer M10 bolts/studs final pass in sequence .................................................................................................... 51 degrees using the J45059.
Tighten the bearing cap side M8 bolts to ................. 25 Nm (18 ft. lbs.) Tighten the bolt on one side of the bearing cap and then tighten the bolt on the
opposite side of the same bearing cap.
Crankshaft Main Bearing Clearance - Production ................................................................................................... 0.02 - 0.052 mm (0.0008 - 0.0021 inch)
Crankshaft Main Bearing Clearance - Service ........................................................................................................ 0.02 - 0.065 mm (0.0008 - 0.0025 inch)
Crankshaft Main Bearing Bore Diameter ................................................................................................................ 69.871 - 69.889 mm (2.75 - 2.751 inch)
Crankshaft Main Bearing Bore Out-of-Round ................................................................................................................................. 0.006 mm (0.0002 inch)
