Crankshaft Main Bearing

4.6L (Hydraulic Valve Adjuster / Camshaft / Cylinder Block / Crankshaft / Piston And Connecting Rod):

a Time required for the plunger to leak down 1.6 mm of travel with 222 N force and leak-down fluid in the lash adjuster.

b The pin bore and crank bearing bore must be parallel and in the same vertical plane within the specified total difference when measured at the ends of a 203 mm bar, 105.5 mm on each side of rod centerline.

MAIN BEARING CAP

Tighten the 9 vertical main bearing cap bolts and the stud bolts in the sequence shown, in 2 stages.





Stage 1: Tighten to 40 Nm (30 lb-ft).
Stage 2: Tighten an additional 90 degrees.

Tighten the 10 crankshaft main bearing jackscrews against the cylinder blocks in the sequence shown in 2 stages.





Stage 1: Tighten to 5 Nm (44 lb-in).
Stage 2: Tighten to 10 Nm (89 lb-in).

Tighten the 10 side bolts and tighten them in the sequence shown.





Tighten to 21 Nm (15 lb-ft)