Crankshaft Main Bearing
DimensionsClearance to Crankshaft
Desired 0.010-0.031 mm (0.0004-0.0012 inch)
Allowable 0.06 mm (0.0024 inch)
Bearing Wall Thickness
Grade 1 2.491-2.495 mm (0.0981-0.0982 inch)
Grade 2 * 2.494-2.498 mm (0.0982-0.0983 inch)
Grade 3 2.497-2.501 mm (0.0983-0.0984 inch)
Grade 4 2.500-2.504 mm (0.0984-0.0986 inch)
Grade 5 2.503-2.507 mm (0.9854-0.0987 inch)
Grade 6 2.506-2.510 mm (0.0987-0.0988 inch)
Thrust Bearing Thickness 2.207-2.257 mm (0.0869-0.0889 inch)
* 0.250 mm (0.010 inch) Undersize, Add 0.125 mm (0.005 inch) to standard or grade 2 thickness.
Tightening Specifications
1. Clean lower cylinder block-to-upper cylinder block sealing surfaces with a shop towel and Metal Surface Cleaner F4AZ-19A536-RA or equivalent meeting Ford specification WSE-M5B392-A to remove all residues that may interfere with the sealer's ability to adhere.
2. Apply a 2-3 mm (0.070-0.118 inch) bead of Black Silicone Rubber F4AZ-19562-B or equivalent meeting Ford specification WSE-M4G323-A1 to lower cylinder block sealing surface of cylinder block as illustrated.
3. Install lower cylinder block over cylinder block alignment dowels and onto upper cylinder block.
NOTE:
Block Bolt Lubrication
Do not lubricate lower cylinder block to upper cylinder block retaining bolts.
Sealer Curing
Tighten all lower cylinder block-to-upper cylinder block retaining bolts within six minutes of installing lower cylinder block onto upper cylinder block.
4. Install all lower cylinder block-to-upper cylinder block retaining bolts.
5. Tighten lower cylinder block to upper cylinder block retaining bolts in sequence, as follows:
Step 1: Tighten fasteners 1 through 10 to 22-28 Nm (17-20 ft. lbs.).
Step 2: Tighten fasteners 11 through 20 to 37-43 Nm (28-31 ft. lbs.).
Step 3: Rotate fasteners 1 through 20 an additional 85-95°.
Step 4: Tighten fasteners 21 through 31 to 20-30 Nm (15-22 ft. lbs.).
6. Verify crankshaft rotates freely and does not bind. Clean any residual sealer from inside the cylinder block with a clean shop towel.