Crankshaft Main Bearings

The main bearing inserts are selective fit. Refer to Section 03-00.

Removal

1. Drain the crankcase. Remove the oil level dipstick (6750). Remove the oil pan (6675)and related parts.

2. Remove the oil pump screen cover and tube (6622) and the oil pump (6600).

3. Replace one crankshaft main bearing (6333) at a time, leaving the other crankshaft main bearings securely fastened. Remove the main bearing cap to which new crankshaft main bearings are to be installed.

4. Insert Main Bearing Insert Tool TOOL-6331-E in the oil hole in the crankshaft (6303).

5. Rotate the crankshaft in the direction of engine rotation to force the crankshaft main bearing out of the cylinder block (6010).

6. Clean each crankshaft journal. Inspect the journals and thrust faces (thrust bearing) for nicks, burrs or bearing pickup that would cause premature crankshaft main bearing wear.

7. If the rear crankshaft main bearing is being replaced, remove and discard the crankshaft rear oil seal (6701).

   

Installation

1. To install an upper crankshaft main bearing, place the plain end of the crankshaft main bearing over the shaft on the locking tang side of the block and partially install the crankshaft main bearing so that Main Bearing Insert Tool TOOL-6331-E can be inserted in the oil hole in the crankshaft. With Main Bearing Insert Tool TOOL-6331-E in the hole in the crankshaft, rotate the crankshaft in the opposite direction of engine rotation until the crankshaft main bearing seats itself. Remove the tool.

2. Install the bearing cap.

3. Select-fit the bearing for proper clearance. Refer to Section 03-00.

4. If the crankshaft main bearing is being replaced on journal number 1, 2 or 4, apply a coat of Motorcraft X0-10W30-QSP or -DSP engine oil or equivalent meeting Ford specification ESE-M2C153-E to the journal and crankshaft main bearings and install the bearing cap. Tighten the cap bolts. On 5.0L engines (6007), tighten cap bolts to 82-95 Nm (60-70 lb-ft); on 5.8L engines, tighten to 129-142 Nm (95-105 lb-ft).

5. NOTE: Join components within 15 minutes of applying specified bead size of silicone rubber.

   Before replacing rear main cap, apply a 1.58mm (1/16-inch) diameter bead of Silicone Rubber F4AZ-19562-B or equivalent meeting Ford specifications WSE-M4G323-A1 and ESE-M4G195-A in shaded area of cylinder block as shown.

   

   Item	Part Number	Description
   1	—	Apply 1.58mm (1.16-In.) Dia. Bead of Silicone Rubber F4AZ-19562-B or WSE-M4G323-A1 and ESE-M4G195-A Sealer As Indicated on Bearing Cap (Both Sides)
   2	—	Seal Groove
   3	—	Leave 3.10mm (1/8-In.) Gap for Sealer Expansion
   4	—	1.58mm (1/16-In.) Dia. Bead Silicone Rubber F4AZ-19562-B or WSE-M4G323-A1 and ESE-M4G195-A Sealer
   5	6010	Cylinder Block
   6	—	From Forward Face of Slinger Groove to Rear Face of Block
   7	6333	Crankshaft Main Bearing

6. Lubricate the journal with Motorcraft XO-10W30 QSP or DSP engine oil or equivalent meeting Ford specification ESE-M2C153-E and install the rear main bearing cap. Tighten the cap bolts on 5.0L engines to 82-95 Nm (60-70 lb-ft); on 5.8L engines to 129-142 Nm (95-105 lb-ft).

7. If the thrust bearing cap (No. 3 main bearing) has been removed, install it as follows:

   Lubricate the journal with Motorcraft XO-10W30-QSP or DSP or equivalent meeting Ford specification ESE-M2C153-E engine oil and install the thrust bearing cap with the bolts finger-tight. Pry the crankshaft forward against the thrust surface of the upper half of the thrust bearing. Hold the crankshaft cap to the rear. This will align the thrust surfaces of both halves of the crankshaft thrust main bearing (6337). Retain the forward pressure on the crankshaft. Tighten the cap bolts on 5.0L engines to 82-95 Nm (60-70 lb-ft); on 5.8L engines to 129-142 Nm (95-105 lb-ft).

8. Install a new crankshaft rear oil seal.

9. Force crankshaft toward the rear of the engine.

10. Check crankshaft end play. Refer to Section 03-00.

    Thrust Bearing Cap, Installation

    

11. Clean the oil pump screen cover and tube. Prime the oil pump by filling the inlet opening with oil and rotating the oil pump intermediate shaft (6A618) until oil emerges from the outlet opening. Install the oil pump and oil pump screen cover and tube.

12. Position the oil pan gaskets on the oil pan. Install the oil pan and related parts. Install the oil level dipstick.

13.  CAUTION: To prevent oil from entering the PCV system during air-powered oil fills, the closure hose should be disconnected from the oil fill pipe (6A868) and positioned away from the oil source. Cover the hose port with a shop towel to prevent oil from spilling onto the engine during oil fill. Reconnect the closure hose after the oil has been filled to the proper level.

    Fill the crankcase with the proper grade and quality of engine oil. Start the engine and check for oil pressure. Operate the engine at fast idle and check for oil leaks.