Crankshaft: Service and Repair
Removal1. Remove engine from vehicle and place on a workstand. Remove drive belt.
2. Remove oil pan and discard oil pan gasket.
3. Remove engine front cover.
4. Check timing chain deflection. Remove timing chain and crankshaft and camshaft sprocket.
5. Invert engine on the workstand. Remove push rod. Remove oil pump screen cover and tube and oil pump.
6. Make sure all bearing caps (main and connecting rod) are marked so that they can be installed in their original positions. Turn crankshaft until the connecting rod being serviced is in the up position. Remove connecting rod cap. Push connecting rod and piston assembly up in the cylinder. Repeat procedure for the remaining connecting rods.
7. Remove crankshaft main bearing caps.
8. CAUTION: Handle the crankshaft with care to avoid possible fracture or damage to the finished surfaces or possible engine damage may occur.
Carefully lift the crankshaft out of the cylinder block so that the upper main thrust bearing surfaces are not damaged.
Installation
1. NOTE: If connecting rod bearings, crankshaft main bearings and crankshaft thrust main bearings are to be reused, they should be identified to make sure that they are installed in their original positions.
Remove crankshaft main bearings from cylinder block and main bearing caps.
2. Remove connecting rod bearings from the connecting rods and caps.
3. Inspect all machined surfaces on the crankshaft for nicks, scratches, scores, etc., which could cause premature bearing wear. Lightly stone all such surfaces.
4. If the crankshaft main bearing journals have been refinished to a definite undersize, install the correct undersize crankshaft main bearings.
5. CAUTION: Make sure crankshaft main bearings and bearing bores are clean. Foreign material under the crankshaft main bearings will distort the crankshaft main bearing and cause a failure.
Place upper crankshaft main bearings in position in the bores with the tang fitted in the slot provided.
6. Install lower crankshaft main bearings in main bearing caps.
7. Carefully lower crankshaft into place.
8. Check the clearance of each crankshaft main bearing. Select fit the crankshaft main bearings for proper clearance.
9. NOTE: Make sure main crankshaft bearing caps are installed in their original positions and orientation.
After crankshaft main bearings have been fitted, apply a light coat of Engine Assembly Lubricant D9AZ-19579-D or equivalent meeting Ford specification ESR-M99C80-A to the journals, bearings and crankshaft rear oil seal surface. Install all bearing caps. Apply Silicone Gasket and Sealant F7AZ-19554-EA or equivalent meeting Ford specification WSK-M2G343-A4 to gap between rear crankshaft main bearing and cylinder block. Take care to keep silicone sealer from parting surfaces between cylinder block and cap.
10. Lubricate the journal with Engine Assembly Lubricant D9AZ-19579-D or equivalent meeting Ford specification ESR-M99C80-A. Install the thrust bearing cap with the bolts finger-tight. Pry the crankshaft forward against the thrust surface of the upper half of the crankshaft thrust main bearing. Hold the crankshaft cap to the rear. This will align the thrust surfaces of both halves of the crankshaft thrust main bearing. Retain the forward pressure on the crankshaft.
11. Check crankshaft end play.
12. If end play exceeds specification, replace upper and lower crankshaft thrust main bearings. If the end play is less than specification, inspect thrust bearing faces for damage, dirt or improper alignment. Install crankshaft thrust main bearings and align the faces. Recheck end play.
13. Install new connecting rod bearings in the connecting rods and caps. Check the clearance of each connecting rod bearing.
14. If connecting rod bearing clearances are to specification, apply a light coat of Engine Assembly Lubricant D9AZ-19579-D or equivalent meeting Ford specification ESR-M99C80-A to the journals and connecting rod bearings.
15. Turn the crankshaft throw to the bottom of the stroke. Push the piston all the way down until the connecting rod bearing seats on the crankshaft journal.
16. Install lower connecting rod bearing and connecting rod cap.
17. After piston and connecting rods have been installed, check connecting rod crankshaft journal side clearance.
18. Turn engine on the workstand so that the front end is up. Install timing chain, crankshaft sprocket and camshaft sprocket, engine front cover, new crankshaft front seal and crankshaft pulley and damper.
Turn engine on the workstand so that the rear end is up. Install crankshaft rear oil seal.
19. Clean oil pan, oil pump and oil pump screen cover and tube.
20. Prime oil pump by filling the inlet opening with oil and rotating the oil pump intermediate shaft until oil emerges, from the outlet opening. Install oil pump, oil pump screen cover and tube and oil pan.
21. Position flywheel on the crankshaft. Tighten to 73-87 Nm (54-64 ft. lbs.).
22. Turn engine on the workstand so that the engine is in the normal upright position. Install drive belt tensioner.
Install drive belt.
23. Remove engine from the workstand. Install engine.
Crankshaft End Play
1. Install crankshaft into cylinder block.
2. Pry against No. 2 main bearing cap and check crankshaft end play in both directions as shown.
3. If end play exceeds specifications, grind the crankshaft and install an oversize crankshaft thrust main bearing or washer or replace crankshaft and crankshaft thrust main bearing or washer.