Engine Block: Crankshaft: Installation: Installation

Fig 1: Main Bearing Identification

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CAUTION: Main bearings are select fit. See Engine/Engine Block/BEARING(S), Crankshaft - Standard Procedure  for proper bearing size selection.

1. Install crankshaft upper main bearings in cylinder block. Ensure oil holes in bearings line up with oil holes in cylinder block. See Engine/Engine Block/BEARING(S), Crankshaft - Standard Procedure .
2. Install the crankshaft to cylinder block.
   Fig 2: Thrust Washer Installation

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   1 - FRONT THRUST WASHER

3. Move crankshaft forward to limit of travel. Lubricate and install the front thrust washer by rolling the washer onto the machined shelf between the No. 2 upper main bulk head and crankshaft thrust surface.
4. Move crankshaft rearward to limit of travel. Lubricate and install the rear thrust washer by rolling the washer onto the machined shelf between the No. 2 upper main bulk head and crankshaft thrust surface.
   Fig 3: Lower Main Bearings Into Main Bearing Caps

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5. Install lower main bearings (3) into main bearing caps (1).
6. Lubricate lower main bearings (3) with clean engine oil.
   NOTE: Lubricate main bearing cap inner bolts (2) with engine oil before installation.
7. Install each main cap (1) and tighten inner bolts (2) finger tight. Align the location reference mark scribed on the #2 main bearing cap during disassembly.
   Fig 4: Moving Crankshaft Forward

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   CAUTION: The #2 main bearing cap must be centered over the inner bolt holes located on the block. Failure to center the bearing cap can result in contact with the crankshaft counterweights and thrust bearing failure.
8. Verify that the #2 main bearing cap is properly centered over the inner bolt holes located in the block. Tighten main bearing cap inner bolts to 20 N.m (15 ft. lbs.).
9. Move crankshaft (1) forward to limit of travel so that crankshaft thrust face (2) is tight against thrust bearing.
10. Verify that a 0.25 mm (0.010 inch) shim or feeler gage will fit between the #2 main cap (rear face) and the crankshaft thrust face. Slide the gage side-to-side all of the way across the cap making sure that the clearance at all areas exceeds 0.25 mm (0.010 inch). The feeler gage should slide all the way down to the #2 main journal.
    Fig 5: Moving Crankshaft Rearward

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11. Move crankshaft (1) rearward to limit of travel so that crankshaft thrust face (2) is tight against thrust bearing.
12. Verify that a 0.25 mm (0.010 inch) shim or feeler gage will fit between the #2 main cap (front face) and the crankshaft thrust face. Slide the gage side-to-side all of the way across the cap making sure that the clearance at all areas exceeds 0.25 mm (0.010 inch). The feeler gage should slide all the way down to the #2 main journal.
13. A properly centered #2 main bearing cap has a minimum of 0.25 mm (0.010 inch) clearance in both the forward and rearward crankshaft positions. If measured clearance is less than 0.25 mm (0.010 inch), loosen and reposition #2 main bearing cap until this minimum clearance can be verified by repeating this procedure.
14. Following verification of proper #2 bearing cap centering, finish tightening the main bearing cap inner bolts an additional 90° turn.
    Fig 6: CRANKSHAFT END PLAY TYPICAL

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15. Measure crankshaft end play. See Engine/Engine Block/CRANKSHAFT - Standard Procedure .
    Fig 7: Measuring Connecting Rod Side Clearance

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16. Install connecting rods and measure side clearance. See Engine/Engine Block/BEARING(S), Connecting Rod - Standard Procedure .
    Fig 8: OIL PICK UP TUBE AND WINDAGE TRAY

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    1 - OIL PICK UP TUBE

    2 - SEAL

    3 - WINDAGE TRAY

    NOTE: The main bearing cap bolts must be tightened in the proper sequence. First the inner main cap bolts, secondly the windage tray bolts, lastly the main cap tie (horizontal) bolts.
17. Install windage tray (3). Lubricate bolts with engine oil. Finger tighten all bolts first, then tighten to 28 N.m + 90° turn (20 ft. lbs. + 90° turn) beginning with the inside bolts tightening outward.
18. Install oil pickup tube (1) and tighten bolt to 28 N.m (20 ft. lbs.).
    Fig 9: Main Bearing Cap Identification

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19. Install the main cap tie (horizontal) bolts and tighten to 28 N.m (20 ft. lbs.).
    Fig 10: REAR CRANKSHAFT OIL SEAL AND RETAINER

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    1 - REAR OIL SEAL AND RETAINER ASSEMBLY

    2 - BOLT

    3 - ALIGNMENT DOWEL

20. Install rear crankshaft oil seal retainer and oil seal. Refer to Engine/Engine Block/RETAINER, Crankshaft Rear Oil Seal - Installation and Engine/Engine Block/SEAL, Crankshaft Oil - Installation .
21. Install oil pump assembly. See Engine/Lubrication/PUMP, Engine Oil - Installation .
22. Install dowel pin in crankshaft. See Engine/Engine Block/SEAL, Crankshaft Oil - Installation .
23. Install crankshaft sprocket. See Engine/Valve Timing/BELT and SPROCKETS, Timing - Installation .
24. Install timing belt and tensioner. See Engine/Valve Timing/BELT and SPROCKETS, Timing - Installation .
25. Install front timing belt cover. See Engine/Valve Timing/COVER(S), Engine Timing - Installation .
26. Install oil pan. See Engine/Lubrication/PAN, Oil - Installation .
27. Install engine assembly. See Engine - Installation .
28. Fill engine crankcase with proper amount of oil.