Main Bearings Replacement

REMOVAL
1. Engine oil pan and oil pump strainer from cylinder block.
2. Ten bolts and bearing cap supports, main bearing caps and main bearing lower half.
3. Main bearing upper half.
^ Inspect the main bearings for pitting, scratches, wear or damage. If any of these conditions are found, replace both upper and lower halves of main bearings.

NOTE: Any time main bearings must be replaced, both the upper and lower half should be replaced as a set. Never replace only one half.

INSTALLATION





NOTE: The main bearing upper half has an oil groove. Install with oil groove to cylinder.

1. Main bearing upper half.





2. Bearing cap supports and main bearing caps to cylinder block. Install each cap in ascending order of numbers 1, 2, 3, 4 and 5 starting from the crankshaft pulley side and going to the flywheel side. Make sure all arrow marks point toward crankshaft pulley side.
^ Tighten the main bearing cap bolts to 54 Nm (40 ft. lbs.).

NOTE:
^ Gradual and uniform tightening is important for main bearing cap bolts.
^ After tightening main bearing bolts, check to be sure that crankshaft rotates smoothly when turned by hand.

3. Oil pump strainer and engine oil pan to cylinder block.