Crankshaft: Service and Repair
CRANKSHAFT REMOVAL1. Remove oil filter and adapter from bedplate.
2. Remove crankcase baffle from engine. Remove all main bearing cap bedplate bolts from the engine block.
3. Using a mallet tap the bedplate loose from the engine block dowel pins.
CAUTION: Do not pry up on one side of the bed- plate. Damage may occur to cylinder block and bed- plate alignment.
4. Bedplate should be removed evenly from the cylinder block dowel pins.
5. Lift out crankshaft from cylinder block. Be sure not damage the main bearings or journals when removing the crankshaft.
OPTIONAL CRANKSHAFT END PLAY CHECK
1. Move crankshaft all the way to the rear of its travel using a lever inserted between a main bearing cap and a crankshaft cheek, using care not to damage any bearing surface. Do not loosen main bearing cap.
2. Use a feeler gauge between number three thrust bearing and machined crankshaft surface to determine end play.
CRANKSHAFT INSTALLATION
1. Install the main bearing shells with the lubrication groove in the cylinder block. Install 0-ring into recess in the block.
2. Make certain oil holes in block line up with oil hole in bearings and bearing tabs seat in the block tab slots.
CAUTION: Do Not get oil on the bedplate mating surface. It will may effect the sealer ability to seal the bedplate to cylinder block.
3. Oil the bearings and journals and install crankshaft.
CAUTION: Use only the specified anaerobic sealer on the bedplate or damage may occur to the engine.
4. Apply 1.5 to 2.0 mm (0.059 to 0.078 in.) bead of anaerobic sealer P/N 4773257 to cylinder block.
5. Install lower main bearings into main bearing cap/bedplate. Make certain the bearing tabs are seated into the bedplate slots. Install the main bearing/bedplate into engine block.
6. Before installing the bolts the threads should be oiled with clean engine oil, wipe off any excess oil.
7. Install main bearing bedplate to engine block bolts 11, 17 and 20 finger tight. Tighten these bolts down together until the bedplate contacts the cylinder block. Then torque these bolts to 34 Nm (25 ft. lbs.).
8. Install main bearing bedplate to engine block bolts (1 thru 10) and torque each bolt to 81 Nm (60 ft. lbs.) in sequence.
9. Install main bearing bedplate to engine block bolts (11 thru 20), with baffle studs in positions 12,13 and 16 and torque each bolt to 34 Nm (25 ft. lbs.) in sequence shown.
10. After the main bearing bedplate is installed, check the crankshaft turning torque. The turning torque should not exceed 5.6 Nm (50 in. lbs.).
11. Install crankcase baffle into the opening in the block. Attach baffle to main bearing cap stud. Tighten nuts to 34 Nm (25 ft. lbs.).
12. Install oil filter adapter and filter.