Crankshaft, Main Bearings and Flywheel 1 Installation 3. Install crankshaft. Apply clean engine oil on all parts during installation. 4. Install smooth bearing inserts in main bearing caps, aligning tangs with slots in caps. 5. Install cap thrust bearings, with oil grooves facing away from cap, in the number “1” main bearing cap. IMPORTANT: Do not touch bearing insert surfaces. Oil and acid from your finger will corrode the bearing surface. 1. Install grooved bearing inserts in crankshaft bearing bores, aligning tangs with slots in bores. 6. Install main bearing caps in their original locations with arrows pointing toward flywheel side of engine. 2.
Install block thrust bearings with oil grooves facing away from engine block. IMPORTANT: DO NOT use high speed power tools or air wrenches to tighten main bearing cap screws. NOTE: Main bearing caps have “raised arrows” that are stamped with numbers. Both correspond to their location on the engine block. The number “1” main bearing bore is at flywheel end. Install bearing caps beginning with number 1, then 2, etc. The main bearing cap at gear train end does not have a number. Also install bearing caps with the “arrow” toward the flywheel end. 7. Dip entire main bearing cap screws in clean engine oil. Install cap screws and tighten. DO NOT tighten to specifications. 8.
Using a soft-faced hammer, tap the front end of the crankshaft then the rear end of the crankshaft to align the thrust bearings. 4/7/95 1-47 AllTractorManuals.com Crankshaft Flywheel End ing g Main Main Bearing Cap Bearing Inserts Main Bearing Cap Screw (8) M82283A Block Thrust Bear ing Cap Thrust Bearin g Main Bearing Inserts