Crankshaft, Main Bearings and Flywheel CRANKSHAFT FRONT OIL SEAL CRANKSHAFT AND MAIN BEARINGS Replacement Removal NOTE: Timing gear covers are similar. The most common applications are shown. 1. Check crankshaft end play. (See Checks, Tests and Adjustments in this section.) Remove timing gear cover. (See Camshaft and Timing Gear Train in this section.) 2. Remove rear oil seal. (See procedure in this group.) 3. Remove flywheel housing, if equipped. (See procedure in this group.) 1 Replace oil seal using a driver set. Install seal with lip toward inside of gear housing cover. Install seal flush with surface of cover. 4. Remove crankcase extension housing, if equipped.
(See procedure in this group.) 5. Remove timing gear housing. (See Camshaft and Timing Gear Train in this section.) 6. Check crankshaft bearing clearance. (See Checks, Tests and Adjustments in this section.) IMPORTANT: Connecting rod end caps must be installed on the same connecting rods from which they were removed. Note alignment marks on caps and rods. 7. Remove connecting rod cap screws and end caps. 8. Push pistons and connecting rods away from crankshaft. IMPORTANT: Main bearing caps must be installed on the same main bearings from which they were removed. 3TN66 9. Remove main bearing cap screws, caps and cap thrust bearings. Timing Gear Cover 10.Remove crankshaft.
11.Remove block thrust bearings and main bearing inserts. Crankshaft Front Oil Seal 12.Inspect all parts for wear or damage. (See Inspection/Replacement procedures.) M82282A 3TNA72 1-46 4/7/95 AllTractorManuals.com Timing Gear Cover Cra Fron Oil nkshaft t Seal M82281A Cra Fron Oil nkshaft t Seal