PIN AS 4V2590 - Caterpillar

Remove And Install Connecting Rod Bearings
preparatory step: a) remove oil pan It will be necessary to remove the oil pump and the front sump pickup to remove all of the connecting rod bearings.1. Rotate the crankshaft clockwise (as viewed from the front of engine) until connecting rod cap is in position for removal. 2. Remove the connecting rod cap retaining bolts (1). Remove cap and lower half of bearing. Remove bearing from cap.3. Push the connecting rod away from crankshaft and remove upper half of bearing.
(Engine before 32R285 illustrated) Engines 32R1 to 32R284 have connecting rods that use bearings with tabs. Engines 32R285-UP have connecting rods marked even cylinder only and odd cylinder only and have bearings without tabs. The bearings are kept from turning in the connecting rod by dowels in the connecting rod and cap. The connecting rods marked even cylinder only are used in the left side of the engine as seen from the flywheel. The connecting rods marked odd cylinder only are used in the right side of the engine as seen from the flywheel.4. Install upper half of new connecting rod bearing in connecting rod. Lubricate the bearing and crankshaft journal with clean SAE 30 engine oil.5. Install lower half of new bearing in cap. Lubricate bearing with clean SAE 30 engine oil.6. Lubricate the threads of retaining bolts with 9M3710 Anti-Seize Compound.7. Position the connecting rod bearing cap and install retaining bolts. Tighten both bolts initially to 90 5 lb. ft. (12.5 0.7 mkg). Mark end of bolt and bearing cap. Tighten each bolt an additional 120° 5° (from mark) after initial tightening.8. Repeat above steps for each remaining connecting rod bearing.9. Install the oil pump and front sump pickup assembly.concluding step: a) install oil pan