GEAR-RING 1620192 - Caterpillar

Start By:a. remove suction pipe and strainer, delivery pipe and the relief valve If the rear main bearing is to be removed without the crankshaft removal, the flywheel, the flywheel housing, the rear oil seal and the bridge piece will have to be removed. The front main bearing can only be removed if a torque wrench is available to remove the front main bearing bolts. If a torque wrench and Tool (A) is available, then the front main bearing can be removed together with the oil pump.1. Remove all other necessary components to access the main bearing to be removed.2. Remove the two bolts3. Remove the main bearing cap.4. Remove the lower bearing half from the cap. Keep the lower bearing half with the main bearing cap.5. With a suitable soft tool, push the upper half bearing from the side opposite to the location tab to remove the bearing tab from its recess in the bearing housing. Carefully rotate the crankshaft to release the bearing from the housing.
Keep the bearing halves in their correct positions.
The following steps are for the installation of the main bearing.6. Clean the upper half bearing.7. Lubricate the bearing surface with clean engine oil.
Only the upper half bearing has lubrication holes that must be positioned correctly to the cylinder block side.
8. Install the plain end of the upper bearing between the crankshaft journal and the bearing housing that has the location tab.9. Slide the upper bearing into the housing until the tab in the bearing is in the correct position in the recess of the housing.10. Clean the lower half bearing.11. Lubricate the bearing surface with clean engine oil.12. Install the tab of the lower bearing half into the recess of the bearing cap.
Make sure the components are correctly positioned to the cylinder block or the bearing cap.
13. Install the bearing cap to the cylinder block with both location tabs on the same side.14. Lubricate the threads of the bolts with clean engine oil.15. Install two bolts. Tighten the two bolts gradually and evenly to a torque of 265 N m (196 lb ft).16. Rotate the crankshaft to make sure the crankshaft turns easily.17. Check the crankshaft end play if the thrust washers were removed. Refer to the topic, "Crankshaft Thrust Washers".18. Install any components that were removed to gain access to the main bearing.End By:a. install suction pipe and strainer, delivery pipe and the relief valve