VALVE GP-BANK 4 5588894 - Caterpillar

Start By:a. remove oil pump 1. Check each main bearing cap (2) for its location on the engine. Each cap has an arrow (1) which points to the front of the block and a number (3) which gives the location of that cap.2. Remove No. 2 through No. 6 main bearing caps from the 3412 Engine and remove No. 2 through No. 4 main bearing caps from the 3408 Engine. Remove the lower bearings from the caps.3. Remove the thrust plates from each side of the No. 4 main bearing on the 3412 Engine. Remove the thrust plates from each side of the No. 3 main bearing on the 3408 Engine.
If the crankshaft is turned in the wrong direction, the tab of the bearing will be pushed between the crankshaft and the cylinder block. This will cause damage to the crankshaft and block.
4. Turn the crankshaft until Tool (A) can be installed in oil hole (4). Turn the crankshaft in the direction which will push the upper main bearing out,