LINK AS-TRACK 5594916 - Caterpillar

Removal Procedure
Start By:
Remove the crankshaft. Refer to Disassembly and Assembly, "Crankshaft - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g00659572
Remove two bolts (1) that secure the upper half of main bearing cap (2) to the lower half of main bearing cap (4) .
Separate the upper half of main bearing cap (2) from the lower half of main bearing cap (4) .Note: Dowels (3) are installed in each bearing cap in order to align the two halves of the main bearing cap.
Remove the main bearings from the main bearing caps. Mark the main bearings for later installation.