GASKET 0878620 - Caterpillar

Start By:a. remove crankshaft
Keep all parts clean from contaminants. Contaminants put into the system may cause rapid wear and shortened component life.
The No. 2 and 6 main bearing bosses each have two orifices. The No. 3 and 5 main bearing bosses each have one orifice. A replacement is necessary only if they are damaged. Normally it will only be necessary to be sure the orifices are clean. 1. Use a soft punch to remove the orifices from the cylinder block. The following steps are to install the piston cooling orifices.2. Use tool (A) to install piston cooling orifice (1) (small end first). Install the orifices in main bearing bosses until they are against the counterbore.3. Make sure that the passage is open after the piston cooling orifice is installed.End By:a. install crankshaft