3204 VEHICULAR ENGINE FOR 943 & 953 TRACK-TYPE LOADERS Caterpillar

Remove And Install Piston Cooling Orifices

START BY:

a. remove crankshaft and gear

NOTE: The piston cooling orifices are installed in the No. 2 and No. 4 main bearing bosses in the cylinder block. 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 four orifices (1) from the cylinder block.

2. Use tool (A) to install the origices in main bearing bosses No. 2 and 4 until they are against the counterbore. Be sure the orifices are open after they are installed.

END BY:

a. install crankshaft and gear