3204 VEHICULAR ENGINE FOR D3 TRACTOR, 931 TRACK-TYPE LOADER Caterpillar

start by:

a) remove fuel injection valves

1. Remove coolant from cooling system.

2. Remove precombustion chamber with tool (A).

3. Remove the precombustion chamber and gasket. Remove the O-ring seal from chamber.

Install Precombustion Chambers

1. Install new O-ring seal (1) on precombustion chamber (2).

2. Put 5P3931 Anti-Seize Compound on the threads of the chamber.

3. Install gasket on chamber.

4. Put liquid soap on O-ring seal (1) and in the bore in the cylinder head.

5. Install chamber in head with tool (A). Tighten chamber to 150 ± 10 lb.ft. (205 ± 14 N·m).

end by:

a) install fuel injection valves