ENGINE AR-COMPLETE 2396634 - Caterpillar

Illustration 1.
Illustration 2.Adaptable To: The new parts are adaptable to earlier engines when used together but a complete set of new pistons and connecting rods must be installed. On 3406 Truck Engines with direct injection, the fuel ratio control must be set at +.035" (0.89 mm) when the new pistons are installed. Since the new pistons and connecting rods do not have the same weight as the former pistons and connecting rods, the new and former parts must not be mixed in an engine. If the new and former parts are used together in an engine, the result is added stress and vibration in the engine.