KIT-PURGE VALVE 2G7184 - Caterpillar

D346, D348, D349 Industrial, Marine, and Off-Highway Truck EnginesDescription of Change: Some customers have had problems with engine slobbering on the above models, especially in applications where the engine operates under light loads or at idle rpm for extended periods of time. For assistance with this problem, the earlier piston body assembly which uses rectangular type piston rings has again been made available. The installation of rectangular type piston rings will generally give better control of engine slobbering in light load or idle conditions. The rectangular rings seat (seal) better in these conditions because the lower cylinder pressures have less effect than on keystone type piston rings. To make this conversion, order the necessary quantities of the parts shown in the chart.
Do not use rectangular type piston rings and the pistons for those rings in engines that are operated continuously at full load or where the engine is in a lug condition for extended periods of time. Use of rectangular type piston rings in these applications can result in possible engine damage.