Centinel System – Repair Manual – 007-075   Centinel™ System

NOTE: Fleetguard® Extended Service (ES™) System lubrication oil and fuel filters are required with Centinel™. These filters provide the filtration performance needed for extended service intervals.

Centinel™ is an onboard continuous oil replenishment system that operates as a function of fuel rate. The Centinel™ valve is controlled by the ECM and is actuated proportional to the amount of fuel consumed. The oil burn rate has been designed for continued reliability and durability of the engine. The continuous oil replenishment process stabilizes engine oil quality and allows extended oil and filter change intervals. The extended intervals are a 844,907 km [525,000 mi] oil drain interval and 160,935 km [100,000 mi] oil filter change interval. The calibration setting is a 0.33-percent blend rate. This rate uses 3.8 liters [1 gal] of oil for every 1136 liters [300 gal] of fuel consumed (3.8/1136 = 1/300 = 0.33 percent).

The basic Centinel™ system can operate on vehicles whose engines are equipped with either 12- or 24-VDC electrical systems. Though the Centinel™ control valve operates on 12-VDC, the valve is compatible with either 12- or 24-VDC engines because both engine ECMs (12- or 24-VDC) provide 12-VDC to the valve.

In addition to the valve and mounting hardware, it is necessary to obtain an oil makeup tank and plumbing. Tanks are available through Cummins Inc. with a capacity between the high and low mark of 15.142 liter [4 gal], or 24.605 liters [6.5 gal].

Refer to Centinel™ Master Repair Manual, Bulletin 3666231, for detailed repair procedures on Centinel™ equipped engines.