4/16/2019 QuickServe Online | (4310641) ISX15 CM2350 X101 Service Manual

https://quickserve.cummins.com/qs3/portal/service/manual/en/4310641/ 1/4

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Flow Diagram

1. Lubricating oil flow from oil pump2. Thermostat3. Flow through oil cooler4. Lubricating oil cooler flow return to filter head5. Filter bypass valve6. Oil filter7. Flow to turbocharger8. Flow to main oil rifle9. Oil drain from turbocharger

10. Thermostat open - oil flows through oil cooler11. Thermostat closed - oil flows directly to oil filter12. Flow to oil filter13. Bypass valve closed oil flows to oil filter14. Bypass valve open oil flows directly to main oil rifle.

4/16/2019 QuickServe Online | (4310641) ISX15 CM2350 X101 Service Manual

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1. Flow from oil pan through suction tube2. Flow from suction tube to lubricating oil pump3. Pressure regulator4. High-pressure relief valve5. Flow from lubricating oil pump to oil cooler/filter head housing6. Oil return from cooler/filter head housing to main oil rifle7. Main oil rifle8. Flow to main bearing9. Flow to cylinder head

10. Flow to piston cooling nozzle11. Flow to upper idler gear12. Flow to fuel pump idler gear13. Flow to lower idler gear14. Flow to air compressor15. Flow to fuel pump16. Oil transfer from main oil rifle17. Rifle sensing regulator dump to inlet of lubricating oil pump.

4/16/2019 QuickServe Online | (4310641) ISX15 CM2350 X101 Service Manual

https://quickserve.cummins.com/qs3/portal/service/manual/en/4310641/ 3/4

1. Lubricating oil flow from cylinder block to cylinder head2. Flow to valve camshaft bushings3. Flow to camshaft idler gear4. Flow to rocker lever shafts5. Flow to engine brake solenoids6. Flow to intake rocker levers7. Flow to exhaust rocker levers8. Flow to brake rocker levers9. Oil drain to lubricating oil pan.

4/16/2019 QuickServe Online | (4310641) ISX15 CM2350 X101 Service Manual

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Last Modified: 15-Jan-2015

1. Main bearing flow from oil rifle2. Flow to crankshaft bearing3. Flow through crankshaft to piston pin4. Piston pin5. Flow from oil rifle to piston cooling nozzle6. Piston cooling nozzle.