Cummins ISX11.9 CM2250 – Service Manual 200-002   Flow Diagram, Lubricating Oil System

Flow Diagram

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1. Lubricating oil supply from the lubricating oil pan
2. Lubricating oil pump
3. Lubricating oil pressure sensing line from the main oil rifle
4. Lubricating oil pressure regulator
5. High pressure relief valve
6. Oil return to the lubricating oil pan
7. Lubricating oil transfer tube
8. Lubricating oil transfer connection
9. Oil flow through the cylinder block to the lubricating oil filter head
10. Oil flow from the filter head to the main oil rifle
11. Right oil rifle
12. Oil flow to the rear idler gear
13. Left oil rifle
14. Oil flow to the overhead
15. Oil flow to rocker lever shaft
16. Rocker lever shaft
17. Rocker levers
18. Lubricating oil flow to the push tubes
19. Oil supply to crosshead
20. Lubricating oil supply to the cam followers
21. Cam followers
22. Lubricating oil flow to the camshaft
23. Lubricating oil flow around the camshaft
24. Lubricating oil flow to the main bearings
25. Crankshaft main bearing journal
26. Crankshaft connecting rod journal
27. Connecting rod
28. Lubricating oil flow around the piston pin
29. Front gear housing
30. Lubricating oil flow to the air compressor.

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1. Lubricating oil flow from the lubricaing oil pump
2. Lubricating oil thermostat closed
3. Lubricating oil through the oil filter head to the oil filter
4. Lubricating oil filter
5. Lubricating oil flow to the main oil rifle
6. Lubricating oil thermostat open
7. Lubricating oil flow to the lubricating oil cooler
8. Lubricating oil flow through the lubricating oil cooler core
9. Lubricating oil flow to the lubricating oil filter head.

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1. Lubricating oil supply to the turbocharger bearing housing
2. Lubricating oil return to the lubricating oil pan
3. Lubricating oil main rifle
4. Lubricating oil passage from the cylinder block to the rear gear housing
5. Lubricating oil flow through the rear gear housing
6. Lubricating oil supply to the fuel pump
7. Fuel pump.

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1. Lubricating oil supply from the lubricating oil cooler
2. Lubricating oil filter bypass valve closed
3. Lubricating oil flow to the lubricating oil filter
4. Filtered lubricating oil flow to the main oil rifle
5. Lubricating oil filter bypass valve open
6. Unfiltered lubricating oil flow to the main oil rifle.