Cummins ISX11.9 CM2250 – Service Manual 100-002   Engine Diagrams

Engine Views

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Front View – ISX11.9 CM2250

1. Refrigerant compressor
2. Drive belt, refrigerant compressor
3. Thermostat housing
4. Exhaust gas recirculation (EGR) crossover tube
5. Air intake connection
6. Camshaft position sensor
7. Lubricating oil fill tube
8. Front gear housing cover
9. Vibration damper
10. Lubricating oil pan
11. Front engine mount
12. Dual outlet water pump
13. Belt tensioner, alternator
14. Drive belt, alternator
15. Variable geometry turbocharger
16. Alternator
17. Belt tensioner, refrigerant compressor

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Left Side View – ISX11.9 CM2250

1. Air intake connection
2. EGR crossover tube
3. Crankcase breather housing
4. Crankcase breather pressure sensor
5. Intake manifold temperature/pressure sensor
6. Fuel rail
7. Injector supply line
8. Aftertreatment purge air solenoid
9. High-pressure relief valve
10. Cylinder head wiring harness pass-through
11. OEM fuel return
12. Fuel rail supply line
13. Aftertreatment fuel shutoff manifold
14. Fuel pump actuator
15. Crankshaft position sensor
16. Fuel pump, high-pressure
17. Fuel pump gear pump
18. Lubricating oil dipstick
19. Pressure-side fuel filter
20. Electronic control module (ECM)
21. OEM fuel supply connection
22. Fuel lift pump (behind ECM)
23. Air compressor
24. Front gear housing
25. Crankcase breather vent tube
26. Lubricating oil fill tube
27. Camshaft position sensor

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Rear View – ISX11.9 CM2250

1. Aftertreatment fuel injector fuel supply line
2. Aftertreatment fuel injector coolant supply line
3. Aftertreatment fuel injector
4. Aftertreatment fuel injector coolant return line
5. Flywheel
6. Rear gear cover

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Right Side View – ISX11.9 CM2250

1. Flywheel housing
2. EGR cooler coolant return line
3. Aftertreatment coolant supply port
4. EGR cooler
5. Aftertreatment fuel injector
6. Aftertreatment intake NOx sensor
7. Turbocharger heat shield
8. EGR valve
9. Electric variable geometry turbocharger actuator
10. EGR orifice pressure sensor
11. EGR differential pressure sensor
12. EGR temperature sensor
13. EGR crossover tube
14. Thermostat housing
15. Exhaust manifold heat shield
16. Exhaust manifold
17. Dual outlet water pump
18. EGR cooler coolant inlet tube
19. Coolant filter
20. Lubricating oil pan drain plugs
21. Turbocharger oil supply line
22. Lubricating oil filter
23. Turbocharger oil drain tube

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Top View – ISX11.9 CM2520

1. Turbocharger air inlet
2. Turbocharger compressor outlet
3. Variable geometry turbocharger, electric
4. Turbocharger exhaust outlet
5. EGR cooler
6. Rear gear housing
7. Flywheel housing
8. Rocker lever cover
9. Air intake manifold
10. EGR crossover tube
11. Lubricating oil fill tube
12. Fan hub
13. Coolant temperature sensor
14. Refrigerant compressor

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Aftertreatment Components – ISX11.9 CM2250

1. Aftertreatment diesel particulate filter differential pressure tubes
2. Aftertreatment diesel particulate filter intake temperature sensor
3. Aftertreatment diesel particulate filter differential pressure sensor
4. Aftertreatment diesel particulate filter outlet temperature sensor
5. Aftertreatment diesel particulate filter temperature sensor interface module
6. Aftertreatment diesel particulate filter
7. Aftertreatment diesel exhaust fluid dosing valve
8. Aftertreatment decomposition tube
9. Aftertreatment selective catalytic reduction (SCR) outlet temperature sensor
10. Aftertreatment outlet NOx sensor
11. Aftertreatment SCR catalyst temperature sensor interface module
12. Aftertreatment SCR intake temperature sensor
13. Aftertreatment SCR catalyst
14. Aftertreatment diesel oxidation catalyst
15. Aftertreatment diesel oxidation catalyst intake temperature sensor
16. Aftertreatment diesel exhaust fluid dosing unit
17. Aftertreatment diesel exhaust fluid controller