Detroit Diesel — MBE4000 SERVICE MANUAL

A Detroit Diesel service procedure — check it applies to your exact model before use.

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Procedure

1. Drain the engine coolant into a clean container. If the coolant is clean, save it for later use.
2. Remove the injector nozzle. Refer to section 2.4.1.
3. Remove the protective sleeve from the cylinder head by performing the following steps:
4. Protective Sleeve
5. O-ring Figure 2-21 Removing the Protective Sleeve All information subject to change without notice. (Rev. 3/04) 6SE412 0403 Copyright © 2006 DETROIT DIESEL CORPORATION From Bulletin 2–MBE4000–06 2-31
6. Protective Sleeve
7. O-ring Figure 2-22 Pulling the Protective Sleeve (Rev. 3/04) All information subject to change without notice. 2-32 From Bulletin 2–MBE4000–06 6SE412 0403 Copyright © 2006 DETROIT DIESEL CORPORATION MBE4000 SERVICE MANUAL
8. Remove the O-ring from the cylinder head. See Figure 2-23.
9. Nozzle
10. Protective Sleeve
11. Heat Isolator
12. O-ring Figure 2-23 Removing the O-ring NOTE: Replace the O-ring whenever the protective sleeve is removed.
13. Clean the sealing surfaces of the protective sleeve and the cylinder head.
14. Lubricate the new O-ring with a light coating of engine oil. Install the O-ring in the cylinder head.
15. Install the protective sleeve into the cylinder head. Using the 4-toothed socket (J-46186) and turning in a clockwise direction, torque the protective sleeve to 45 N·m (33 lb·ft).
16. Install the nozzle. Refer to section 2.4.2. Use Detroit Diesel POWER Trac® 3–way Coolant Test Strips to measure nitrite and glycol concentrations. If the test indicates the coolant is acceptable reuse the coolant. If the test indicates the coolant is not within specifications, discard the coolant and replace with new.
17. Check the coolant inhibitor level as follows: [a] Dip the test strip into the coolant for one second, then remove it. Shake the strip vigorously to remove excess liquid. All information subject to change without notice. (Rev. 3/04) 6SE412 0403 Copyright © 2006 DETROIT DIESEL CORPORATION From Bulletin 2–MBE4000–06 2-33
18. Fill the cooling system with the proper amount of coolant.
19. Disconnect the crankshaft position sensor electrical connector located on the rear of the flywheel housing. See Figure 2-24.
20. Electrical Connector
21. Crankshaft Position Sensor
22. Camshaft Position Sensor Figure 2-24 Crankshaft Position Sensor Installation
23. Remove the sensor from the access hole in the flywheel housing.
24. Install a new sensor in the flywheel housing. Push the sensor in until it is fully seated. (Rev. 3/04) All information subject to change without notice. 2-34 From Bulletin 2–MBE4000–06 6SE412 0403 Copyright © 2006 DETROIT DIESEL CORPORATION MBE4000 SERVICE MANUAL
25. Connect the electrical connector. NOTE: Be sure that the correct electrical connector is connected to the sensor. All information subject to change without notice. (Rev. 3/04) 6SE412 0403 Copyright © 2006 DETROIT DIESEL CORPORATION From Bulletin 2–MBE4000–06 2-35
26. Disconnect the batteries.
27. Open the hood. (Rev. 3/04) All information subject to change without notice. 2-36 From Bulletin 2–MBE4000–06 6SE412 0403 Copyright © 2006 DETROIT DIESEL CORPORATION MBE4000 SERVICE MANUAL
28. Remove the heat exchanger mounting bolts, but do not disconnect the fuel lines to the heat exchanger. See Figure 2-25.
29. DDEC-ECU
30. Fuel Heat Exchanger Mounting Bolt
31. Engine Electrical Connector
32. Fuel Heat Exchanger Inlet
33. Vehicle Electrical Connector
34. Banjo (Hollow-Core) Bolt
35. Spacer
36. Banjo Fitting
37. DDEC-ECU Mounting Bolt
38. Fuel Heat Exchanger
39. Engine Wiring Harness
40. Heat Exchanger Case Bolt
41. Fuel Feed Line
42. DDEC-ECU Case Bolt Figure 2-25 DDEC-ECU Control Unit All information subject to change without notice. (Rev. 3/04) 6SE412 0403 Copyright © 2006 DETROIT DIESEL CORPORATION From Bulletin 2–MBE4000–06 2-37
43. Lift up the slide on the locking unit to release the vehicle wiring harness connector and disconnect it from the DDEC-ECU unit. See Figure 2-26.
44. Vehicle Electrical Connector
45. Vehicle Wiring Harness Figure 2-26 Vehicle Electrical Connector (Rev. 3/04) All information subject to change without notice. 2-38 From Bulletin

Source: manual:2-mbe4000-06a - Revised Fuel Filter Removal and Installation Procedure.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.