Removal
Intake Manifold-Natural Gas EnginesRemoval
1. Remove the wiper arm and pivot shaft.
2. Remove the air cleaner outlet tube.
3. Disconnect the fuel line.
4. Disconnect the fuel charging wiring electrical connectors from the eight ignition coils and the eight fuel injectors.
5. Disconnect the fuel charging wiring electrical connector from the fuel pressure sensor.
6. Disconnect the fuel charging wiring electrical connector from the fuel temperature sensor.
7. Disconnect the fuel charging wiring electrical connector from the engine coolant temperature sensor.
8. Separate the isolation valve wiring lead from the upper generator support bracket and disconnect.
9. Disconnect the generator battery cable.
10. Remove the power distribution box access cover.
11. Remove the nut and the wiring.
12. Disconnect the fuel charging wiring electrical connectors at the inner fender splash shield.
13. Disconnect the fuel charging wiring electrical connector from the A/C pressure transducer.
14. Disconnect the fuel charging wiring electrical connector from the cylinder head temperature sensor jumper.
15. Disconnect the fuel charging wiring electrical connector from the camshaft position sensor.
16. Disconnect the fuel charging wiring electrical connector from the generator.
17. Disconnect the fuel charging wiring electrical connector from the throttle position sensor.
18. Disconnect the fuel charging wiring from the radio ignition interference capacitor.
19. Disconnect the fuel charging wiring from the Exhaust Gas Recirculation (EGR) vacuum regulator solenoid.
20. Disconnect the differential pressure feedback Exhaust Gas Recirculation (EGR) system electrical connector.
21. Disconnect the fuel charging wiring from the idle air control valve.
22. Disconnect the throttle cable and the speed control actuator cable from the throttle body.
23. Remove the bolts and position the cables and bracket out of the way.
24. Remove the bolts and position the fuel charging wiring out of the way.
25. Disconnect the hoses from the differential pressure feedback EGR system.
26. Disconnect the vacuum hose from the (EGR) valve.
27. Disconnect the main chassis vacuum supply hose from the throttle body adapter.
28. Disconnect the crankcase ventilation tube at two locations and remove from the vehicle.
29. Disconnect the vacuum hose from the throttle body adapter.
30. Disconnect the vacuum hoses from the EGR vacuum regulator solenoid.
31. Disconnect the EGR tube from the EGR valve.
32. Remove the bolts from the isolation valve.
33. Remove the four bolts.
34. Remove the fuel injection supply manifold and the fuel injectors as an assembly.
35. Disconnect the heater water hose from the intake manifold.
36. Disconnect the upper radiator hose from the water outlet adapter.
37. Remove the bolts and the eight ignition coils.
38. Remove the bolts and the generator support bracket.
39. Remove the bolts and the water outlet adapter.
40. Remove the water thermostat and the Oaring.
41. Remove the bolts.
42. Remove the intake manifold.
43. Remove the intake manifold gaskets.
44. Clean the sealing surfaces.