Monday, May 5, 2014
Instructions for Removing the Intake Manifold on a 6 9 Ford
The intake manifold for an delivers fuel and air to the engine in a precise ratio. International Harvester made an eight-cylinder 6.9-liter diesel engine from 1982 until 1987. This engine commonly appears in Ford F series trucks during this period, especially F-250 and F-350 models. The removal of the intake manifold in a Ford truck with a 6.9-liter engine requires you to remove the injection pump and other components to access the intake manifold.
Instructions
- 1
Remove the cables from the negative terminals of both batteries with a socket wrench. Disconnect the air cleaner from the intake manifold. Plug the air intake of the intake manifold with clean shop rags to keep debris out of the engine.
2Detach the electrical connectors from the injection pump. Remove the bracket for the fast idle solenoid with a socket wrench, so you can access the mounting bolts for the injector pump. Disconnect the cables for the cruise control and accelerator from the throttle lever, if your vehicle is so equipped. Remove the bracket for the accelerator cable and push it out of the way.
3Remove the fuel lines, in the elbow inlet and fitting adapter from the injection pump with a socket wrench. Rotate the injection pump out of the way, and disconnect the fuel lines from the injection nozzles. Cap all fuel lines and injection pump fittings with fuel system protective cap set T83T-9395-A to keep debris out of the fuel system.
4Disconnect the retaining nuts from the the injection pump with tool T83T-9000-B. Detach the injection pump from its adapter, and remove the injection pump from the engine.
5Disconnect the fuel return lines from the rear injection nozzles on the number seven and number eight cylinders. Detach the fuel return line on the fuel tank, and disconnect the electrical wiring harness from the engine. Remove the ground cables for the engine wiring harness from the left cylinder head.
6Remove any additional components necessary to access the intake manifold on your vehicle. Disconnect the mounting bolts for the intake manifold with a socket wrench, and remove the intake manifold from the cylinder heads.
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