Chrysler 68045438AB Exhaust Manifold

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Before you begin the removal of the exhaust manifold the following instructions should be followed; Switch off the starter motor and disconnect the cable from the negative terminal. Chock the rear wheels, engage the parking brake, lift the front of the vehicle and safely latch the jackstands. Loosen the exhaust pipe from the bolt that is attached to the exhaust manifold. For 4.7L V8 models it is necessary to disconnect the drivebelt, remove engine coolant, take out the air inlet duct and remove air filter housing. Then you have to take off the air conditioning compressor, and also the accumulator bracket and separate the heater hoses at the engine and at the starter. All models: take off the exhaust manifold heat shields, then take out the exhaust manifold mounting bolts and the manifold will come off the vehicle. Before sealing up flush and remove old gasket deposits on mating surfaces inspect manifold for distortion and cracks visually check for manfold warpage with a straight edge. Note: If this is not enough, one should not hesitate to carry the manifold to an automotive machine shop for resurfacing. Fit the exhaust manifold with a new gasket into position and tighten down the mounting bolts just enough to be finger tight. Then, just as previously, starting at the center and gradually moving toward the end, and then the same in the opposite direction, to the set torque, tighten the mounting bolts and also the bolts to fasten the heat shield. Replace the rest of the parts in the manner in opposite order to the extraction and in case of 4.7L right side exhaust manifold replace the coolant. Last, the engine should be run and blown exhaust can be checked between the manifold and cylinder head as well as the manifold and exhaust pipe.

Finally, install the heat shields and apply anti-seize compound to the exhaust pipe-to-exhaust manifold bolts, tightening them securely.

Remove the exhaust manifold heat shields, then take out the exhaust manifold mounting bolts and remove the manifold from the vehicle.

The first step is to disconnect the cable from the negative terminal of the battery.

Remove the exhaust manifold and the gasket. For installation, clean the manifold and head gasket surfaces and check for cracks and flatness. Replace the exhaust manifold gaskets.

Use new gaskets and apply anti-seize compound on the bolt threads.

Tighten the heat shield bolts to the specified torque and then install the remaining components in the reverse order of removal.

Use new gaskets and apply anti-seize compound on the bolt threads.

Tighten the heat shield bolts to the specified torque and then install the remaining components in the reverse order of removal.

Disconnect the exhaust pipe-to-manifold connections. It's recommended to apply penetrating oil on the studs/bolts and let it soak in for about 10 minutes before attempting to remove them. Note that it may be easier to disconnect the oxygen sensors and remove the front exhaust pipes completely.