Attention! The engine must be completely cool.
Removing
1. Disconnect the negative battery cable.
2. Lubricate the exhaust manifold mountings with penetrating oil.
3. Disconnect the wires from the oxygen sensors.
4. Disconnect the EGR pipe from the rear exhaust manifold and cylinder head.
5. Remove the nuts securing the exhaust pipe to the front and rear exhaust manifolds.
6. Unscrew the bolts of the heat-insulating shields of both collectors.
7. Remove the bolts securing the exhaust manifolds to the cylinder heads and remove the manifolds.
8. Inspect manifolds for cracks or other damage.
Installation
1. Thoroughly clean the mating surfaces of the manifolds and cylinder heads. Check the degree of deformation of the mating surfaces of the collectors. If the deformation exceeds the allowable limits, the manifolds must be machined in a specialized workshop.
2. Install new manifold gaskets.
3. Install the manifolds and tighten the bolts and nuts of the manifolds.
4. Install the remaining parts.