Withdrawal
1. Apply the handbrake, jack up the front of the vehicle, install safety stands. Remove the lower engine cover.
2. Remove the air filter and air ducts - see chapters 4A or 4B. If necessary, remove the engine top cover.
3. On all engines except AEB and AJL, remove the oxygen sensor from the exhaust manifold as described in chapter 4A.
4. On AEB and AJL engines, loosen the turbine bracket bolts only a few turns. Remove the oil feed tube from the heat shield.
5. Remove the heat shield from the exhaust manifold, if necessary.
6. On all engines except AEB and AJL, unscrew the nuts and disconnect the muffler intake pipe from the exhaust manifold. Remove the gasket and take the pipe away from the manifold.
7. On AEB and AJL engines, unscrew the three bolts securing the turbine to the exhaust manifold, lower the turbine and remove the gasket. Cover the hole in the turbine with a clean cloth to prevent dirt or excess nut from getting inside.
8. Gradually unscrew and remove the nuts with washers, remove the manifold from the head studs. Remove the gasket.
Installation
9. Thoroughly clean the mating surfaces of the head and manifold.
10. Installation - reverse procedure. Install new gaskets, new self-locking nuts and tighten them to the prescribed torque. On AEB and AJL engines, install the exhaust manifold, then the turbocharger on the manifold and fasten the turbocharger to the cylinder block. The tightening torques for threaded connections are given in chapter 4A.
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