Front Section - Single Cam Engines
Disconnect the negative battery terminal, also disconnect the oxygen sensor connector, which is usually tacked to the bracket on one of the upper gearbox engine mounting bolts.
See section "Exhaust systems" in part "A" of this chapter, paying attention to the fact that the front section must be disconnected from the catalytic converter, and not from the front expansion cavity (pic. 4.123, 4.124).
Be aware that some models have a rigid connection instead of a spring connection between the front section and the catalytic converter.
Front Section - Dual Cam Engines
Carrying out work as indicated in the first paragraph of the previous subsection.
Raise the vehicle and secure it on stands under the bridge.
Remove the lower engine mudguard as directed in chapter 11.
Remove the two bolts and disconnect the front exhaust section from the catalytic converter at the flexible connection. Remove the O-ring and springs.
Remove the front exhaust section from the bracket on the cylinder block.
While working in the engine compartment, remove the bolts securing the exhaust manifold heat shield to the cylinder head.
Remove the two lower exhaust manifold mounting nuts that also secure the heat shield brackets and remove the heat shield.
Remove the remaining manifold mounting nuts, then remove the front section/manifold assembly from the vehicle. Remove the manifold gasket.
It is possible to unscrew some of the manifold studs from the cylinder head while loosening the manifold mounting nuts. In this case, the studs must be screwed back in place after the manifold has been removed using the twin nuts.
Installation is carried out in the reverse order of removal, however, a new gasket must be installed, as well as a new o-ring during installation of the flexible connection.
Catalytic converter
The work procedure is the same as indicated for the anterior expansion cavity in the section "Exhaust systems" in part "A" of this chapter. The internal parts of the converter are very fragile - try not to hit them during removal.
Central section
See section "Exhaust systems" in part "A" of this chapter, paying attention to the fact that the front end of the center section must be disconnected from the catalytic converter instead of the front expansion cavity.
Rear section
See section "Exhaust systems" in part "A" of this chapter.
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