Installing Primary Catalytic Converter On Cylinder Bank 1-4

WARNING: This page is about a different car, the 2010 Porsche Cayenne, 2009 Porsche Cayenne, and 2008 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

Ensure sealing faces of exhaust system are clean.
Replace flange gasket -4- and slide it over the studs on the exhaust manifold -5- .

Fig 1: Identifying Ceramic Monolith And Flange Gasket
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
- 1 - Primary catalytic converter
- 2 - Ceramic monolith
- 3 - Exhaust manifold
- 4 - Seal
- 5 - Studs in exhaust manifold
NOTE:
Projecting ceramic catalytic converter
- Risk of damage to ceramic catalytic converter
→ Ensure that your work area is well illuminated.

→ Carefully guide the projecting ceramic catalytic converter past the studs on the exhaust manifold.

→ Cover and store the ceramic monolith for the primary catalytic converter in a safe place until you are ready to install it.

→ Protect the ceramic monolith from damage while you are working on the primary catalytic converter. If there are deep cracks or large chips, replace the primary catalytic converter. Slight superficial damage will not impair its function.
Carefully move primary catalytic converter into installation position.
Fit new fastening nuts between the exhaust manifold and primary catalytic converter, but leave them loose.
Make sure that the sheetmetal holder for the primary catalytic converter fits correctly on the exhaust manifold after you tighten the nuts -8- .

Fig 2: Identifying Holder For Catalytic Converter - Naturally Aspirated Engine
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
- 1 - Exhaust manifold, right
- 2 - Exhaust manifold, left
- 3 - Seal
- 4 - Nut
- 5 - Primary catalytic converter, left
- 6 - Holder, left
- 7 - Bolt
- 8 - Holder, right
- 9 - Primary catalytic converter, right
- 10 - Bolts between transmission and engine (holder)
Fit fastening screw on catalytic converter holder and nuts to the specified tightening torque and according to the specified tightening sequence. Flange bolts securing primary catalytic converter to exhaust manifold. → WM 373527 REMOVING AND MOUNTING TRANSMISSION (EXCEPT CAYENNE TIP, CAYENNE S TIP, CAYENNE TURBO, CAYENNE GTS TIP, CAYENNE TURBO S)Tightening torque: 23 Nm (17 ft lbs.)
1 bis 5 - Tightening sequence for nuts

Fig 3: Identifying Ceramic Monolith And Flange Gasket
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
WARNING:
Cables not fitted or removed correctly
- Risk of burns
- Risk of short circuit or fire.
→ Check for correct fitting.

→ Replace damaged components.
WARNING:
Cables not fitted or removed correctly
- Risk of burns
- Risk of short circuit or fire.
→ Check for correct fitting.

→ Replace damaged components.
Lay oxygen sensor cable and clip it in. -1-

Fig 4: Identifying Catalytic Converter Tightening Sequence (Naturally Aspirated Engine)
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Plug in the connector for the oxygen sensor behind the catalytic converter at the water splash panel.