Exhaust System: Testing and Inspection

Checking Exhaust System For Leaks

Special tools










Leak test

CAUTION:
Danger of burns.
- Components of the exhaust system can be extremely hot.
- Allow the parts to cool down first and wear protective gloves.

NOTE:
- After the connecting clamps in the exhaust system have been released, they must always be replaced.
- During assembly work on the exhaust system, ensure that the components are aligned and installed correctly.
- Seals must be replaced by new ones following removal.
- Observe the correct tightening sequence and tightening torques.
- The general warning notes must be observed.

1. Raise the vehicle using a lifting platform.
2. Remove tailpipes. To do this, loosen the fastening screws and pull the tailpipes out of the rear muffler by swivelling them gently from side to side.







3. Insert plugs 9710/3 on both sides of the rear muffler and twist these by folding over the lever.
4. Remove the protective cap of the test valve on one side and apply excess pressure of approx. 0.3 bar using a tyre-inflating device.







NOTE: The exhaust system must be completely sealed between the engine and the catalytic converters.

5. Check exhaust system for leaks and repair if necessary.
6. Remove the plugs and insert the tailpipes into the rear muffler.
7. Align tailpipes with the bumper.
8. In the Cayenne S (M48/00), (dimension -A-) must measure 31±1 mm.







- In the Cayenne Turbo (M48/50) the gap at the top (dimension -A-) must measure 26±1 mm, the gap at the side (dimension -B-) must also measure 32±1 mm.







9. Tighten the screw on the tailpipe clamp to 60 Nm (44 ftlb.).







Tightening torques