Exhaust System: Testing and Inspection

Checking Exhaust System For Leaks

Tools

Tools:

Preliminary work
1. Lift the vehicle.

Leak test

ATTENTION: Danger of burns from hot exhaust system.
- Allow components to cool down.
- 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. Remove tailpipes. To do this, loosen the fastening screws and pull the tailpipes out of the rear silencer by swivelling them gently to the side.
2. Insert plugs 9710/3 on both sides of the rear silencer and twist these by folding over the lever.







3. 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.

4. Check exhaust system for leaks and repair if necessary.
5. Remove the plugs and insert the tailpipes into the rear silencer.

Subsequent work
1. Align tailpipes with the bumper and secure them.
2. Lower the vehicle.