18 00 018 Removing and installing complete exhaust system (S65)
Necessary preliminary tasks
- E93 only: Remove tension strut
Support exhaust system with special tools 31 2 220 SUPPORT and 00 2 030 DEVICE .
Disconnect all oxygen sensors.
The description refers only to one side of the two-flow exhaust system. The procedure is identical for both sides.
Scheme 13
Unscrew nuts.
Replace self-locking nuts.
Tightening torque 18 40 2AZ .
Scheme 14
Release screws.
Tightening torque 18 40 3AZ .
Scheme 15
Release screws (1).
Remove reinforcement plate.
Installation
Tightening torque 51 61 7AZ .
Scheme 16
Release nuts.
Tightening torque 18 40 4AZ .
Scheme 17
Unscrew nuts.
Tightening torque 18 40 5AZ .
Remove grounding strap.
Scheme 18
Release screws (1) on rear apron.
Unscrew nuts (2).
Tightening torque 18 40 5AZ .
Lower exhaust system and remove with assistance of a second person.
Scheme 19
Installation
Add final details to vehicle.
Check exhaust system for leaks.
| WARNING | Danger of burning and other injuries! Only perform this work after engine has cooled down. Removal of the exhaust system must be carried out with the assistance of a second person. |
Note. Weight of exhaust system is approx. 40 kg.
18 32 040 Removing and installing/replacing catalytic exhaust-gas converter with center muffler (S65)
| WARNING | Scalding hazard! Only perform these tasks after exhaust system has cooled down. |
Support rear silencer with special tool 31 2 220 SUPPORT .
Note. Description of one side of two-flow exhaust system. The procedure is identical on both sides.
Release screws.
Tightening torque 18 40 2AZ .
Release screws.
Tightening torque 18 40 3AZ .
Release screws (1).
Remove reinforcement plate.
Installation
Tightening torque 51 61 7AZ .
Release screws on clamps.
Tightening torque 18 40 6AZ .
Remove catalytic exhaust-gas converter with center muffler.
Remove catalytic exhaust-gas converter with a second person helping.
Scheme 20
Note. Add final details to vehicle. Check exhaust system for leaks.
18 12 030 Removing and installing/replacing rear muffler (S65)
| WARNING | Scalding hazard! Only perform these tasks after exhaust system has cooled down. |
Support rear silencer with special tool 31 2 220 SUPPORT .
Note. Description of one side of two-flow exhaust system.
The procedure is identical on both sides.
Release screws on clamps.
Tightening torque 18 40 6AZ .
Unfasten nut.
Tightening torque 18 40 4AZ .
Unscrew nuts.
Remove grounding straps.
Tightening torque 18 40 5AZ .
Release screws (1) on rear apron.
Unscrew nuts (2).
Tightening torque 18 40 5AZ .
Remove rear muffler with a second person helping.
Note. Add final details to vehicle. Check exhaust system for leaks.
| WARNING | Scalding hazard! Only perform these tasks after exhaust system has cooled down. |
Support rear silencer with special tool 31 2 220 SUPPORT .
Note. Description of one side of two-flow exhaust system. The procedure is identical on both sides.
Release screws.
Tightening torque 18 40 2AZ .
Release screws.
Tightening torque 18 40 3AZ .
Release screws (1).
Remove reinforcement plate.
Installation
Tightening torque 51 61 7AZ .
Release screws on clamps.
Tightening torque 18 40 6AZ .
Remove catalytic exhaust-gas converter with center muffler.
Remove catalytic exhaust-gas converter with a second person helping.
Note. Add final details to vehicle. Check exhaust system for leaks.
| WARNING | Scalding hazard! Only perform these tasks after exhaust system has cooled down. |
Support rear silencer with special tool 31 2 220 SUPPORT .
Note. Description of one side of two-flow exhaust system.
The procedure is identical on both sides.
Release screws on clamps.
Tightening torque 18 40 6AZ .
Unfasten nut.
Tightening torque 18 40 4AZ .
Unscrew nuts.
Remove grounding straps.
Tightening torque 18 40 5AZ .
Release screws (1) on rear apron.
Unscrew nuts (2).
Tightening torque 18 40 5AZ .
Remove rear muffler with a second person helping.
Note. Add final details to vehicle. Check exhaust system for leaks.
| WARNING | Scalding hazard! Only perform these tasks after exhaust system has cooled down. |
Support rear silencer with special tool 31 2 220 SUPPORT .
Note. Description of one side of two-flow exhaust system. The procedure is identical on both sides.
Release screws.
Tightening torque 18 40 2AZ .
Release screws.
Tightening torque 18 40 3AZ .
Release screws (1).
Remove reinforcement plate.
Installation
Tightening torque 51 61 7AZ .
Release screws on clamps.
Tightening torque 18 40 6AZ .
Remove catalytic exhaust-gas converter with center muffler.
Remove catalytic exhaust-gas converter with a second person helping.
Note. Add final details to vehicle. Check exhaust system for leaks.
18 40010 Removing and installing/replacing left exhaust manifold (S65)
| WARNING | Scalding hazard! Only perform these tasks on an engine that has cooled down. |
Necessary preliminary tasks
- Remove «ALTERNATOR (S65)»(/bmw/m3/e90-2007-2013/remont/gauges-instrument-panels/#engine-electrical-system-repair-e90) .
- Remove «COMPLETE EXHAUST SYSTEM»(/bmw/m3/e90-2007-2013/remont/exhaust/#exhaust-system-repair-e90__18-00-018-removing-and-installing)
- Secure «ENGINE IN INSTALLATION POSITION (S65)»(/bmw/m3/e90-2007-2013/remont/mechanical/#engine-repair-e90__11-00-670-securing-engine-in)
- Lower «FRONT AXLE CARRIER»(/bmw/m3/e90-2007-2013/remont/axle-shafts/#front-axle-repair-e90__31-11-506-loweringraising-front-axle)
Note. For purposes of clarity, the following work steps are shown on the engine after it has been removed.
Release screws.
Remove 5 heat shield bolts.
Release 2 nuts of individual flange pairs. Remove exhaust manifold. Installation: Replace nuts. Tightens nuts on each flange. Tightening torque, see 18 40 1AZ in EXHAUST MANIFOLD, EXHAUST SYSTEM . Replace seals.
18 40 020 Removing and installing/replacing right exhaust manifold (S65)
| WARNING | Scalding hazard! Only perform these tasks on an engine that has cooled down. |
Necessary preliminary tasks
- Remove «COMPLETE EXHAUST SYSTEM»(/bmw/m3/e90-2007-2013/remont/exhaust/#exhaust-system-repair-e90__18-00-018-removing-and-installing)
- Secure «ENGINE IN INSTALLATION POSITION WITH SPECIAL TOOL»(/bmw/m3/e90-2007-2013/remont/mechanical/#engine-repair-e90__11-00-670-securing-engine-in)
- Lower «FRONT AXLE SUPPORT»(/bmw/m3/e90-2007-2013/remont/axle-shafts/#front-axle-repair-e90__31-11-506-loweringraising-front-axle)
- Remove «RIGHT ENGINE SUPPORT ARM»(/bmw/m3/e90-2007-2013/remont/mechanical/#engine-and-gearbox-suspension-repair-e90)
Note. For purposes of clarity, the following work steps are shown on the engine after it has been removed.
Release screws.
Remove heat shield.
Scheme 21
Unscrew nuts.
Remove exhaust manifold (1).
Installation
Replace nuts.
Tightens nuts on each flange.
Replace seals, paying attention to installation location of seals.
Tightening torque 18 40 1AZ .
