18 00 020 Removing and installing complete exhaust system (M62, M54)
| WARNING | Scalding hazard! Only perform these tasks after exhaust system has cooled down. |
Slacken screws (1) of rear muffler on intermediate muffler.
Installation
Tightening torque, see 18 00 6AZ in EXHAUST SYSTEM - TIGHTENING TORQUES .
Scheme 1
Clip cover (1) out of retainers (2).
Scheme 2
Carefully press cover (1) downwards.
Release screws (2) on rubber mount for rear muffler on left and right.
Scheme 3
Release screws (1) on rubber mount for rear muffler on rear axle carrier on left and right.
Note. Rubber mounts are colored differently.
Scheme 4
- Red (M62) or gray (M54): for rubber mount of rear muffler on rear axle carrier
- Black: for all other rubber mounts
Mixing up the rubber mounts will alter the vibration response of the exhaust system.
Release screws (1) of rear muffler on intermediate muffler and remove both rear mufflers.
Scheme 5
Release screws (1) of rubber mounts for intermediate muffler.
Scheme 6
M62
Release plug connection (1) of monitor sensor on left and right.
Clip cable of monitor sensor on left and right out of brackets.
Release screws (3) of rubber mounts on left and right.
Scheme 7
Release plug connection (1) of oxygen sensor on left and right.
Scheme 8
M54
Release screws (1) on rubber mounts.
Release screws (2) on holder of transmission.
Scheme 9
| CAUTION | Carry out following work step with a second person. |
M62
Release screw connections of catalytic converters at exhaust manifolds on left and right and remove exhaust system completely.
Installation
Replace self-locking nuts.
Coat threads with CRC copper paste.
Scheme 10
M54
Release screw connections (1) of catalytic converters at exhaust manifolds on left and right and remove exhaust system completely.
Installation
Replace self-locking nuts.
Coat threads with CRC copper paste.
Scheme 11
18 12 061 Replacing intermediate muffler (M62, M54)
Special Tools Required
- 00 2 210
Removal & Installation
| WARNING | Scalding hazard! Only perform these tasks after exhaust system has cooled down. |
Release screws (1) of rear muffler on intermediate muffler.
Installation
Tightening torque, see 18 00 6AZ in EXHAUST SYSTEM - TIGHTENING TORQUES .
Detach both rear mufflers from intermediate muffler.
Scheme 12
Note. For the following work steps, some illustrations of the exhaust system are from other BMW models.
Measure length (B) of pipe sections on new intermediate muffler.
Scheme 13
Transfer determined distance (B) to new installed intermediate muffler.
Scheme 14
Cut through and deburr both exhaust pipes at determined point between catalytic converter and intermediate muffler with special tool 00 2 210.
Scheme 15
Release screws (1) on rubber mounts and remove intermediate muffler.
Detach rubber mounts from old intermediate muffler and push onto bracket of new intermediate muffler.
Scheme 16
The apertures on the new intermediate muffler are sealed with adhesive film.
Completely remove adhesive film from new intermediate muffler.
Make sure there are no foreign bodies in intermediate muffler.
Scheme 17
Connect new intermediate muffler and catalytic converters using clamping sleeves.
Installation
Nuts point downwards.
Align clamping sleeves so that
Scheme 18
- separation point is in middle of clamping sleeve, and
- there is sufficient spacing to adjoining components.
18 21 051 Replacing all exhaust suspensions (M62, M54)
Special Tools Required
- 31 2 220
| WARNING | Scalding hazard! Only perform these tasks after exhaust system has cooled down. |
Note. Rubber mounts are colored differently.
- Red (M62) or gray (M54): for rubber mount of rear muffler on rear axle carrier
- Black: all other rubber mounts
Mixing up the rubber mounts will alter the vibration response of the exhaust system.
Support exhaust system at intermediate muffler with special tool 31 2 220.
Scheme 19
Clip cover (1) out of retainers (2).
Scheme 20
Press cover (1) downwards.
Release screws (2) on rubber mount for rear muffler on left and right.
Scheme 21
Detach rubber mount (1) from holder (2).
Scheme 22
Release screws (1) on rubber mount for rear muffler on rear axle carrier on left and right.
Detach rubber mount from holder.
Replace rubber mounts on rear muffler.
Note. Rubber mount for rear muffler on rear axle carrier is red.
Mixing up the rubber mounts will alter the vibration response of the exhaust system.
Scheme 23
Release screws (1) of rubber mounts for intermediate muffler.
Detach rubber mount from holder.
Replace rubber mounts on intermediate muffler.
Scheme 24
Release screws (3) on rubber mount.
Detach rubber mount from holder.
Replace rubber mounts on exhaust pipe.
Scheme 25
Special Tools Required
- 00 2 210
| WARNING | Scalding hazard! Only perform these tasks after exhaust system has cooled down. |
Release screws (1) of rear muffler on intermediate muffler.
Installation
Tightening torque, see 18 00 6AZ in EXHAUST SYSTEM - TIGHTENING TORQUES .
Detach both rear mufflers from intermediate muffler.
Scheme 26
Note. For the following work steps, some illustrations of the exhaust system of another BMW car are used.
Measure length (B) of pipe sections on new intermediate muffler.
Scheme 27
Transfer determined distance (B) to new installed intermediate muffler.
Scheme 28
Cut through and deburr both exhaust pipes at determined point between catalytic converter and intermediate muffler with special tool 00 2 210.
Scheme 29
Release screws (1) on rubber mounts and remove intermediate muffler.
Detach rubber mounts from old intermediate muffler and push onto bracket of new intermediate muffler.
Scheme 30
The apertures on the new intermediate muffler are sealed with adhesive film.
Completely remove adhesive film from new intermediate muffler.
Make sure there are no foreign bodies in intermediate muffler.
Scheme 31
Connect new intermediate muffler and catalytic converters using clamping sleeves.
Installation
Nuts point downwards.
Align clamping sleeves so that
Scheme 32
- separation point is in middle of clamping sleeve, and
- there is sufficient spacing to adjoining components.
Special Tools Required
- 31 2 220
| WARNING | Scalding hazard! Only perform these tasks after exhaust system has cooled down. |
Note. Rubber mounts are colored differently.
- Red (M62) or gray (M54): for rubber mount of rear muffler on rear axle carrier
- Black: all other rubber mounts
Mixing up the rubber mounts will alter the vibration response of the exhaust system.
Support exhaust system at intermediate muffler with special tool 31 2 220.
Scheme 33
Clip cover (1) out of retainers (2).
Scheme 34
Press cover (1) downwards.
Release screws (2) on rubber mount for rear muffler on left and right.
Scheme 35
Detach rubber mount (1) from holder (2).
Scheme 36
Release screws (1) on rubber mount for rear muffler on rear axle carrier on left and right.
Detach rubber mount from holder.
Replace rubber mounts on rear muffler.
Note. Rubber mount for rear muffler on rear axle carrier is red.
Mixing up the rubber mounts will alter the vibration response of the exhaust system.
Scheme 37
Release screws (1) of rubber mounts for intermediate muffler.
Detach rubber mount from holder.
Replace rubber mounts on intermediate muffler.
Scheme 38
Release screws (3) on rubber mount.
Detach rubber mount from holder.
Replace rubber mounts on exhaust pipe.
Scheme 39
18 32 510 Removing and installing/replacing left or right catalytic converter (M62)
Remove and install complete exhaust system, refer to 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (M62, M54) .
| WARNING | Scalding hazard! Only perform these tasks after exhaust system has cooled down. |
Measure length (D) of pipe section on new catalytic converter.
Transfer determined length (D) to removed catalytic converter.
Scheme 40
Cut through and deburr exhaust pipe at determined point between catalytic converter and center muffler with special tool 00 2 210.
Scheme 41
The apertures on the new catalytic converter are sealed with adhesive film.
Completely remove adhesive film from new catalytic converter.
Make sure there are no foreign bodies in catalytic converter.
Scheme 42
Connect new catalytic converter and center muffler using clamping sleeves.
Installation
Nuts point downwards.
Align clamping sleeves so that
Scheme 43
- separation point is in middle of clamping sleeve, and
- there is sufficient spacing to adjoining components.
Note. Do not clean oxygen and monitor sensors and do not bring into contact with lubricant. Protect oxygen and monitor sensors when applying underbody protection.
Unscrew oxygen and monitor sensor from old catalytic converter. If necessary, replace oxygen and monitor sensor.
Tightening torque, see 11 78 1AZ in ENGINE - TIGHTENING TORQUES .
Coat thread with grease for oxygen sensor.
Screw oxygen and monitor sensor onto new catalytic converter.
