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, (30 N.m).
Scheme 45
Clip cover (1) out of retainers (2).
Scheme 46
Carefully press cover (1) downwards.
Release screws (2) on rubber mount for rear muffler on left and right.
Scheme 47
Release screws (1) on rubber mount for rear muffler on rear axle carrier on left and right.
Note. Rubber mounts are colored differently.
- Red (M62) Or Gray (M54): for rubber mount of rear muffler on rear axle carrier.
Mixing up the rubber mounts will alter the vibration response of the exhaust system.
Scheme 48
Release screws (1) of rear muffler on intermediate muffler and remove both rear mufflers.
Scheme 49
Release screws (1) of rubber mounts for intermediate muffler.
Scheme 50
M54
Release screws (1) on rubber mounts.
Release screws (2) on holder of transmission.
Scheme 51
| CAUTION | Carry out following work step with a second person. |
M54
Release screw connections (1) of catalytic converters at exhaust manifolds on left and right and remove exhaust system completely.
Scheme 52
Installation
Replace self-locking nuts.
Coat threads with CRC copper paste.
18 12 061 Replacing intermediate muffler (M62, M54)
Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .
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, (30 N.m).
Detach both rear mufflers from intermediate muffler.
Scheme 53
Note. For the following instructions, some illustrations of the exhaust system of another BMW car are used.
Measure length (B) of pipe sections on new intermediate muffler.
Scheme 54
Transfer determined distance (B) to new installed intermediate muffler.
Scheme 55
Cut through and deburr both exhaust pipes at determined point between catalytic converter and intermediate muffler with special tool 00 2 210.
Scheme 56
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 57
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 58
Connect new intermediate muffler and catalytic converters using clamping sleeves.
Scheme 59
Installation
Nuts point downwards.
Align clamping sleeves so that
- 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)
Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .
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.
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 60
Clip cover (1) out of retainers (2).
Scheme 61
Press cover (1) downwards.
Release screws (2) on rubber mount for rear muffler on left and right.
Scheme 62
Detach rubber mount (1) from holder (2).
Scheme 63
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 64
Release screws (1) of rubber mounts for intermediate muffler.
Detach rubber mount from holder.
Replace rubber mounts on intermediate muffler.
Scheme 65
Release screws (3) on rubber mount.
Detach rubber mount from holder.
Replace rubber mounts on exhaust pipe.
Scheme 66
18 10 031 Replacing rear muffler (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, (30 N.m).
Scheme 67
Clip cover (1) out of retainers (2).
Scheme 68
Press cover (1) downwards.
Release screws (2) on rubber mount for rear muffler.
Scheme 69
Release screws (1) on rubber mount for rear muffler on rear axle carrier.
Note. Rubber mounts are colored differently.
- Red (M62) Or Gray (M54): for rubber mount of rear muffler on rear axle carrier.
- Black: for rubber mount of rear muffler on rear bumper.
Scheme 70
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 rear muffler.
Scheme 71
Push rubber mount for mounting rear muffler onto brackets of new rear muffler.
Note. For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .
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, (30 N.m).
Detach both rear mufflers from intermediate muffler.
Scheme 72
Note. For the following instructions, some illustrations of the exhaust system of another BMW car are used.
Measure length (B) of pipe sections on new intermediate muffler.
Scheme 73
Transfer determined distance (B) to new installed intermediate muffler.
Scheme 74
Cut through and deburr both exhaust pipes at determined point between catalytic converter and intermediate muffler with special tool 00 2 210.
Scheme 75
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 76
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 77
Connect new intermediate muffler and catalytic converters using clamping sleeves.
Scheme 78
Installation
Nuts point downwards.
Align clamping sleeves so that
- Separation point is in middle of clamping sleeve, and
- There is sufficient spacing to adjoining components.
Operation is identical to 18 21 051 REPLACING ALL EXHAUST SUSPENSIONS (M62, M54) .