18 40 060 Removing and Installing/Replacing Rear Exhaust Manifold (N52K)
WARNING: This page is about a different variant/trim than selected.
Necessary preliminary tasks:
- Remove front underbody protection 51 47 490 REMOVING AND INSTALLING / REPLACING FRONT ASSEMBLY UNDERSIDE PROTECTION
- Remove rear underbody protection 51 47 491 REMOVING AND INSTALLING/REPLACING REAR UNDERBODY PROTECTION
- Remove steering gear cover 51 71 ... REMOVING AND INSTALLING G/REPLACING TOP RIGHT STEERING GEAR COVER at top right
- Remove complete exhaust system. See 18 00 020 Removing and Installing Complete Exhaust System (N52K)
NOTE:
The oxygen sensors are in danger of being damaged when the exhaust manifolds are removed and installed.
Remove control sensor 78 EMISSION CONTROL, OXYGEN from cylinders 4 to 6
Remove monitor sensor from cylinders 4 to 6
Unscrew nuts.
Remove exhaust manifold (1).
Installation:
Clean sealing faces and replace seals.
Replace nuts.
Tightening torque 18 40 1AZ, see 18 40 EXHAUST SYSTEM SUSPENSION .