11 65 580 Replacing Vacuum Unit (Wastegate Valve) (N54): Notes
IMPORTANT:
Overpressure and vacuum lines are identified by the size of the seals and color-coded Red and Blue and must not be mixed up with each other.
Build up pressure with Blue color.
Generate vacuum pressure with Red color.
Check ease of movement between turnbuckle and pin of adjusting lever (ensure rectangularity).
Build up pressure with Blue color.
Generate vacuum pressure with Red color.
Check ease of movement between turnbuckle and pin of adjusting lever (ensure rectangularity).
Note on ordering:
- Workshop equipment
- Workshop planning
- Workshop equipment catalogue
- Measuring and test equipment
- No. 81 29 0 426 464
Necessary preliminary tasks:
- Prepare BMW diagnosis system
- Start diagnosis program
Perception:
- Noises at turbocharger (clanking)
or Fault memory entry:
- Drive
- Engine electronics
- Air supply
- Boost pressure control
- Remove both exhaust turbochargers. See TURBOCHARGER FOR CYLINDERS 1-3 and TURBOCHARGER FOR CYLINDERS 4-6 .
Release locking clip (2).
Disengage linkage of vacuum unit (wastegate valve).