11 65 045 Removing and Installing/Replacing Low-Pressure Exhaust Turbocharger
11 65 045 Removing and installing / replacing low-pressure exhaust turbocharger (M57T2-SCR)Special tools required:
Warning!
Risk of burning!
Only perform this repair work on an engine that has cooled down.
Recycling:
Catch escaping engine oil with suitable auxiliary materials.
Observe country-specific waste disposal regulations.
Necessary preliminary work:
^ Remove H.P. turbocharger.
^ Remove diesel particle filter.
^ Remove charge air hose.
Important!
In event of turbocharger damage:
^ Pressure pipes
^ Charge air cooler
^ Intake plenum
- check the above for foreign bodies, damage and correct function, replacing if necessary.
Unfasten screw (1)
Tightening torque 11 65 3AZ.
(E90 only)
Note:
For improved accessibility:
Loosen hose clamp.
Slide gaiter (1) to one side.
Release track rod (2) from rack.
Tightening torque 32 21 1AZ.
Release screws (1) and remove holder (2).
Tightening torque 11 00 4AZ.
Release nut (3) and disengage linkage.
Remove vacuum unit for turbine control flap.
Detach vacuum hose (3) from connecting piece.
Unfasten screws (2).
Tightening torque 11 00 4AZ.
Release hose clamp (1) from oil return line.
Tightening torque 11 42 4AZ.
Loosen hose clamps (1).
Tightening torque 11 42 4AZ.
Release screws (1) with special tool 12 2 100.
Tightening torque 11 65 2AZ.
Remove L.P. turbocharger downwards.
Installation Note:
Clean sealing surfaces and replace gasket.
To avoid damaging the threads and prevent turbocharger leaks, insert mounting bolts in 1/2 turns simultaneously.
When replacing low-pressure turbocharger, release screws (1) and modify compressor bypass (2).
Tightening torque 11 00 2AZ.
Replace O-ring.
Important!
Nut (1) must not be released under any circumstances.
Do not use linkage (2) as a carrying handle.
(May result in failure of the turbocharger group).
Important!
Spacer ring (1) must be fitted without fail.
Clean threads (2) with thread cutter.
Adjust turbine control flap.
Assemble engine.
