11 65 022 Removing and Installing/Replace Exhaust Turbocharger For Cylinders 1-3
11 65 022 Removing and installing/replace exhaust turbocharger for cylinders 1-3 (N54, N54T)
Important!
It is not necessary to carry out a chassis/wheel alignment check to release the steering tie rod.
Necessary preliminary tasks:
^ Remove both catalytic converters
^ Release right track rod from steering gear
^ Drain coolant
^ Remove coolant expansion tank
^ Remove coolant thermostat
^ Remove coolant pump
^ Remove both vacuum accumulators with bracket
^ Remove right charge-air duct
^ Drain engine oil and collect in a clean container, oil is reused
Release screws (1) and remove protective plate (2) above tie rod.
Release screws (1).
Tightening torque 11 42 7AZ.
Installation note:
Replace gasket.
Release screw (2).
Tightening torque 11 42 8AZ.
Remove oil return pipe in direction of arrow.
Installation note:
Replace O-ring.
Undo screws (1 and 2)
Tightening torque 11 53 10AZ.
Release coolant feed lines (3 and 4) if necessary with suitable pliers.
Important!
Do not place pliers on pipes. Risk of damage!
Release screws (1).
Tightening torque 11 53 3AZ.
Remove feed line (2).
Installation note:
Replace O-ring.
Release screw (1).
Tightening torque 11 53 8AZ.
Release coolant return pipe at connection (2) if necessary with suitable pliers.
Release screw (3).
Tightening torque 11 53 9AZ.
Release coolant return pipe at connection (4) if necessary with suitable pliers.
Unfasten coolant return pipe.
Important!
Do not place pliers on pipes. Risk of damage!
Release screws (1).
Tightening torque 11 65 2AZ.
Remove retaining plate (2).
Release screws (3).
Tightening torque 11 65 2AZ.
Remove heat shield (1) in direction of arrow.
Note:
Carefully swing out heat shield (1) in direction of arrow.
Risk of damage!
Coolant feed pipe can be removed with heat shield (1).
Release screws (1).
Tightening torque 11 65 3AZ.
Set holder (2) down on cylinder head cover.
Release screw (1).
Tightening torque 11 42 4AZ.
Detach oil feed line in direction of arrow.
Installation note:
Replace O-ring.
Release screw (1).
Tightening torque 11 42 5AZ.
Release oil pressure line (2) if necessary with suitable pliers.
Important!
Do not place pliers on pipes. Risk of damage!
Installation note:
Replace O-rings.
Detach vacuum hose from vacuum unit (wastegate valve).
Unscrew nuts (1).
Tightening torque 11 65 1AZ.
Remove turbocharger towards top.
Important!
Do not misuse linkage of vacuum unit (wastegate valve) for transportation.
Risk of damage!
Release screw (2).
Tightening torque 11 42 5AZ.
Important!
Where necessary, to release the oil feed line (3), do not place pliers on the pipe.
Risk of damage!
If necessary, release oil feed line (3) with suitable pliers at connection and remove.
Installation note:
Replace O-rings.
Installation note:
Replace graphite sealing rings (1).
Note:
Picture shows turbocharger for cylinders 4 to 6.
Assemble engine.
Delete fault memory in Digital Engine Electronics.
Check air intake system for leaks.
Observe DME instructions.
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