11 65 022 Removing and Installing/Replace Exhaust Turbocharger For Cylinders 1-3

11 65 022 - Removing and installing/replacing exhaust-gas turbocharger for cylinders 1-3 (N54)





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 exhaust-gas converters
- Release tie rod 32 21 231 Replacing (Removing and Installing) Left or Right Tie Rod on steering gear
- Remove intercooler Service and Repair
- Draining coolant Service and Repair
- Remove coolant expansion tank Service and Repair
- Remove coolant thermostat Removing and Installing/Replacing Coolant Thermostat
- Remove coolant pump Service and Repair
- Remove both vacuum reservoirs
- Remove right charge-air duct 11 61 362 Replacing Right Charge Air Duct





Release screws (1).
Tightening torque 11 42 7AZ Mechanical Specifications.

Installation Note:
Replace seal.

Release screw (2).

Tightening torque 11 42 8AZ Mechanical Specifications.
Remove oil return pipe in direction of arrow.

Installation Note:
Replace O-ring.





Undo screws (1 and 2)
Tightening torque 11 53 10AZ Mechanical Specifications.
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 Mechanical Specifications.
Remove feed line (2).

Installation Note:
Replace O-ring.





Release screw (1).
Tightening torque 11 53 8AZ Mechanical Specifications.
Release coolant return pipe at connection (2) if necessary with suitable pliers.
Unscrew bolt (3).
Tightening torque 11 53 9AZ Mechanical Specifications.
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 11 65 Turbocharger and Control.
Remove retaining plate (2).
Release screws (3).
Tightening torque 11 65 2AZ 11 65 Turbocharger and Control.





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 11 65 Turbocharger and Control.
Set holder (2) down on cylinder head cover.





Release screw (1).
Tightening torque 11 42 4AZ Mechanical Specifications.
Detach oil feed line in direction of arrow.

Installation Note:
Replace O-ring.





Release screw (1).
Tightening torque 11 42 5AZ Mechanical Specifications.
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 11 65 Turbocharger and Control.
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 Mechanical Specifications.

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.
Clear fault memory in DME control unit.
Check air intake system for leaks.
Observe DME instructions.