Turbocharger 1. Air hose; 2. Pulsation damper; 3. Oil return line; 4/16/25. Bolt: 9 Nm; 5. Gasket: replace; 6. Threaded fitting: 40 Nm; 7. Gasket: replace; 8. Bolt: 20 Nm; 9. Turbocharger: replaced only together with the vacuum drive; 10. Gasket: replace; 11. Nut: replace; lubricate the thread with heat-resistant paste; heat-resistant paste; 24 Nm; 12. Particulate filter; 13. Exhaust temperature sensor 1 -G235-; 14. Hollow bolt: 30 Nm; 15. Oil supply line: check patency; Before installing the turbocharger, fill the oil supply line fitting with oil; Tighten the union nuts to a torque of 22 Nm; 17. Seal rings: replace; 18. Exhaust manifold; 19. Nut: replace; lubricate the thread with heat-resistant paste; heat-resistant paste; 24 Nm; 20. Vacuum hose; 21. Crankcase ventilation hose: Equipment version for cold climates: with resistive crankcase ventilation heating element -N79-; 22. Air guide tube; 23. Turbocharger support; 24. Bolt: 40 Nm
Removal
Carefully! If the turbocharger has mechanical damage (for example, damage to the impeller), it is not enough to simply replace the turbocharger. To prevent further damage, the following work must be done. Check the housing and air filter element. filter, as well as air supply hoses for contamination. Check the entire charge air supply system and intercooler for foreign objects. If foreign objects are found in the charge air system, clean the charge air supply lines and, if necessary, replace the intercooler.
Remove engine cover -arrows-. Remove the air housing. filter.
Disconnect the engine crankcase ventilation hose -2- and release it by pressing the release buttons. Remove the air duct hose by loosening the hose clamp -1-.
Remove noise insulation panels -1- and -2-. Remove the exhaust pipe. Remove the right front wheel.
Disconnect connector -4- from exhaust temperature sensor 3 -G495-. -Pos. 1, 2, 3 - ignore.
Unclip and disconnect plug connector -C- of exhaust temperature sensor 4 -G648-H3 of bracket -B-. -Pos. A- and -arrows- are ignored.
Disconnect connector -3 for differential pressure sender -G505-. Unscrew the bolt -2- and release the hoses -1 - from the bracket. Move differential pressure sender -G505- back.
Vehicles with SCR catalytic converter: Disconnect electrical. plug connection -2-. -Pos. 1.3 - do not take into account.
Release exhaust pipe from bracket -2-. -Pos. 1- do not take into account.
All
Remove the cover -1 - of the drive shaft in the right wheel arch.
Loosen the screw connections -arrows-, push the clamping sleeve back and tie the exhaust pipe on top.
Unscrew the bolt -2- of the diesel particulate filter suspension. -Pos. 1- do not take into account.
Remove the air inlet hose and press it to the side; to do this, release the clamp -arrow-.
Unscrew bolts -1- and -2- and remove turbocharger support.
Unscrew the union nut -2-. Remove from the holder and disconnect the electrical connection. Plug connection -3- of exhaust temperature sensor 1 -G235-, release electrical connection. the wire. -Pos. 1- do not take into account.
Remove lambda probe -G39- -item. 1 -.
Unscrew the nuts -arrows- and press the particulate filter back.
Unscrew the union nut -2-. -Pos. 1 - do not take into account.
Disconnect el. plug connection -1-. Remove vacuum hose -2-. Unscrew the nuts -arrows- and remove the blower pipe. Seal open lines and pipes with clean plugs from the engine plug set -VAS 6122-.
Installation
Install in reverse order, note the following. Replace the gasket, nuts and O-ring. Fill the turbocharger with oil through the oil supply pipe. To ensure that oil is supplied to the turbocharger, it is necessary to run the engine for approx. 1 minute at idle speed; do not give the engine high speeds. Install the particulate filter. Install the right front wheel. Install the exhaust pipe. Connect the air hose using threaded clamps.
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