Installation details of the fan impeller with viscous clutch on models with a gasoline engine of the 111 series (ML 230)
2 - Torque wrench; 3 - Holder (version 1); 3a - Holder (version 2); 5 - Open-end wrench; 33 - Drive belt pulley; 33a - Retainer
Installation details of the fan impeller with viscous clutch on models with gasoline engines of the 112/113 series
1 - Holder (version 1); 2 - Drive belt pulley; 3 - Assembly of the impeller with a viscous coupling; 4 - Torque wrench; 5 - Open-end wrench
The details of the installation of the fan impeller with a viscous coupling using gasoline models as an example are shown in the illustrations.
Fan shroud
Viscous Clutch Fan Shroud Installation Details (using the ML 230 models as an example)
1 - Assembly of the impeller with a viscous coupling; 7 - Fan assembly casing; 7a - Casing rim; 8 - Cooling tract hose; 15 - Spring clamps; 18 - Cooling system radiator; 110 - Air boost tract sleeve (with appropriate equipment)
The details of the installation of the fan casing with a viscous coupling using the example of gasoline models equipped with a 111 series engine are shown in the illustrations.
Electric fan
M612
Electric Fan Assembly Installation Details on ML 270 CDI Models
1 - Clutch wiring connector; 2 - Wiring of circuit 30; 3 - Fixators; 4 - Locking nuts; 5 - Bolts; M4/7 - Fan drive electric motor
1. The details of the installation of the electric fan assembly using the ML 270 CDI model as an example are shown in the illustration, to which all references in the text refer.
2. Drive the car onto the lift.
3. Open the hood.
4. Disconnect the negative cable from the battery.
5. Disconnect the clutch wiring connector (1).
6. Disconnect the circuit 30 (2) wiring from the fan.
7. Release the electrical wiring from the support bracket.
8. Remove the front sound insulation section.
9. Release the lower fasteners (3) securing the fan assembly.
10. Remove the bolts (5).
11. Remove the lock nuts (4).
12. Remove the fan assembly from the hinge supports at the top edge of the radiator and, lowering it down, remove it from the engine compartment.
13. Installation is carried out in reverse order.
M628
Electric Fan Assembly Installation Details on ML 400 CDI Models
1 - Power supply circuit 30; 2 - Electrical wiring connector; M4/7 - Fan drive electric motor
Electric Fan Assembly Installation Details on ML 400 CDI Models
3 - Lower oil line; 4 - Lower cooling tract hose; 5 - Upper oil line; 6 - Upper cooling tract hose
1. Illustrative material for removing and installing the electric fan assembly on ML 400 CDI models is presented in the illustrations, to which all references in the text refer.
2. Drive the car onto the lift.
3. Open the hood.
4. Disconnect the negative cable from the battery.
5. Disconnect the lower ATF cooling line (3) from the radiator.
6. Release the lower fan assembly fastening fasteners.
7. Remove the lower side fan assembly mounting bolts.
8. Disconnect the electrical wiring connector (2).
9. Release the electrical wiring from the support bracket.
10. Disconnect the upper cooling system hose (6) and the upper oil line (5) from the radiator.
11. Lift the fan assembly upwards and remove it from the engine compartment.
12. Installation is carried out in reverse order.