Contents: Petrol models ↡ Diesel models ↡
Petrol models
Assembly of the impeller with a viscous clutch
Installation details of the fan impeller with a viscous clutch on gasoline models
1 - Holder; 2 - Drive belt pulley; 3 - Assembly of the impeller with a viscous coupling; 4 - Torque wrench; 5 - Horn attachment
Fan shroud
Fan assembly casing installation details for petrol and diesel models with M612 engine
1 - Assembly of the impeller with a viscous coupling
2 - Fixators
3 — Fan assembly casing
Diesel models
M612
Assembly of the impeller with a viscous clutch
Installation details of the fan impeller with a viscous clutch on diesel models with an M612 engine
1, 2 - Cylinder head cover trim panels; 3 - Cooling tract overflow lines; 4 - Air intake; 5 - Upper front cross beam; 6 - Spring clamps; 7 - Viscous fan clutch; 8 - Impeller; 9 - Screwdriver; 10 - Torque wrench; 11 - Central screw; 12 - Fan assembly casing
1. Remove the cylinder head cover trim panels (1 and 2).
2. Jack up the car and place it on supports.
3. Remove the crankcase guard.
4. Drain the cooling system (see Chapter Routine care and maintenance).
5. Remove the overflow lines (3).
6. Remove the air intake hose (4) of the air cleaner installed on the wing splash guard.
7. Remove the decorative radiator grille (see Chapter Body).
8. Remove the upper front cross member (5) and move it to the side together with the bonnet lock.
9. Release the spring clips (6) securing the fan assembly shroud.
10. Place the holder on the fan drive pulley bolts - make sure the holder is seated correctly (see illustration Details of the installation of the fan impeller with a viscous clutch on gasoline models).
11. Using a screwdriver (9) and a torque wrench (10), loosen the right-hand threaded center bolt (11), then remove the fan assembly (complete with casing) from the engine compartment.
12. Unbolt the impeller (8) from the coupling (7).
13. Installation is carried out in the reverse order. The impeller (8) must be installed with the "FRONT" marking forward in the direction of movement - there is a guide lug on the mounting ring. Also make sure that the fastening tabs (arrows) of the casing fall into the support units of the assembly and from below on the radiator.
14. Finally, check the cooling system for signs of developing leaks.
Fan shroud
The fan shroud installation details on diesel models with the 612 series engine are shown in the illustration Fan Assembly Shroud Installation Details on Gasoline and Diesel Models with the M612 Engine.
M628
Fan assembly installation details on diesel models with M628 engine
1 - Ventilation line; 2 - Decorative grille; 3 - Mounting bolts; 4, 11, 12 - Fasteners; 5 - Bolts; 6 - Upper front cross beam; 7 - Electrical wiring connector; 8 - Fan assembly casing; 9 - Bolt; 10 - Fixators
1. Remove the air cleaner (see Chapter Fuel and exhaust systems).
2. Separate the ventilation line (1) from the radiator and move it aside, prepare a replacement bandage.
(Read more on the website: «mercedesman.ru»)
3. Remove the decorative grille (2) (see Chapter Body).
4. Unscrew the bolts (5) and remove the upper front cross member (6), - do not forget to release the hood latch release cable from the clamps.
5. Disconnect the electrical wiring connector (7) on the fan assembly shroud (8).
6. Jack up the car and place it on supports.
7. Remove the crankcase guard.
8. Unscrew the fastening bolt (9), release the clamps (1) and release the fan assembly shroud (8) from the guides on the radiator and the latter's support brackets.
9. Installation is carried out in reverse order.
10. Finally, check the cooling system for signs of developing leaks.