Radiator installation details for petrol models (using the example of models equipped with a cooling system fan with a viscous clutch)
1 - Assembly of the cooling system fan with viscous coupling; 2 - Fan assembly shroud fasteners; 3 - Fan assembly casing; 4 - Cooling tract line; 5 - Cooling system expansion tank tube; 6 - Cooling tract line; 7 - Headlights; 8 - Front cross member of the frame; 9 - Rubber seal; 10 - ATF Cooling Lines (models with AT); 11 - Fan grille; 12 - Guide deflectors; 13 - Deflector mounting clamps; 14 - Receiver-dryer K/V; 15 - Cooling system radiator; 16 - Overlays; 17 - Air deflector (except for ML 230 models); 18 - Return oil line of the power steering cooling system; 19 - Power steering cooling system oil supply line; 20 - Fasteners; 21 - Rubber damper
1. Details of radiator installation on petrol models are shown in the illustration, to which all references in the text refer.
2. Drain the cooling system (see Chapter Checking the cooling system and frost resistance of the coolant, replacing the liquid).
3. Remove the fan assembly.
4. Remove the trim elements (16) and headlight assemblies (7).
5. Unbolt the front frame cross member (8).
6. Disconnect the cooling system lines (4 and 6) and the expansion tank overflow tube (5) from the radiator (15).
7. Disconnect the oil lines (18 and 19).
8. On models with AT, unbolt the ATF line (10) from the radiator.
9. Release the electrical wiring from the clips and remove the fan assembly grille (11).
10. Unbolt the A/C condenser from the radiator and, without disconnecting the refrigeration lines, move it to the side.
11. Remove the fasteners (20) and remove the rubber damper (21).
12. Remove the air conditioning system receiver-dryer (14) from the radiator.
13. Remove the radiator (15).
14. Disconnect the guide deflectors (12).
15. Installation is carried out in reverse order.
16. Finally, do not forget to check the cooling system for signs of developing leaks and adjust the direction of the optical axes of the headlights.
Diesel models
Models with manual transmission
Radiator installation details for diesel models with manual transmission
1 - Electric cooling fan; 2 - Low pressure cooler; 3 - Mounting bolts; 4 - Headlights; 5 - Overlays; 6 - Front frame beam; 110/2 - Charge air tract cooler
Radiator installation details for diesel models with manual transmission
8 - Cooling tract hose going to the water pump; 9 - Cooling tract hose going to thermostat; 10 - Overflow hose going to the expansion tank of the cooling system; 11 - Rubber seal; 12 - Guide deflectors; 13 - Fixators; 14 - Receiver-dryer K/V; 15 - Cooling system radiator; 16 - Bolts; 17 - Capacitor; 18 - Return oil line of the power steering cooling system; 19 - Power steering cooling system oil supply line; 20 - Fasteners; 21 - Rubber dampers
1. Details of radiator installation on diesel models with manual transmission are shown in the illustrations, to which all references in the text refer.
2. Open the hood and fix it in a vertical position.
3. Disconnect the negative cable from the battery.
4. Remove the cylinder head cover trim panel.
5. Remove the lower section of sound insulation.
6. Lower and remove the cooling system fan assembly.
7. Drain the cooling system (see Chapter Checking the cooling system and frost resistance of the coolant, replacing the liquid).
8. Remove the charge air cooler (110/2).
9. Install the radiator/condenser protection screen.
10. Remove the rubber seal (11).
11. Pump out the hydraulic fluid from the power steering reservoir.
12. Disconnect the power steering cooling oil lines (18 and 19).
13. Disconnect the water pump hose (8).
14. Disconnect the cooling system hose (9) from the thermostat.
15. Disconnect the expansion tank overflow hose (10) from the radiator.
16. Remove the guide deflectors (12).
17. Unscrew the mounting bolts (16) and remove the A/C condenser (17) and, without disconnecting the refrigeration lines, move it to the side.
18. Remove the fasteners (2) and dismantle the rubber dampers (21).
19. Remove the receiver-dryer K/V (14) from the radiator.
20. From the left side of the radiator, remove the support bracket for the air boost tract hose.
21. Remove the radiator (15).
22. Installation is carried out in reverse order.
23. Finally, check the cooling system for signs of developing leaks.
Models with AT
Details of radiator installation on diesel models with AT (using the example of a model with a 628 series engine)
10 — Fixators
1. Details of radiator installation on diesel models with automatic transmission are shown in the illustration, to which all references in the text refer.
(Material borrowed from an online resource: MercedesMan)
2. Open the hood.
3. Pump out the power steering hydraulic fluid.
4. Remove the headlights (see Chapter On-board electrical equipment).
5. Remove the frame cross member.
6. Remove the fan assembly (see Section Removal and installation the cooling system fan assembly).
7. Remove the lower section of sound insulation.
8. Drain the cooling system (see Chapter Checking the cooling system and frost resistance of the coolant, replacing the liquid).
9. Disconnect the air hose (14) from the charge air cooler (13).
10. Remove the cooler (14).
11. Remove the deflector panels (9 and 11).
12. Disconnect the ATF cooling system oil lines (2 and 3) from the radiator (1).
13. Disconnect the power steering cooling oil lines (7 and 8) from the radiator (1).
14. Disconnect the cooling (4 and 6) and ventilation (5) lines from the radiator (1).
15. Release the clamps (16) of the rubber dampers (17) from the rear side of the radiator and remove the fastener (15).
16. Remove the condenser (12) from the radiator (1) and, without disconnecting the refrigeration lines, move it to the side.
17. Release the radiator (1) from the rubber supports of the cross member and remove it from the engine compartment.
18. Remove the rubber dampers (17).
19. Installation is carried out in reverse order.
20. Finally, check the cooling system for signs of developing leaks.