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Home >> Mercedes Benz >> 2013 >> S400 >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System - 221 Chassis >> Testing & Repair >> Remove/install fan unit - AR20.40-P-5050MM

Remove/install fan unit - AR20.40-P-5050MM

ENGINES 157, 278 in MODEL 216 

ENGINES 157, 276, 278 in MODEL 221 

Fig 1: Identifying Fan Unit Remove/Install Components
G10108746Courtesy of MERCEDES-BENZ USA

Shown on engine 157 

MODIFICATION NOTES

1.9.10 Unclip oil line for P/S on fan unit - added    
REMOVINGINSTALLING Remove/install     
DANGER Risk of injury  caused by fingers being pinched or crushed  when removing, installing or aligning hoods, doors, trunk lids, liftgates or sliding roof Keep body parts and limbs well clear of moving parts. AS00.00-Z-0011-01A
1 Switch off ignition    
2 Open engine hood    
3 Remove engine air intake duct (3) upstream of air filter    
4 Remove upper radiator crossmember (1) See "Completely replace front end with reinforcement". AR62.30-P-1570SX
5 Unclip coolant hose from fan unit (2)    
6 Separate electrical connector for electrical suction fan    
7 Unclip feed line for electrical radiator fan from fan unit (2) and set aside    
8 Unclip oil line for P/S to fan unit (2) Engine 276  
9 Remove clamps on the left and right on fan unit (2)    
10 Remove fan unit (2) in the upward direction INSTALLATION IMPORTANT Ensure that fan unit (2) is seated correctly in radiator at side and bottom.  
11 Install in the reverse order