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Home >> Mercedes Benz >> 2021 >> C63 AMG 2D Convertible >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System -- 205 Chassis >> Testing & Repair >> Remove/Install Fan Unit - AR20.40-P-5050MNA

Remove/Install Fan Unit - AR20.40-P-5050MNA

Engine 177 in model 205 

MODIFICATION NOTES

27.04.2021 Drain off coolant. Operation step 1.  
Fig 1: Radiator Fan Unit Component Location - Model 205 W/ Engine 177
G14814357Courtesy of MERCEDES-BENZ USA
G14814358Courtesy of MERCEDES-BENZ USA
WARNING Risk of injury  . Skin or eye injuries may result when handling hot or glowing objects. Wear protective gloves, protective clothing and safety glasses, if necessary. AS00.00-Z-0002-01A
WARNING Risk of injury  to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning  from swallowing coolant. Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the overpressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.
AS20.00-Z-0001-01A 
WARNING Risk of injury  due to fan starting unexpectedly Do not reach into the rotation or hazard area of the fan. Wear closed and close-fitting work clothes. AS20.40-Z-0001-01A 
CAUTION Risk of injury  caused by scraping or cutting body parts on sharp vehicle parts Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.
AS00.00-Z-0017-01A
Notice Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
Notice Notes on coolant   AH20.00-P-2080-01KOA 
Notice Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
  Notes on coolant level   AH20.00-P-1142-01CW 
REMOVINGINSTALLING Remove/install     
1 Drain off coolant.   AR20.00-P-1142LW 
    INSTALLATION IMPORTANT Only install lower engine compartment lining after leak test.  
2 Drain coolant from low-temperature circuit.   AR09.41-P-6834MNA
3 Remove reinforcement (6).   AR62.30-P-1570LW
4 Release and disconnect electrical connector a electric plug connection (1).    
5 Remove top coolant line (3) from fan unit (2).    
6 Remove top coolant line (3) from coolant line (4) and seal openings with suitable stop plugs. SPECIAL TOOL Record plug Fig 3
    SPECIAL TOOL Hose clamp pliers Fig 2
7 Remove air duct segment (7).    
8 Remove oil cooler for automatic transmission at fan unit (2) and place to one side with connected oil lines. Engine 177 in model 205 with transmission 722.9 AR27.55-P-1000LW
9 Remove bottom coolant line from fan unit (2).    
10 Remove bleed line (5) from cooler and seal openings with suitable stop plugs.   AR20.20-P-7441-01RQ 
    SPECIAL TOOL Record plug Fig 3
11 Unhook fan unit (2) from the radiator frame and remove upward.    
12 Install in the reverse order.    
WARNING Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running. Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. AS00.00-Z-0005-01A
13 Perform engine test run; in this connection, check engine cooling system for proper operation and leak tightness.    
14 Install lower engine compartment lining.   AR61.20-P-1105LW
Fig 2: Identifying Hose Clamp Pliers (003 589 03 37 00)
G11065550Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Record Plug (129 589 00 91 00)
G11971934Courtesy of MERCEDES-BENZ USA