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Home >> Mercedes Benz >> 2021 >> G63 AMG >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System - 463 Chassis >> Testing & Repair >> Remove/Install Fan Unit >> Remove/Install Fan Unit - AR20.40-P-5050XGC

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

Engine 177 in model 463 

as of model year 2019 

Fig 1: Fan Unit Components Location - Engine 177 In Model 463 As Of Model Year 2019
G13656847Courtesy of MERCEDES-BENZ USA
G13656848Courtesy of MERCEDES-BENZ USA
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 pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.
AS20.00-Z-0001-01A 
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
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
  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
  Notes on coolant   AH20.00-N-2080-01A 
  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
REMOVINGINSTALLING Remove/install     
1 Switch off ignition and store transmitter key outside of transmitter range (min. 2 m).    
2 Remove upper engine cover   AR01.10-P-2405XGC
3 Remove cold air intake.   AR09.00-P-0002XGC
4 Remove left and right air intake line to left and right air filter housing.    
5 Remove center air duct segment (25).    
6 Release and disconnect electrical connector (2) at fan unit (1).    
7 Remove bleed line (3) at cooler and seal openings with suitable stop plugs.   AR20.20-P-7441-01RQ 
    SPECIAL TOOL Record plug Fig 2
8 Release brackets (9) and detach fan unit (1) from cooler and remove in upward direction.    
9
REFER TO SHOP-MADE TOOLS
Attach protective plate to cooler. In the case of subsequent work in engine compartment. WF58.50-P-0110-01A
10 Install in the reverse order.    
11
REFER TO SELF-DIAGNOSTIC SYSTEMS
Read out and delete fault memory.   AD00.00-P-2000-04B
Fig 2: Identifying Record Plug (129 589 00 91 00)
G13656849Courtesy of MERCEDES-BENZ USA