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Home >> Mercedes Benz >> 2020 >> SLC43 AMG Base >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System - 172 Chassis >> Testing & Repair >> Remove/Install Radiator - AR20.20-P-3865WA

Remove/Install Radiator - AR20.20-P-3865WA

Engine 276.8 in model 172 

Fig 1: Radiator Components Location - Engine 276.8 in model 172
G13841813Courtesy of MERCEDES-BENZ USA
G13841814Courtesy of MERCEDES-BENZ USA

Shown on right-hand side 

G13841815Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
1 Remove fan unit   AR20.40-P-5050WA 
2 Drain coolant from low-temperature circuit   AR09.41-P-6834RKA
3 Remove left cover    
4 Remove right cover (11)    
5 Detach coolant hoses (2, 3, 4) from radiator (1)   AR20.20-P-7441-01RQ 
6 Detach coolant hose (5) from low-temperature circuit cooler SPECIAL TOOL Hose clamp pliers Fig 2
7 Detach power steering expansion reservoir and place to one side with attached lines Engine 276.8 in model 172 up to model year 2016 AR46.25-P-1000W
    Engine 276.8 in model 172 as of model year 2016 AR46.25-P-1000RD
8 Unclip refrigerant line (6) on carrier on A/C compressor    
9 To do this press together retaining clamps (8) and unclip radiator (1) above on radiator support (7) in direction of engine    
10 Take out radiator (1) with a helper in an upward direction INSTALLATION IMPORTANT : Ensure elastomer bearings (10) and guides (9) for the radiator (1) on radiator support (7) is seated properly.  
INSPECT Check     
11 Check elastomer bearings (10) for damage If damage is present

Replace elastomer bearing (10).
 
12 Check cooler (1) for damage If damage is present

Replace the cooler (1).
 
13 Install in the reverse order    
  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
14 Carry out engine test run and check the engine cooling system for proper function and leak tightness    
Fig 2: Identifying Hose Clamp Pliers (003 589 03 37 00)
G11065562Courtesy of MERCEDES-BENZ USA