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Home >> Mercedes Benz >> 2022 >> CLS450 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Air Intake, Turbocharging - 257 Chassis >> Testing & Repair >> Drain/Fill Low-Temperature Coolant Circuit - AR09.41-P-6834MSA

Drain/Fill Low-Temperature Coolant Circuit - AR09.41-P-6834MSA

Engine 256.9 in model 213, 238, 257, 290 

MODIFICATION NOTES

04.05.2018 Cooling system Engine 256 in models 257.358/359 BF20.00-P-1001-06MRT
04.05.2018 Cooling system Engine 256 in model 213, 238, 257.361, 290 BF20.00-P-1001-06MRT

Shown on model 257 

G14548228Courtesy of MERCEDES-BENZ USA

Shown on model 290 

G14548229Courtesy 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 overpressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.
AS20.00-Z-0001-01A
Notice Notes on coolant   AH20.00-P-2080-01KOA
  Notes on coolant level   AH20.00-P-1142-01CW
REMOVING Remove     
1 Remove cap from the low-temperature circuit expansion reservoir.    
2 Remove lower engine compartment paneling. Engine 256.9 in model 290 AR61.20-P-1105FRX
    Engine 256.9 in model 213, 238 AR61.20-P-1105LWE
    Engine 256.9 in model 257 AR61.20-P-1105FR
  Drain off     
3 Remove coolant hose (2) from cooler (1) and collect escaping coolant in a suitable container.   AR09.41-P-1311-01AL 
4.1 Release and disconnect coolant hoses (3) and collect escaping coolant in a suitable container. Engine 256.9 in model 213, 238, 257  
      AR09.41-P-1311-01AL 
4.2 Remove coolant hose (7) from cooler (8) and collect escaping coolant in a suitable container. Engine 256.9 in model 290  
      AR09.41-P-1311-01AL 
5 Unclip coolant line (5) from fan unit.    
6 Release and disconnect coolant line (5) and coolant hose (4) and collect escaping coolant in a suitable container.   AR09.41-P-1311-01AL 
7 Remove coolant hose (6) from oil cooler and collect escaping coolant in a suitable container.   AR09.41-P-1311-01AL 
  Pour in     
8 Attach coolant hose (6) to oil cooler.   AR09.41-P-1311-01AL 
9 Connect coolant line (5) and coolant hose (4) and lock.   AR09.41-P-1311-01AL 
10 Clip coolant line (5) onto cooler (8) fan unit.    
11.1 Connect coolant hoses (3) and lock. Engine 256.9 in model 213, 238, 257 AR09.41-P-1311-01AL 
11.2 Attach coolant hose (7) to cooler (8). Engine 256.9 in model 290  
      AR09.41-P-1311-01AL 
12 Attach coolant hose (2) to cooler (1).   AR09.41-P-1311-01AL 
13 Add coolant and bleed low-temperature circuit   AR20.00-P-1142-04OLC
    Test pressure for pressure-testing the engine cooling system *BE20.30-P-1005-01A 
    FLUID SPECIFICATION Cooling system *BF20.00-P-1001-06MRT 
    SPECIAL TOOL Pressure pump Fig 3
    SPECIAL TOOL Electric vacuum pump Fig 4
    SPECIAL TOOL NTKL Adaption Fig 1
    SPECIAL TOOL Cooler vacuum filling device Fig 5
    SPECIAL TOOL Test cap Fig 2
INSPECT Check     
14 Check low-temperature circuit for leak tightness.   AR20.00-P-1010MSA
INSTALLING Install     
15 Install lower engine compartment lining. Engine 256.9 in model 290 AR61.20-P-1105FRX
    Engine 256.9 in model 213, 238 AR61.20-P-1105LWE
    Engine 256.9 in model 257 AR61.20-P-1105FR
RADIATOR OR EXPANSION RESERVOIR CAP

Number Designation 2-stage latch cover
BE20.30-P-1005-01A Test pressure for pressure-testing the Overpressure engine cooling system bar 1, 4
COOLING SYSTEM

Number Designation Engine 256 in model 257.358/359 Engine 256 in model 213, 238, 257.361, 290
BF20.00-P-1001-06MRT Cooling system Workshop replacement amount Main circuit Liter ==12 = 14
Low-temperature circuit Liter = 3 =4
Antifreeze/water to -37°C % 50/50 50/50
as from -38°C % 55/45 55/45
Specifications for Operating Fluids, sheet   BB00.40-P-0310-01A BB00.40-P-0310-01A
Specifications for Operating Fluids, sheet   BB00.40-P-0325-06A BB00.40-P-0325-06A
Specifications for Operating Fluids, sheet   BB00.40-P-0326-06A BB00.40-P-0326-06A
Fig 1: Identifying NTKL Adaption (285 589 01 21 00)
G12618414Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Test Cap (210 589 00 91 00)
G12618396Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Pressure Pump (124 589 24 21 00)
G12817109Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Electric Vacuum Pump (285 589 02 21 00)
G12618417Courtesy of MERCEDES-BENZ USA
Fig 5: Identifying Cooler Vacuum Filling Device (285 589 00 21 00)
G13656436Courtesy of MERCEDES-BENZ USA