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Home >> Mercedes Benz >> 2018 >> GLS450 >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System - 166 Chassis >> Testing & Repair >> Drain/Pour In Coolant - AR20.00-P-1142GQ

Drain/Pour In Coolant - AR20.00-P-1142GQ

Engine 157, 276, 278, 642 in model 292 

Engine 157, 276, 278, 642, 651 in model 166 

MODIFICATION NOTES

15.04.2016 Work procedure completely revised.    

Shown on model 166 with engine 278 

G14134628Courtesy of MERCEDES-BENZ USA

Engine 276 

G14134629Courtesy of MERCEDES-BENZ USA

Shown on model 222 with engine 651 

G14134630Courtesy 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 
Notes on coolant   AH20.00-N-2080-01A 
  Notes on coolant level   AH20.00-P-1142-01CW 
  Drain off     
1 Unscrew cap (2) on coolant expansion reservoir (4)    
2 Remove front and center underfloor paneling   AR61.30-P-1001GQ
3 Push drain hose (3) onto left fitting (3a) on radiator (6)    
4 Open drain valve (7) at radiator (6) and drain coolant IMPORTANT Observe regulations to dispose of coolant.  
5 Unfasten drain screw from coolant line to ATL and drain off coolant Engine 157, 278 in model 166, 292  
6 Unfasten coolant pump drain screw (5) at coolant pump (1) Engine 276 in model 166, 292  
7 Push drain hose (3) onto coolant pump drain screw (5) Engine 276 in model 166, 292  
8 Open coolant pump drain screw (5) at coolant pump (1) and drain off coolant Engine 276 in model 166, 292  
9 Remove catalytic converter DPF unit Engine 651 in model 166 AR49.10-P-5501GQ
10 Unscrew screws (11) and remove heat shield (12) Engine 651 in model 166  
11 Unscrew screws (13) and remove heat shield (14) Engine 651 in model 166  
12 Unfasten crankcase drain screw (10) Engine 651 in model 166  
13 Push drain hose (3) onto crankcase drain screw (10) Engine 651 in model 166  
14 Open crankcase drain screw (10) and drain of coolant Engine 651 in model 166  
  Pour in     
15 Close jiggle valve (7) on cooler (6) and detach drain hose (3) from fitting (3a)    
16 Fasten drain screw from coolant line to ATL Engine 157, 278 in model 166, 292
TORQUE SPECIFICATION Drain screw to coolant line		 *BA09.40-P-1010-01R 
17 Push drain hose (3) onto coolant pump drain screw (5) Engine 276 in model 166, 292  
18 Tighten coolant pump drain screw (5) at coolant pump (1) Engine 276 in model 166, 292
TORQUE SPECIFICATION Drain screw on coolant pump		 *BA20.10-P-1008-01AA 
19 Push drain hose (3) onto crankcase drain screw (10) Engine 651 in model 166  
20 Tighten down crankcase drain screw (10) Engine 651 in model 166
TORQUE SPECIFICATION Coolant drain plug on crankcase		 *BA20.00-P-1001-02A 
21 Install heat shield (14) Engine 651 in model 166
TORQUE SPECIFICATION Heat shield on starter		 *BA15.30-P-1004-01P 
22 Install heat shield (12) Engine 651 in model 166
TORQUE SPECIFICATION Bolt, heat shield to engine support		 *BA22.10-P-1003-02A 
23 Install catalytic converter DPF unit Engine 651 in model 166 AR49.10-P-5501GQ
24 Pour in coolant and bleed cooling system IMPORTANT Re-use clean coolant. AR20.00-P-1142-04A 
    FLUID SPECIFICATION Engine 157 in model 166
Engine 157 in model 292Cooling system		 *BF20.00-P-1001-02FA 
    FLUID SPECIFICATION Engine 651 in model 166 Cooling system *BF20.00-P-1001-02AA 
    FLUID SPECIFICATION Engine 276 in model 166 except code ME05 (HYBRID DRIVE 80 kW VARIANT (INCLUDING PLUGIN))
Engine 276 in model 166 with code ME05 (HYBRID DRIVE 80 kW VARIANT (INCLUDING PLUGIN))
Engine 276 in model 292Cooling system		 *BF20.00-P-1001-02BA 
    FLUID SPECIFICATION Engine 278 in model 166
Engine 278 in model 292Cooling system		 *BF20.00-P-1001-02EA 
    FLUID SPECIFICATION Engine 642 in model 166
Engine 642 in model 292Cooling system		 *BF20.00-P-1001-02W 
    SPECIAL TOOL Electric vacuum pump Fig 3
    SPECIAL TOOL NTKL Adaption Fig 1
    SPECIAL TOOL Test cap Fig 2
    SPECIAL TOOL Cooler vacuum filling device Fig 4
INSPECT Check     
25 Check cooling system for leak tightness   AR20.00-P-1010GQ 
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
26 Carry out engine test run and check the cooling system for proper operation and leaktightness    
TURBOCHARGER

Number Designation Engine 157 Engine 278
BA09.40-P-1010-01R Drain screw to coolant line Stage 1 Nm 6 6
Stage 2 ∠° 90 90
STARTER

Number Designation Engine 651
BA15.30-P-1004-01P Heat shield on starter   Nm 9
ENGINE COOLING, GENERAL

Number Designation Engine 651
BA20.00-P-1001-02A Coolant drain plug on crankcase   Nm 12
COOLANT PUMP, COOLANT THERMOSTAT

Number Designation Engine 276
BA20.10-P-1008-01AA Drain screw on coolant pump Stage 1 Nm 6
Stage 2 ∠° 90
ENGINE SUPPORT (ENGINE SIDE)

Number Designation Engine 651
BA22.10-P-1003-02A Bolt, heat shield to engine support Nm 9
COOLING SYSTEM

Number Designation Engine 651 in model 166
BF20.00-P-1001-02AA Cooling system Workshop replacement amount Main circuit Liter ≈ 10, 0
Low temperature circuit Liter -
Antifreeze/water Down to -37°C % 50/50
-38°C and below % 55/45
Specifications for Operating Fluids, sheet BB00.40-P-0310-01A
Specifications for Operating Fluids, sheet BB00.40-P-0325-00A
Specifications for Operating Fluids, sheet BB00.40-P-0326-00A
COOLING SYSTEM

Number Designation Engine 276 in model 166 except code ME05 (HYBRID DRIVE 80 kW VARIANT (INCLUDING PLUGIN)) Engine 276 in model 166 with code ME05 (HYBRID DRIVE 80 kW VARIANT (INCLUDING PLUGIN))
BF20.00-P-1001-02BA Cooling system Workshop replacement amount Main circuit L ≈ 10, 5 ≈ 9, 7
Low-temperature circuit L ≈ 1, 9 ≈ 6, 0
Antifreeze/water Up to -37°C % 50/50 50/50
As of -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-0325-00A BB00.40-P-0325-00A
Specifications for Operating Fluids, sheet BB00.40-P-0326-00A BB00.40-P-0326-00A
COOLING SYSTEM

Number Designation Engine 276 in model 292
BF20.00-P-1001-02BA Cooling system Workshop replacement amount Main circuit L ≈ 10, 5
Low-temperature circuit L ≈ 1, 9
Antifreeze/water Up to -37°C % 50/50
As of -38°C % 55/45
Specifications for Operating Fluids, sheet BB00.40-P-0310-01A
Specifications for Operating Fluids, sheet BB00.40-P-0325-00A
Specifications for Operating Fluids, sheet BB00.40-P-0326-00A
COOLING SYSTEM

Number Designation Engine 278 in model 166 Engine 278 in model 292
BF20.00-P-1001-02EA Cooling system Workshop replacement quantity Main circuit Liter ≈ 11, 4 ≈ 11, 4
Low temperature circuit Liter ≈ 2, 5 ≈ 2, 5
Antifreeze/water Up to -37°C % 50/50 50/50
As of -38°C % 55/45 55/45
Specification BB00.40-P-0310-01A BB00.40-P-0310-01A
Specification BB00.40-P-0325-00A BB00.40-P-0325-00A
Specification BB00.40-P-0326-00A BB00.40-P-0326-00A
COOLING SYSTEM

Number Designation Engine 157 in model 166 Engine 157 in model 292
BF20.00-P-1001-02FA Cooling system Workshop change quantity Main circuit Liter ≈ 8 ≈ 8
Low-temperature circuit Liter ≈ 2 ≈ 2
Antifreeze/water Up to -37°C % 50/50 50/50
As of -38°C % 55/45 55/45
Specification BB00.40-P-0310-01A BB00.40-P-0310-01A
Specification BB00.40-P-0325-00A BB00.40-P-0325-00A
Specification BB00.40-P-0326-00A BB00.40-P-0326-00A
COOLING SYSTEM

Number Designation Engine 642 in model 166 Engine 642 in model 292
BF20.00-P-1001-02W Cooling system Workshop replacement amount Main circuit L ≈ 11, 5 ≈ 11, 5
Low-temperature circuit L - -
Antifreeze/water Down to -37°C % 50/50 50/50
-38°C and below % 55/45 55/45
Specification BB00.40-P-0310-01A BB00.40-P-0310-01A
Specification BB00.40-P-0325-00A BB00.40-P-0325-06A
Specification BB00.40-P-0326-00A BB00.40-P-0326-06A
Fig 1: Identifying NTKL Adaption (285 589 01 21 00)
G09975410Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Test Cap (210 589 00 91 00)
G09975406Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Electric Vacuum Pump (285 589 02 21 00)
G09975413Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Cooler Vacuum Filling Device (285 589 00 21 00)
G09973931Courtesy of MERCEDES-BENZ USA
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