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Drain/pour in coolant - AR20.00-P-1142EH

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ENGINE 651.9 in MODEL 212.098/298 

MODIFICATION NOTES

12.2.14 Work procedure altered and special tools for electrical vacuum pump and NTKL adaptation, added. Operation steps 14 to 26 AR20.00-P-1142-04A
26.9.14 Mischungsverhaltnis Kuhlmittel   BF20.00-P-1001-04A
Fig 1: Draining/Pouring Coolant
G10241010DANGERDANGERNOTESNOTESIMPORTANTREMOVINGIMPORTANTIMPORTANTIMPORTANTIMPORTANTTORQUE SPECIFICATIONNOTESIMPORTANTIMPORTANTIMPORTANTREFER TO CAPACITIES & SPECIFICATIONSREFER TO CAPACITIES & SPECIFICATIONSIMPORTANTFLUID SPECIFICATIONSPECIAL TOOLSPECIAL TOOLSPECIAL TOOLSPECIAL TOOLIMPORTANTINSTALLINGINSPECTDANGERCourtesy of MERCEDES-BENZ USA
DANGER Risk of death  when touching components on vehicles with high-voltage on-board electrical system Do not touch components and open lines of the high-voltage on-board electrical system. Persons who wear electronic implants (e.g. cardiac pacemakers), must not  carry out any work on high-voltage on-board electrical systems. AS54.00-Z-0001-01A
DANGER 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 Note on high-voltage on-board electrical system   AH54.00-P-0010-01A
NOTES Notes on coolant   AH20.00-N-2080-01A
IMPORTANT Notes on coolant level   AH20.00-P-1142-01CW
REMOVING Remove     
1 Perform enable for the high voltage on-board electrical system   AR54.10-P-1150EH
2 Remove DPF differential pressure sensor from air filter housing holder (1)   AR07.04-P-0012CD
IMPORTANT Do not remove the DPF differential pressure sensor from the pressure lines for the CAT diesel particulate filter unit.
3 Unclip electrical connection (2) from holder    
4 Disconnect electrical connection (2)    
5 Remove electrical line (3) on air filter housing bracket (1)    
6 Unscrew cap (5) on coolant expansion reservoir (6) IMPORTANT Unscrew cap (5) slowly and relieve overpressure.  
7 Remove bottom section of soundproofing   AR94.30-P-5300EW
8 Remove catalytic converter diesel particulate filter unit   AR49.10-P-5501CD
9 Remove heat shield (4)    
  Drain coolant at crankcase     
10 Protect power electronics control unit and electrical line of high voltage on-board electrical system against escaping coolant    
11 Push drain hose (7) onto crankcase drain screw (11)    
12 Unfasten crankcase drain screw (11) and drain off coolant IMPORTANT Catch coolant in a suitable container.
IMPORTANT Observe regulations to dispose of coolant.
 
13 Tighten crankcase drain screw (11) and detach drain hose (7) TORQUE SPECIFICATION Coolant drain plug on crankcase *BA20.00-P-1001-02A 
  Drain coolant at radiator (9)     
14 Push drain hose (7) onto fitting on the radiator (8)    
15 Unfasten radiator drain screw (10) at radiator (9) and drain off coolant NOTES
Only remove radiator drain screw (10) until coolant flows out.
The radiator drain screw (10) can be permanently damaged otherwise.
IMPORTANT Catch coolant in a suitable container.
IMPORTANT Observe regulations to dispose of coolant.
 
16 Switch on ignition for about 5 seconds and then switch off again IMPORTANT Repeat this procedure twice after a waiting time of about 30 s in order to empty the low-temperature coolant circuit.  
17 Tighten down radiator drain screw (10) and pull out drain hose (7)    
  Pour in     
18 Pour in coolant and ventilate engine cooling system   AR20.00-P-1142-04A 
REFER TO CAPACITIES & SPECIFICATIONS Anticorrosion/antifreeze agents (Sheet 325.0) Anticorrosion/antifreeze agents (Specification 325.0). See https://bevo.mercedes-benz.com/index.php?language_id=1
REFER TO CAPACITIES & SPECIFICATIONS Coolant specifications Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1
IMPORTANT Use clean coolant again.
FLUID SPECIFICATION Coolant mixing ratio *BF20.00-P-1001-04A 
SPECIAL TOOL NTKL Adaption Figure
SPECIAL TOOL Electric vacuum pump Figure
SPECIAL TOOL Test cap Figure
SPECIAL TOOL Cooler vacuum filling device Figure
19 Switch on ignition for about 5 seconds and then switch off again IMPORTANT Repeat this procedure twice after a waiting time of about 30 s in order to empty the low-temperature coolant circuit.  
INSTALLING Install     
20 Check engine cooling system for leaktightness   AR20.00-P-1010OMA 
21 Install heat shield (4)    
22 Install catalytic converter diesel particulate filter unit   AR49.10-P-5501CD
23 Install bottom section of soundproofing   AR94.30-P-5300EW
24 Contact the electrical connection (2), clip into the holder and attach electrical line (3) to air filter housing holder (1)    
25 Remove DPF differential pressure sensor from air filter housing holder (1)   AR07.04-P-0012CD
26 Perform high voltage on-board electrical system commissioning   AR54.10-P-1150EH
INSPECT Check     
DANGER 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
27 Perform an engine test run and check engine cooling system for proper operation
ENGINE COOLING, GENERAL

Number Designation ENGINE 651
BA20.00-P-1001-02A Coolant drain plug on crankcase Nm 12
COOLANT MIXING RATIO

Number Designation ENGINE ALL
BF20.00-P-1001-04A Coolant mixing ratio Antifreeze/water up to -37°C 50/50
Antifreeze/water up to -45°C 55/45
Specification Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1
Fig 2: Identifying Test Cap (210 589 00 91 00)
G10241011Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Electric Vacuum Pump (285 589 02 21 00)
G10241012Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying NTKL Adaption (285 589 01 21 00)
G10241013Courtesy of MERCEDES-BENZ USA
Fig 5: Identifying Cooler Vacuum Filling Device (285 589 00 21 00)
G10241014Courtesy of MERCEDES-BENZ USA