Engine cooling system - check fluid level, adjust to correct level. Inspect anticorrosion/antifreeze protection, adjust to correct concentration · ap2000w2010o · Mercedes-Benz WIS

AP20.00-W-2010O

Engine cooling system - check fluid level, adjust to correct level. Inspect anticorrosion/antifreeze protection, adjust to correct concentration

16.08.2017

Engine

460.9 in model 963, 964

1	Cap
2	Expansion reservoir

N20.30-2123-04

 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 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
Topical note	Notes on coolant		AH20.00-N-2080-01A
	Check
1	Unscrew cap (1) from expansion reservoir (2)
2	Check fluid level	 Check and correct fluid level at a coolant temperature of 0 to 20 °C only. The fluid level is correct, if the coolant is visible in the filler neck. Before correcting the fluid level, check the anticorrosion and antifreeze protection.
3	Check anti-corrosion/antifreeze protection	 To do so, drain off coolant at drain screw on cooler, if necessary.
		 Drain screw to engine radiator	*BA20.20-N-1001-02O
		In case of insufficient corrosion and antifreeze protection
		

		Correcting anticorrosion/antifreeze concentration	AP20.00-W-2010-01O
		 Drain screw to engine radiator	*BA20.20-N-1001-02O
		 Coolant	*BF20.00-N-1001-01OA
4	Correct fluid level, to do so add coolant up to maximum marking	 Use only coolant of the specified composition.
		 Coolant	*BF20.00-N-1001-01OA
5	Screw cap (1) onto expansion reservoir (2)

 Engine radiator, coolant hoses and lines

Number	Designation		Engine 460.9 in model 963, 964
BA20.20-N-1001-02O	Drain screw to engine radiator	Nm	5

 Coolant

Number	Designation			Engine 460.9 in model 963, 964 except code B3H (Water-type secondary retarder)	Engine 460.9 in model 963, 964 with code B3H (Water-type secondary retarder)
BF20.00-N-1001-01OA	Coolant	Total filling capacity	Liter	35,0	50,0
		Anticorrosion and antifreeze agent down to -37 °C	Liter	17,5	25,0
		Anticorrosion and antifreeze agent down to -45 °C	Liter	20,0	28,5
		Sheet		BB00.40-P-0310-01A	BB00.40-P-0310-01A
		Sheet		BB00.40-P-0325-05A	BB00.40-P-0325-05A

Referenced documents

ah2000n208001a Notes on coolant
ap2000w201001o Correcting anticorrosion/antifreeze concentration
as0000z000501a 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.
as2000z000101a Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.