Replace coolant · ap2000w2080b · Mercedes-Benz WIS

AP20.00-W-2080B

Replace coolant

03.08.2016

Engine	542.9 in model 930, 932, 934
	with code KMKL (Additional radiator)

Modification notes

01.08.2016

Kühlmittel

BF20.00-N-1001-01B

1	Cap
2	Drain screw
3	Discharge hole

W20.20-1062-01

W20.20-1063-01

4	Coolant hose
5	Drain screw

W20.20-1064-01

W20.00-1050-01

 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
 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 on coolant		AH20.00-N-2080-01A
1	Inspect cooling and heating system for leaks and proper condition before replacing the coolant		AP20.00-W-2050A
2	Remove cap (1) from filler neck of expansion reservoir on rear cooling system	Next to expansion reservoir for fluid coupling.
		 The coolant expansion reservoir cap on the engine radiator must not be opened.
3	Set temperature control on heater operating unit, heater-air conditioning system or the automatic climate control to full heat output
4	Remove drain plug (2) from engine radiator and drain coolant.	 Catch coolant in suitable vessel. Note coolant quantity, up to approx. 105 l of coolant may flow out.
5	Unscrew drain screw (5) from left and right of crankcase, drain coolant
6	Detach coolant hose (4) below the fluid coupling	 To enable coolant circuit to be fully drained. The old coolant and the corrosion residues must be completely flushed out.
		If there is severe contamination:
		
		Clean engine cooling system, subject to separate repair order.
7	Mount coolant hose (4) under the fluid coupling
8	Screw in drain screw (5) on crankcase at left and right	 Coolant drain plug to cylinder crankcase	*BA01.40-N-1001-01D
9	Screw-in drain screw (2) on engine radiator	 Coolant drain plug to radiator	*BA20.20-N-1001-01C
10	Pour in coolant	 Use only coolant of the specified composition.
		 Coolant	*BF20.00-N-1001-01B
11	Start engine and bleed cooling and heating system	 Run engine at varying speeds for approx. 3 minutes.
12	Refill coolant up to the max. mark
13	Screw-on cap (1) for filler neck of expansion reservoir on rear cooling system

 Cylinder crankcase, timing case cover, end cover

Number	Designation			ENGINE 541.9, 542.9
BA01.40-N-1001-01D	Coolant drain plug to cylinder crankcase	M141.5	Nm	50

 Radiator, coolant hoses

Number	Designation		Engine 541.9, 542.9
BA20.20-N-1001-01C	Coolant drain plug to radiator	Nm	4

 Filling capacities for engine cooling system

Number	Designation			Engine 542.9 with code KMKL
BF20.00-N-1001-01B	Coolant	Total filling capacity	Liter	105
		Anticorrosion and antifreeze agent down to -37 °C	Liter	53
		Anticorrosion and antifreeze agent down to –45 °C	Liter	58
		Sheet		BB00.40-P-0310-01A
		Sheet		BB00.40-P-0325-05A

Referenced documents

ah2000n208001a Notes on coolant
ap2000w2050a Cooling and heating system - Check condition of radiator, lines and hoses
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.