Replace coolant · ap2000d2080h · Mercedes-Benz WIS

AP20.00-D-2080H

Replace coolant

12.05.2020

Engine	271.9, 272.9, 642.8/9, 646.9, 651.9 in model 906
Engine	651.9 in model 900

Shown on ENGINE 646

1	Cap
2	Drain plug for radiator

N20.30-2059-01

N20.20-2051-01

 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
Topical note	Notes on coolant		AH20.00-N-2080-01A
	Remove
1	Check coolant expansion reservoir for leaktightness and condition		AP00.20-D-0052H
2	Check all coolant lines and hoses for leaks and condition		AP00.20-D-0051H
3	Unscrew cap (1)
4	Adjust heater control to maximum heat output	 See owner's manual.
5	Lift/jack up vehicle
			AR00.60-D-1000H
6	Drain coolant at the radiator drain plug (2)		AP20.00-D-2080-01H
7	Check cooling system for contamination	 The old coolant and the corrosion residues must be completely flushed out. In the event of serious contamination, clean the cooling system subject to a separate order.
	Install
8	Close radiator drain plug (2), evacuate cooling system with vacuum and fill
	Service Information: Coolant	Model 900, 906	SI20.00-S-0001B
			AP20.00-D-2080-01H
		 ENGINE 271, 272, coolantCoolant	*BF20.00-N-1001-01K
		 ENGINE 642, 646, 651, coolantCoolant	*BF20.00-N-1001-01A
 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
9	Start engine and bleed cooling and heating system	 Warm up engine at varying speeds. Replace coolant continuously up to the "Max." mark.
10	Turn off engine
11	Screw on cap (1)
12	Confirm replacement of coolant in the maintenance booklet or in the DSB

 Engine cooling

Number	Designation			Engine 642.896/898/992/993	Engine 646.984/985/986/989/990
BF20.00-N-1001-01A	Coolant	Total filling capacity	Liter	10	9,5
		Corrosion/antifreeze down to -37 °C	Liter	5	4,8
		Corrosion/antifreeze down to -45 °C	Liter	5,5	5,2
		Sheet		BB00.40-P-0310-01A	BB00.40-P-0310-01A
		Sheet		BB00.40-P-0325-00A	BB00.40-P-0325-00A
		Sheet		BB00.40-P-0325-06A	BB00.40-P-0325-06A
		Sheet		BB00.40-P-0326-06A	BB00.40-P-0326-06A

 Engine cooling

Number	Designation			Engine 651.955 in model 900 Engine 651.955/956/957 in model 906
BF20.00-N-1001-01A	Coolant	Total filling capacity	Liter	10
		Corrosion/antifreeze down to -37 °C	Liter	4,8
		Corrosion/antifreeze down to -45 °C	Liter	5,2
		Sheet		BB00.40-P-0310-01A
		Sheet		BB00.40-P-0325-00A
		Sheet		BB00.40-P-0325-06A
		Sheet		BB00.40-P-0326-06A

 Engine cooling

Number	Designation			Engine 271.951 in model 906	Engine 272.979 in model 906
BF20.00-N-1001-01K	Coolant	Total filling capacity	Liter	7	7
		Corrosion/antifreeze down to -37 °C	Liter	3,5	3,5
		Corrosion/antifreeze down to -45 °C	Liter	3,9	3,9
		Sheet		BB00.40-P-0310-01A	BB00.40-P-0310-01A
		Sheet		BB00.40-P-0325-00A	BB00.40-P-0325-00A
		Sheet		BB00.40-P-0325-06A	BB00.40-P-0325-06A
		Sheet		BB00.40-P-0326-06A	BB00.40-P-0326-06A

Referenced documents

ah2000n208001a Notes on coolant
ap0020d0051h All lines and hoses, sensor cables - Check leaktightness and condition
ap0020d0052h Check leaktightness and condition of all containers, devices, shock absorbers, covers, boots, protective caps
ap2000d208001h Drain/fill in coolant
ar0060d1000h Lift/jack up vehicle
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.
si2000s0001b Service Information: Coolant