Remove/install expansion reservoir · ar2030d4950sd · Mercedes-Benz WIS

AR20.30-D-4950SD

Remove/install expansion reservoir

29.05.2020

Engine	271.951, 272.979, 642.896/898/992/993, 646.984/985/986/989, 651.955/956/957 in model 906
Engine	651 in model 900

Modification notes

28.05.2020

Work procedure revised

The whole document

Shown with engine 646.985

1	Coolant expansion reservoir
2	Coolant hose
3	Coolant hose
4	Coolant hose
5	Screw
6	Electrical connector
S41	Coolant level indicator switch

D20.30-0014-06

Shown with engine 642.898

1	Coolant expansion reservoir
7	Bolts
8	Bracket

D20.20-1134-11

 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 avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
Topical note	Notes on coolant		AH20.00-N-2080-01A
 	Remove/install
1	Remove cap from coolant expansion reservoir (1).	 Turn cap at coolant expansion reservoir (1) by half a turn counterclockwise, release overpressure, then remove cap from coolant expansion reservoir (1).
2	Suction off coolant from coolant expansion reservoir (1).
	Notes on coolant level		AH20.00-P-1142-01CW
	Service Information: Coolant		SI20.00-S-0001B
		 Engine 642.896/898/992/993 in model 906 Engine 646.984/985/986/989 in model 906 Engine 651.955 in model 900 Engine 651.955/956/957 in model 906Coolant	*BF20.00-N-1001-01A
		 Engine 271.951 in model 906 Engine 272.979 in model 906Coolant	*BF20.00-N-1001-01K
		 Hand pump	*210589007100
3	Remove bracket (8) with AdBlue® filler neck from coolant expansion reservoir (1).	Engine 642.898
		 To do this, remove bolts (7).
		 Place bracket (8) outside the working area. It must be possible to remove coolant expansion reservoir (1) from guide.
4	Remove coolant hoses (2, 3) at coolant expansion reservoir (1).
5	Remove coolant hose (4) at coolant expansion reservoir (1).	Engine 271, 642, 646, 651
6	Remove screw (5).	Engine 271, 272, 642.896/992/993, 646, 651
7	Lift coolant expansion reservoir (1) and disconnect electrical connector (6) at coolant level indicator switch (S41).
8	Remove coolant expansion reservoir (1).
9	Turn coolant level indicator switch (S41) in direction of arrow and remove.	When replacing coolant expansion reservoir (1).
10	Install in the reverse order.
	Check
11	Check engine cooling system for leak tightness.		AR20.00-S-1010S

 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

210 589 00 71 00

Hand pump

Referenced documents

ah0000p500001a Notes on avoiding damage through contamination and foreign objects
ah2000n208001a Notes on coolant
ah2000p114201cw Notes on coolant level
ar2000s1010s Inspect cooling system for leaks
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