Remove/install expansion reservoir · ar2030s4950e · Mercedes-Benz WIS

AR20.30-S-4950E

Remove/install expansion reservoir

29.05.2020

Model	447 with engine 274, 622, 651
Model	448 with engine 274

Modification notes

28.05.2020

Work procedure revised.

The whole document

Shown with ENGINE 651

1	Coolant expansion reservoir
2	Return hose
3	Hose
4	Screw
5	Electrical connector

S20.30-4510-06

 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
	Notes on coolant level		AH20.00-P-1142-01CW
 	Remove/install
1	Remove cap at coolant expansion reservoir (1).	 Turn cap of coolant expansion reservoir (1) by half a turn counterclockwise, release overpressure, then remove cap.
		 Installation: Only install cap after engine cooling system leak test.
2	Suction off coolant from coolant expansion reservoir (1).
	Service Information: Coolant	Model 447 with engine 274, 622, 651	SI20.00-S-0001B
		 Engine 622, 651Coolant	*BF20.00-N-1001-01A
		 Engine 274Coolant	*BF20.00-N-1001-01K
		 Hand pump	*210589007100
3	Remove return hose (2).	 To do this unfasten safety clip and detach return hose (2).
		 Installation: Moisten sealing ring of return hose (2) with lubricant.
		 Installation: Check sealing ring for damage.
		Lubricant, rubber assembly 1 l	*BR00.45-Z-1010-06A
		If damage is present,
		
		Replace sealing ring.
4	Remove hose (3).	 Engine 274 To do this, unfasten clamp and remove hose (3).
		 Engine 622, 651 To do this, unfasten safety clip and remove hose (3).
		 Installation: Check clamp for damage.
		If damage is present,
		
		Replace clamp.
5	Disconnect electrical connector (5).
6	Remove coolant expansion reservoir (1).	 For this purpose, unscrew screws (4) and remove coolant expansion reservoir (1) upwards.
7	Install in the reverse order.
 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
8	Purge engine cooling system.		AR20.00-S-1142-06E
	Service Information: Coolant	Model 447 with engine 274, 622, 651	SI20.00-S-0001B
	Check
9	Check engine cooling system for leak tightness.		AR20.00-S-1010E

 Engine cooling

Number	Designation			Engine 622.851 except code H12 (Auxiliary hot-water heater)	Engine 622.851 with code H12 (Auxiliary hot-water heater)
BF20.00-N-1001-01A	Coolant	Total filling capacity	Liter	10,0	13,0
		Corrosion/antifreeze down to -37 °C	Liter	5,0	6,5
		Corrosion/antifreeze down to -45 °C	Liter	5,5	7,25
		Sheet		BB00.40-P-0310-01A	BB00.40-P-0310-01A
		Sheet		BB00.40-P-0325-06A	BB00.40-P-0325-06A
		Sheet		BB00.40-P-0326-06A	BB00.40-P-0326-06A
		Sheet		-	-

 Engine cooling

Number	Designation			Engine 622.951 except code H12 (Auxiliary hot-water heater)	Engine 622.951 with code H12 (Auxiliary hot-water heater)
BF20.00-N-1001-01A	Coolant	Total filling capacity	Liter	10,7	13,7
		Corrosion/antifreeze down to -37 °C	Liter	5,4	6,9
		Corrosion/antifreeze down to -45 °C	Liter	5,9	7,5
		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 651.950 except code H12 (Auxiliary hot-water heater)	Engine 651.950 with code H12 (Auxiliary hot-water heater)
BF20.00-N-1001-01A	Coolant	Total filling capacity	Liter	10,4	13,4
		Corrosion/antifreeze down to -37 °C	Liter	5,2	6,7
		Corrosion/antifreeze down to -45 °C	Liter	5,7	7,4
		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 274 in model 447, 448
BF20.00-N-1001-01K	Coolant	Total filling capacity	Liter	10,4
		Corrosion/antifreeze down to -37 °C	Liter	5,2
		Corrosion/antifreeze down to -45 °C	Liter	5,7
		Sheet		BB00.40-P-0310-01A
		Sheet		BB00.40-P-0325-00A
		Sheet		BB00.40-P-0325-06A
		Sheet		BB00.40-P-0326-06A

210 589 00 71 00

Hand pump

Repair materials

Number	Designation	Order number
BR00.45-Z-1010-06A	Lubricant, rubber assembly 1 l	A 000 989 03 67

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