Remove/Install Low-Temperature Circuit Expansion Reservoir - AR09.41-P-0001MNM

Engine 177 in model 217, 222 

Courtesy of MERCEDES-BENZ USA

	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 overpressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-Z-0001-01A
Notice	Notes on coolant		AH20.00-P-2080-01KOA
	Notes on coolant level		AH20.00-P-1142-01CW
	Remove/install
1	Switch off ignition and store transmitter key outside of transmission range (at least 2 m)
2	Remove upper engine cover	:  Only install upper engine cover after the leak test.
3	Remove the cap (2)
4	Disconnect coolant hoses (3, 4)	:  Clamp	Fig 1
5	Suction coolant out of low-temperature circuit expansion reservoir (1)	Cooling system	*BF20.00-P-1001-02LA
		Hand pump	Fig 2
6	Remove coolant hoses (3, 4) from low-temperature circuit expansion reservoir (1)		AR20.20-P-7441-01RQ
7	Remove low-temperature circuit expansion reservoir (1)	Wet elastomer bearings with lubricating paste.
		Antifriction paste, rubber parts 2.5 kg, DBL 6867.00	*BR00.45-Z-1002-06A
8	Check elastomer bearings of low-temperature circuit coolant expansion reservoir (1) for damage	If a problem arises ↓ Replace elastomer bearing.
9	Install in the reverse order
10	Check low-temperature circuit for leaktightness		AR09.41-P-1011MNM
11	Perform venting routine of engine management control unit (MCM)
			AD00.00-P-2000-04B
12	Install upper engine cover

COOLING SYSTEM

Number	Designation				Engine 177 in model 217	Engine 177 in model 222
BF20.00-P-1001-02LA	Cooling system	Workshop replacement amount	Main circuit	Liter	≈ 13, 6	≈ 13, 5
			Low Temp Circuit 1	Liter	≈ 6, 2	≈ 6, 2
			Low Temp Circuit 2	Liter	-	-
		Antifreeze/water	Down to -37°C	%	50/50	50/50
			-38°C and below	%	55/45	55/45
			Fluids Specifications		BB00.40-P-0310-01A	BB00.40-P-0310-01A
			Fluids Specifications		BB00.40-P-0325-06A	BB00.40-P-0325-06A
			Fluids Specifications		BB00.40-P-0326-06A	BB00.40-P-0326-06A

Fig 1: Identifying Clamp (000 589 54 37 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Hand Pump (210 589 00 71 00)

Courtesy of MERCEDES-BENZ USA

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1002-06A	Antifriction paste, rubber parts 2.5 kg, DBL 6867.00	A 000 989 01 60