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

Engine 177 in model 290 

MODIFICATION NOTES

03.12.2020

Remove screw (5).

Operation step 7.

Shown on engine 177.9 

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Shown on engine 177.8 

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	Risk of injury.  Skin or eye injuries may result when handling hot or glowing objects.	Wear protective gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	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 (min. 2 m).
2	Remove upper engine cover.	Do not install upper engine cover until after the leak test.
3	Remove cap (2).	The coolant temperature should be approx. 40°C.
4	Clamp off coolant hoses (3, 4).	Engine 177.9 in model 290 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 the low-temperature circuit expansion reservoir (1).		AR20.20-P-7441-01RQ
7	Remove screw (5).	Engine 177.8 in model 290
8	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
9	Check the elastomer bearings of the low-temperature circuit expansion reservoir (1) for damage.	If damage is present: ↓ replace elastomer bearing.
10	Install in the reverse order.
11	Check the coolant level in the low-temperature circuit expansion reservoir (1), and correct it if necessary.	Cooling system	*BF20.00-P-1001-02LA
12	Perform a ventilation routine on the ME-SFI [ME] control unit (N3/10).
			AD00.00-P-2000-06FR
13	Check low-temperature circuit for leak tightness.		AR09.41-P-1011MNI
14	Install upper engine cover.

COOLING SYSTEM

Number	Designation				Engine 177 in model 290 except code ME10 (Hybrid vehicle (plug-in, PHEV))	Engine 177 in model 290 with code ME10 (Hybrid vehicle (plug-in, PHEV))
BF20.00-P-1001-02LA	Cooling system	Workshop replacement amount	Main circuit	Liter	≈15, 3	≈14, 3
			Low Temp. circuit 1	Liter	≈6, 4	≈10, 7
			Low Temp. circuit 2	Liter	-	≈5, 6
		Antifreeze/water	Down to -37°C	%	50/50	50/50
			-38°C and below	%	55/45	55/45
			Operating Fluids, Specifications		BB00.40-P-0310-01A	BB00.40-P-0310-01A
			Operating Fluids, Specifications		BB00.40-P-0325-06A	BB00.40-P-0325-06A
			Operating Fluids, Specifications		BB00.40-P-0326-06A	BB00.40-P-0326-06A

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

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

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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