Remove/Install Left Low Temperature Circuit Circulation Pump - AR09.41-P-6930MSA

Engine 256.9 In Model 213, 238, 257, 290 

Fig 1: Left Low Temperature Circuit Circulation Pump Components Location - Engine 256.9 In Model 238

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 pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-Z-0001-01A
Topical note	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Drain coolant from Low Temperature circuit.		AR09.41-P-6834MSA
2	Remove left front lamp unit.	Engine 256.9 in model 213	AR82.10-P-4730LW
		Engine 256.9 in model 238	AR82.10-P-4733LWO
		Engine 256.9 in model 257, 290	AR82.10-P-4733FR
3	Remove coolant hose (3) from Low Temperature circuit circulation pump 2 (M43/7).		AR09.41-P-1311-01AL
4	Release electrical connector(1) and disconnect.
5	Unclip electric line from the bracket (2).
6	Remove screw (5).	Bolt, holder for circulation pump to cross member	*BA20.10-P-1004-01MRT
7	Remove coolant hose (4) from Low Temperature circuit circulation pump 2 (M43/7).		AR09.41-P-1311-01AL
8	Remove Low Temperature circuit circulation pump 2 (M43/7) with the bracket (2).
9	Remove Low Temperature circuit circulation pump 2 (M43/7) from bracket (2).	When replacing Low Temperature circuit circulation pump 2 (M43/7). M6X1	*BA00.10-P-1002-04A
10	Install in the reverse order.

METRIC SCREWS/BOLTS AND NUTS AS PER MBN 10 105, 10 143

Number	Designation		8.8	10.9
BA00.10-P-1002-04A	M6X1	Nm	9	13

COOLANT THERMOSTAT, COOLANT PUMP

Number	Designation		Engine 256
BA20.10-P-1004-01MRT	Bolt, holder for circulation pump to cross member	Nm	12