Remove/Install Transmission Cooling Coolant Recirculation Pump - AR27.55-P-7380MFA

Transmission 724.1 in model 118, 177, 247 with engine 139 

Transmission 724.1 in model 118, 177, 247 with engine 260 

Transmission 724.1 in model 118, 177, 247 with engine 282 

except code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN)) 

Transmission 724.1 in model 118, 177, 247 with engine 654 

Fig 1: Transmission Cooling Coolant Recirculation Pump Components Location - Transmission 724.1 In Model 118 With Engine 139, 260 (Shown On Model 247 With Engine 654)

Courtesy of MERCEDES-BENZ USA

Shown on model 247 with engine 654 

Courtesy of MERCEDES-BENZ USA

Shown on model 177 with engine 139 

	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
	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  caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
Notice	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Drain off coolant.	Transmission 724.1 in model 118, 177, 247 with engine 654	AR20.00-P-1142MFF
		Transmission 724.1 in model 118, 177, 247 with engine 260 Transmission 724.1 in model 118, 177, 247 with engine 282 except code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN))	AR20.00-P-1142MFC
		Transmission 724.1 in model 118, 177, 247 with engine 139 : Install lower engine compartment paneling only after checking it for proper functioning and leak tightness.	AR20.00-P-1142MFG
2	Remove front left fender liner.	Transmission 724.1 in model 118, 177, 247 with engine 139	AR88.10-P-1301MFA
3	Release electrical connector (1) and disconnect.
4	Unclip electric line (6) from holder (2).	Transmission 724.1 in model 118, 177, 247 with engine 260 Transmission 724.1 in model 118, 177, 247 with engine 282 except code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN)) Transmission 724.1 in model 118, 177, 247 with engine 654 Clip remover	Fig 2
5	Release and remove coolant hoses (3, 4).	Transmission 724.1 in model 118, 177, 247 with engine 139 Transmission 724.1 in model 118, 177, 247 with engine 260 Transmission 724.1 in model 118, 177, 247 with engine 282 except code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN)) Transmission 724.1 in model 118, 177, 247 with engine 654	AR20.20-P-7441-01RQ
6	Remove screw (5) and remove holder (2).	M6x1	*BA00.10-P-1002-04A
7	Remove transmission oil cooling coolant circulation pump (M13/7).
8	Install in the reverse order.
	Check
9	Check engine cooling system for leak tightness.	Transmission 724.1 in model 118, 177, 247 with engine 654	AR20.00-P-1010MFE
		Transmission 724.1 in model 118, 177, 247 with engine 260 Transmission 724.1 in model 118, 177, 247 with engine 282 except code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN))	AR20.00-P-1010MFD
		Transmission 724.1 in model 118, 177, 247 with engine 139	AR20.00-P-1010MFG
	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
10	Perform engine test run and check transmission and engine cooling system for proper operation and leak tightness while doing so.
11	Install lower engine compartment lining.	Transmission 724.1 in model 118, 177, 247 with engine 139 Transmission 724.1 in model 118, 177, 247 with engine 260 with code M016 (Uprated engine)	AR61.20-P-1105MFR
		Transmission 724.1 in model 118, 177, 247 with engine 260 except code M016 (Uprated engine) Transmission 724.1 in model 118, 177, 247 with engine 282 except code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN))	AR61.20-P-1105MFA
		Transmission 724.1 in model 118, 177, 247 with engine 654	AR61.20-P-1105MFE

Fig 2: Identifying Clip Remover (452 589 01 63 00)

Courtesy of MERCEDES-BENZ USA