Remove/install auxiliary oil pump for automatic transmission - AR27.30-P-0651RK

TRANSMISSION 722.9 in MODEL 231 

Fig 1: Auxiliary Oil Pump For Automatic Transmission Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Notes on automatic transmission		AH27.19-P-0001-01NKB
	Remove/install
1	Detach lower engine compartment paneling		AR61.20-P-1105RK
2	Remove drain screw from oil pan	Do not pry off overflow pipe from the base of the oil pan. Collect escaping transmission oil with drain pan and note the quantity of transmission oil.
3	Release and disconnect electrical connection (1) from oil pump electric motor (M42)
4	Remove bolts (2) and remove oil pump electric motor (M42)	Bolt, transmission auxiliary oil pump to transmission housing	*BA27.55-P-1009-01D
5	Pry left and right fitting (3) out of oil pump electric motor (M42)	Check fitting (3) with sealing ring for intake and thrust side for damage, and replace, if necessary. Do not insert fitting (3) into transmission, but into oil pump electric motor (M42) instead.
6	Install in the reverse order
7	Fill automatic transmission with transmission oil.		AR27.00-P-0270W
	Check
	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	Check transmission for function and leaks

OIL COOLING

Number	Designation		Transmission 722.9
BA27.55-P-1009-01D	Bolt, transmission auxiliary oil pump to transmission housing	Nm	8