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

Transmission 722.9 in model 216, 221 

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

Courtesy of MERCEDES-BENZ USA

	Notes on automatic transmission		AH27.19-P-0001-01NKB
	Remove/install
1	Remove engine compartment paneling	Model 216 with transmission 722.9 Model 221 with transmission 722.9 except code Z07 (Top protection)	AR61.20-P-1105SX
		Model 221.1 with transmission 722.9 with code Z07 (Top protection)	AR61.20-P-1105SXS
2	Remove drain screw from oil pan	Collect escaping automatic transmission fluid with a suitable container. Do not pry off overflow pipe from the base of the oil pan.
3	Detach electrical connector (1a) on electric transmission oil pump (M42)
4	Detach electrical wiring harness from transmission (5) and set aside
5	Remove bolts (2) and detach electric transmission oil pump (M42)	Bolt, transmission auxiliary oil pump to transmission housing When reinstalling the electric transmission oil pump (M42) Check oil guide pipes with sealing ring (3, 4) on intake and thrust sides for damage and replace if necessary	*BA27.55-P-1009-01D
6	Install in the reverse order
7	Fill transmission (5) with oil.	Transmission 722.9 (except 722.96) in model 216, 221	AR27.00-P-0270W
		Transmission 722.96 in model 216, 221	AR27.00-P-0270SYZ
	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	Perform engine test run and check transmission (5) for proper operation and leaktightness

OIL COOLING

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