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Remove/install oil pump - AR27.10-P-0400A

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TRANSMISSION 722.6 

Fig 1: Identifying Oil Pump Components
G04606541Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
REMOVINGINSTALLING Remove/Install    
1 Remove transmission with torque converter Model 129, 140, 170, 202, 208, 210 AR27.10-P-0500B 
Model 163 AR27.10-P-0500GH
Model 203 without 4MATIC, 209 AR27.10-P-0500P
Model 203 with 4MATIC AR27.10-P-0500PW
Model 211 with 4MATIC AR27.10-P-0500TW
Model 215, 220 without 4MATIC AR27.10-P-0500I
Model 220 with 4MATIC AR27.10-P-0500IW
2 Put transmission down on workbench    
3 Take transmission housing (1) off torque converter housing (2) IMPORTANT Internal Torx drive bolts (2a) 15 bolts and internal Torx drive bolts (1a) 2 bolts.  
IMPORTANTInstallation:  The intermediate panel (6)on the torque converter housing (2) can usually be used several times. The panel must not be coated with sealant.  
TORQUE SPECIFICATION Bolt, transmission housing to converter housing *BA27.40-P-1002-01A 
4 Pull torque converter housing (2) off transmission housing (1) IMPORTANT Ensure that the multi-disk clutch K1 (3) does not fall out.  
5 Unscrew internal Torx drive bolts (4a) of oil pump (4) TORQUE SPECIFICATION Bolt, oil pump with multi-disk brake B1 to converter housing *BA27.40-P-1003-01A 
6 Screw two opposed bolts (a) into the oil pump housing (4) and press the oil pump (4) out of the converter housing (2) by applying light blows with a plastic hammer.    
INSPECT Inspect     
7 Check oil pump (4) IMPORTANT According to condition: ↓
Dismantle and assemble oil pump
AR27.50-P-0720-01A 
8 Check Teflon rings (5a) of multi-disk brake B1 (5), replace if necessary IMPORTANTInstallation:  Insert both Teflon rings (5a) into groove with grease so that the joint stays together.  
9 Install in the reverse order    
TORQUE SPECIFICATION Housing

Number Designation Transmission 722.6 except 722.660/661/662 /663/666/674 Transmission 722.660/661/66 2/663/666/674
BA27.40-P-1002-01A Bolt, transmission housing to torque converter housing Nm 20 20
BA27.40-P-1003-01A Bolt, oil pump with multi-disk brake B1 to torque converter housing Nm 20 20