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Removal and installation, dismantling and assembling secondary pump - AR27.10-P-0300A

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TRANSMISSION 722.5## # to 3652931 

Fig 1: Identifying Secondary Pump Components
G04679358Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
REMOVINGINSTALLING Removal, installation     
1 Support transmission NOTES Lowering the transmission may damage components  
2 Remove rear engine cross member Refer to REMOVING AND INSTALLING REAR ENGINE MOUNT (22-2120) , Repair Instructions, Engine Mechanical, engine 104  
3 Unhook exhaust system at rear mount IMPORTANT Suspend on a V-belt.  
4 Unscrew hexagon socket bolts (45) TORQUE SPECIFICATION *BA27.10-P-1001-02A 
5 Remove secondary pump (20)    
6 Remove intermediate plate (19) and O-ring (18)    
DISASSEMBLINGASSEMBLING Dismantling and assembling     
7 Remove pump gears (22, 23) Installation  : Lubricate gears and insert in the grooves.  
8 Detach locking ring (28)    
9 Remove cover (27)    
10 Remove pressure spring (24), spring plate (25) and shut-off piston (21) from the pump housing (20) Check O-ring (29) and Teflon rings (30, 31), replace if necessary.  
11 Install in reverse sequence    
TORQUE SPECIFICATION SECONDARY PUMP

Number Designation Transmission 722.5 Transmission 722.3 Transmission 722.4
BA27.10-P-1001-02A Bolt, secondary pump to transmission housing Nm 8 8 8