FixVault

Remove/Install Fuel Pump Control Unit - AR47.20-P-5717W

Engine 152, 271, 274, 276, 651 in model 172 

Fig 1: Fuel Pump Control Unit Components Location - Engine 276 In Model 172
G13846125NOTESREMOVINGREFER TO SELF-DIAGNOSTIC SYSTEMSINSTALLINGINSTALLATION IMPORTANTREFER TO SELF-DIAGNOSTIC SYSTEMSCourtesy of MERCEDES-BENZ USA
NOTES Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVING Remove     
1 Connect up diagnostic equipment, read out variant coding from fuel system control unit (N118) and save data When replacing the FSCU (N118).  
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04A
2 Remove tank cover   AR64.20-P-1080W
3 Fold insulation mat on fuel tank to the side    
4 Release and disconnect electrical connections (8)    
5 Push retaining tab for bracket (2) to the front (arrow)    
6 Remove FSCU (N118) from bracket (2)    
INSTALLING Install     
7 Install FSCU (N118) in bracket (2) INSTALLATION IMPORTANT Installation: The FSCU (N118) must engage in the retaining tab.  
8 Place electrical connections (8) and lock    
9 Fold insulation mat on fuel tank into the default position    
10 Install tank cover   AR64.20-P-1080W
11 Connect diagnostic unit and transfer stored data in the FSCU (N118) When replacing the FSCU (N118).  
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04A
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
12 Carry out an engine test run