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190 (W201) (1982-1993) W202 (1993-2000) W203 (2000-2007)
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  • C-Class
  • W202 (1993-2000)
  • Power unit
  • Fuel system
  • Fuel pump — removal and installation

Fuel pump — removal and installation (Mercedes-Benz C-Class W202)

0

Gasoline engine



Gasoline engine


Removal



Warning! Be sure to pay attention to good ventilation of the workplace. Fuel vapors are toxic, avoid using open fire due to the risk of fire!


Warning! Be sure to pay attention to good ventilation of the workplace. Fuel vapors are toxic,…


The fuel pump, when viewed in the direction of travel, is located on the bottom of the vehicle, to the right, in front of the rear axle.

1. Disconnect the ground (–) cable from the battery terminal.

Attention! This will erase the radio's anti-theft code.


2. Reduce the fuel vapor pressure by briefly opening the fuel tank filler cap.

3. Remove the protective cover (69), having first marked its mounting position.

4. Disconnect the inlet (53) and pressure (52) pipes from the clamps, as well as the vent hose (66) with standard hose clamps. Mark the hoses with adhesive tape for ease of installation.



5. Unscrew the pressure line with the hollow bolt on the fuel pump. Wipe up any spilled fuel with a rag.

6. Remove the inlet hose after loosening the hose clamp.

7. Remove the protective covering from the trunk floor.

8. Remove the protective cover of the cable well and protective mat.

8. Remove the protective cover of the cable well and protective mat.


9. Disconnect the plug connection on the fuel pump and route it out through the boot floor. To do this, press out the rubber bushing.

10. Disconnect the electrical wire from the spring clip on the holder.

11. Remove the ventilation hose (66), after loosening the hose clamp (66a).

12. Remove the fuel inlet hose (53), after loosening the hose clamp (53a).

13. Unscrew the bolt (57/1) on the holder (57).

14. Remove the fuel pump (M3m1).

Installation



1. Using the guide, insert the fuel pump into the groove of the plastic sleeve (56a), and the sleeve into the guide of the holder (57). This secures the fuel pump with the plastic sleeve. The plastic sleeve must be installed between the fuel pump and the holder. Make sure that it protrudes on both sides of the holder. Otherwise, contact corrosion of the metals may occur when the fuel pump comes into direct contact with the holder.



2. Bolt the fuel pump to the bracket.

3. Attach the ventilation hose and secure it with a clamp.

4. Attach the fuel inlet hose and secure it with a clamp.

5. Insert the electrical wire through the bottom of the trunk and connect the plug. Seal the hole in the bottom of the trunk with a rubber grommet.

6. Install an insulating mat and protective cover for the cable well.

7. Install the protective cover on the bottom of the trunk.

8. Insert the electrical wire into the spring clips on the holder and secure with the line clamps.

9. Screw the fuel pipe using the hollow bolt and a new copper sealing ring (62). Approximate tightening torque 25 Nm.

10. Remove the hose clamps.

11. Install the protective cover.

12. Connect the ground (–) cable to the battery.

13. Set the time on the clock.

14. Enter the radio anti-theft code.
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C-Class W202 / Fuel system
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W203 (2000-2007) 
  • General information
  • Introduction to guide
  • User manual
  • Maintenance
  • Power unit
  • Gasoline engines
  • Diesel engines
  • Cooling system
  • Ventilation and heating
  • Supply system
  • Injection system (gasoline)
  • Injection system (diesel)
  • Exhaust system
  • Ignition and control system
  • Charge and launch systems
  • Transmission
  • Mechanical gearbox
  • Automatic gearbox
  • Clutch and drive shafts
  • Differential
  • Chassis
  • Brake system
  • Car suspension
  • Steering
  • Body
  • Exterior (external elements)
  • Interior (internal elements)
  • Electrical equipment
  • Equipment and devices
  • Lighting system
  • Electrical diagrams (2000)
  • Electrical diagrams (since 2001)
W202 (1993-2000) 
  • General information
  • User manual
  • Driving a car
  • Car care
  • Maintenance
  • Power unit
  • Gasoline engines
  • Diesel engines
  • Lubrication system
  • Cooling system
  • Heating and ventilation
  • Ignition system
  • Fuel system
  • Injection system (gasoline)
  • Injection system (diesel)
  • Exhaust system
  • Transmission
  • Clutch
  • Car gearbox
  • Chassis
  • Suspension, wheels and tires
  • Steering
  • Brake system
  • Body
  • Exterior (external elements)
  • Interior (internal elements)
  • Doors and windows
  • Electrical equipment
  • Equipment and devices
  • Power devices
  • Lighting system
  • Electrical circuits
190 (W201) (1982-1993) 
  • General information
  • Introduction to the guide
  • Operation and care
  • Maintenance (gasoline)
  • Maintenance (diesel)
  • Troubleshooting
  • Power unit
  • Petrol engine I4
  • Petrol engine V6
  • Diesel engines
  • Engine overhaul
  • Cooling and heating
  • Power system (carburetor)
  • Injection system (gasoline)
  • Injection system (diesel)
  • Exhaust system
  • Charge and start system
  • Ignition system (I4)
  • Ignition system (V6)
  • Diesel heating system
  • Transmission
  • Clutch
  • Mechanical gearbox
  • Automatic gearbox
  • Cardan shaft and axle shafts
  • Chassis
  • Brake system
  • Car suspension
  • Steering
  • Body
  • Exterior (external elements)
  • Interior (internal elements)
  • Doors, locks and windows
  • Electrical equipment
  • Equipment and devices
  • Electrical circuits
 
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