Fuel Delivery Unit, Removing and Installing
Fuel Delivery Unit, Removing And Installing (Engine codes AVH, BEV)
Special tools and equipment
- G3217 Ring nut spanner
- 1332 Torque wrench (40 TO 200 Nm)
Removing
Requirement
- Fuel tank must not be more than 1/2 full
NOTE:
- Empty fuel tank with fuel extractor VAS 5190, if necessary.
- Note safety precautions before beginning work.
WARNING
- The fuel system is under pressure. Before opening the system place a cloth around the connection. Then release the pressure by carefully loosening the connection.
- Always wear eye protection and wear fuel-resistant gloves when disconnecting system connections.
- Check whether a coded radio is installed. If so, obtain anti-theft coding.
- With ignition switched off, disconnect battery ground (GND) strap.
- Fold rear seat bench forward.
- Remove cover from fuel delivery unit.
- Disconnect 4- pin connector as well as supply and return lines from flange (arrow).
NOTE: To do this, press on hose couplings.
- Seal lines so that fuel system is not contaminated by dirt etc.
- Remove union nut with wrench 3217.
- Pull fuel delivery unit and seal out of the opening in fuel tank.
Installing
- Installation of fuel delivery unit is performed in reverse order.
NOTE:
- Insert seal for flange or fuel delivery unit dry into opening of fuel tank.
- Moisten seal with fuel only when installing flange or fuel deliver unit.
- Take care not to bend the fuel gauge sensor when installing fuel delivery unit.
- Note installation position of fuel delivery unit flange.
Mark on flange must align with mark on fuel tank (arrows).
- Make sure fuel hoses are tight.
- After installing fuel delivery unit, check that supply, return and breather lines are still clipped onto fuel tank.
- Adapt (match) engine control module to throttle valve control module, Adapting components and functions.
- Generate readiness code again if DTC memory has been erased or engine control module was disconnected from permanent positive, Adapting components and functions.