16 14 200 Removing and installing/replacing electric fuel pump (N20, N55, N63, N52)
Special tools required:
Recycling
Fuel escapes when fuel lines are detached. Have a suitable collecting vessel ready.
Catch and dispose of escaping fuel.
Observe country-specific waste disposal regulations.
Avoid skin contact (wear gloves)!
Ensure absolute cleanliness when performing repair work on the open fuel system. Dirt contamination in the fuel tank may impair driving or may even result in vehicle breakdown.
Necessary preliminary tasks:
- DRAW OFF FUEL .
- Remove REAR SEAT BENCH .
When renewing electric fuel pump, the connector on the vehicle side must always be renewed.
Procedure for connecting the cables with the wiring harness is described under: CRIMPING ON STOP PARTS
If the connector on the vehicle side has already been renewed once, the connector does not need to be renewed again!
Fold both floor trims (1) to the side.
Unfasten screws (2).
Remove cover for service opening (3).
Disconnect plug connection (1).
Disconnect fuel line (2).
If necessary, disconnect fuel line for auxiliary heating.
Installation note:
Check gasket (3), replace if necessary.
Fit special tool 16 1 190 with wide crank web (1) towards rear onto locking ring (2).
Connect special tool 33 5 070 with reversible ratchet head 1/2" (3) and position on special tool 16 1 190 .
Release locking ring (2) in counterclockwise direction.
Disconnect plug connection (1).
Pull out fuel pressure regulator (1) in direction of arrow.
Feed hose pipe (2) with pressure line out of fuel tank.
Installation note:
Make sure hose pipe is correctly installed.
Unlock and detach quick-connect couplings (1).
Installation note:
Make sure quick-release fasteners are correctly latched.
Press tabs (2) outwards in the direction of the arrows.
Remove electric fuel pump (3) upwards.
Installation note:
Make sure installation position of the lower fine screen on the electric fuel pump in the surge tank is correct.
Make sure electric fuel pump is correctly latched in place the surge tank.