Fuel Lines, Removing And Installing: Notes
Special tools and workshop equipment required
- Engine Bung Set:VAS6122
Removing
-- Seal all the open lines and connections with clean plugs from the :VAS6122 .
-- Remove the underbody trim panel in front of the right rear axle. Refer to COMPONENT LOCATION OVERVIEW - UNDERBODY TRIM PANELS .
-- Disconnect the lines -1 and 2- on the underbody. Refer to CONNECTOR COUPLINGS, DISCONNECTING .
-- Unclip the bracket -3- on the underbody.
-- Unclip the bracket -3- on the fuel lines.
-- Secure using a pulling aid (for example a cable or string) on the fuel lines.
-- This pulling aid make the reinstallation easier, to do so select enough length.
-- Use adhesive tape to secure the pulling aid.
-- Lower the vehicle with the hoist.
The fuel system is under pressure.
Risk of injury from fuel spraying out.
- Wear protective eyewear.
- Wear safety gloves.
- Reduce the pressure: place clean cloths around the connection point and carefully open the connection point.
-- Remove fuel supply line -1 and 2-. Disconnect the couplings. Refer to CONNECTOR COUPLINGS, DISCONNECTING .
-- Open the bracket for the refrigerant lines on the right wheel housing.
-- Unclip the refrigerant lines. Refer to REFRIGERANT LINE FROM CONDENSER TO EXPANSION VALVE, REMOVING AND INSTALLING .
-- If equipped remove the heat shield -1- from the ABS Hydraulic Unit -N55-.
-- To do so, unclip the heat shield -1- from the bracket -2- -arrow-.
-- Remove the nut -arrow-.
-- Release and unclip the expanding rivet -arrow A-.
-- Unclip the shield -1- from the longitudinal member -2-.
-- If equipped, loosen the clip -4- for the parking/auxiliary heater fuel line -3- from the body.
-- Unclip the bracket -2- for the shield from the longitudinal member.
-- Remove the lines upward.
-- At the same time turn the lines, but do not tear!
-- Unclip the lines and remove the shield upward.
Installing:
-- Remove the pulling aid from the old lines.
-- Pay attention that the plug is seated correctly on the new lines.
-- Seal the lines with suitable plugs from the :VAS6122 .
The fuel and bleeder line for the parking/auxiliary heater are installed together.
Secure the lines for example with adhesive tape.
-- Insert the lines as shown in the shield guide and clip in. Refer to Line Installation Positions on the Shield: .
-- The fuel lines are clipped in at the top of the shield only after guiding them in. Refer to Line Installation Positions on the Shield: .
-- Secure the pulling aid on the fuel lines.
-- Use adhesive tape to secure the pulling aid.
-- Pay attention that the pulling aid is only secured in the front area of the lines.
-- At the bottom seal the shield from the slotted guide with adhesive tape so that the lines do not slide out.
-- Place the fuel lines together with the shield on the opening in the longitudinal member.