13 53 180 Replacing Pressure Line

13 53 180 Replacing pressure line (N18)

Special tools required:







WARNING:
Disconnect negative battery terminal (risk of fire due to short-circuiting on removal)
Carry out installation work on fuel system only with coolant temperature below 40 °C.







IMPORTANT:
Wear full face guard and protective gloves.
Fuel can emerge spontaneously at high speed when the high pressure line is released.







IMPORTANT:
Adhere to conditions of absolute cleanliness when working on the high-pressure fuel system.
Introduced dirt contamination can cause malfunctions in the system.
- Do not allow any dirt particles or foreign bodies to get into the system.
- Remove all traces of dirt contamination before removing lines or separate components.
- Use only fluff-free cloths.
- Seal all fuel system openings with protective caps or plugs.







Necessary preliminary work:
- Remove intake filter housing.







Recycling:
Fuel escapes when fuel lines are detached.
Catch and dispose of escaping fuel.
Observe country-specific waste disposal regulations.







NOTE: Hold the connection piece with an open-ended spanner (2) while releasing pressure line (1).







Removal:
Slacken nut (1).
Unscrew nut (3).
Disconnect pressure line (2).







Seal high-pressure rail and high-pressure pump with fitting plugs (1) from special tool kit 32 1 270.







Installation of pressure line is described separately from removal.
Hold the connection piece with an open-ended spanner (2) while tightening pressure line (1).







Installation note: The procedure described below must be followed precisely (to avoid leaks):
1. Pre-install new pressure line (2), only hand-tighten nuts (3 and 1).
2. When tightening screw connections, first tighten nut (1) and then nut (3).
3. Tighten nuts (1 and 3) according to tightening specifications 13 53 1AZ.
4. Check fuel system for tightness.







Assemble engine.
Check function of DME.