13 53 205 Removing and Installing/Replacing Left Rail

13 53 205 Removing and Installing/Replacing Left Rail (N74)







WARNING:
Electric fuel pump starts up automatically when door is opened.
Observe warning on cylinder head cover.
Disconnect battery negative 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 velocity when the high-pressure line is released.







IMPORTANT:
Adhere to conditions of absolute cleanliness when working on the high-pressure fuel system.
Introduced contaminants 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 before removing pipes or individual components.
- Use only fluff-free cloths.
- Seal all fuel system openings with protective caps or plugs.







Recycling
Fuel escapes when fuel line is detached. Catch and dispose of escaping fuel.
Observe country-specific waste-disposal regulations.







Necessary preliminary tasks:
- Remove pressure lines to injectors on left.
- Remove pressure line from high-pressure pump to rail on left.







Release screws (1).
Tightening torque 13 53 1AZ.
Unlock plug (2) on high-pressure sensor and disconnect.
Remove rail (3).







NOTE:
Assemble engine
Check fuel system for leaks.
Delete fault memory.