13 53 205 Removing and Installing/Replacing Left Rail

13 53 205 Removing And Installing/replacing Left Rail (N63, S63)







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.







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:
- Read out fault memory of DME control unit. If necessary, work through test schedules.
- Turn off ignition
- Remove fuel feed line
- Disconnect all pressure lines on left side







Unlock plug (1) on high-pressure sensor and disconnect.

Unfasten screws (2).

Tightening torque 13 53 1AZ.

Remove rail (3).







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