Removing and installing/replacing feed line (S55 engine)
Special tools required:
- 13 5 020
- 32 1 270
- 13 5 160
Electric fuel pump starts up automatically when door is opened!
Carry out installation work on fuel system only with coolant temperature below 40°C.
Wear safety goggles.
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 lines or separate components.
- Use only fluff-free cloths.
- Seal all fuel system openings with protective caps or plugs.
The resistance of the silicone material is reduced significantly by contact with fuel, which may cause the ignition coil to fail!
Cover ignition coil with suitable means.
Recycling:
Fuel escapes when fuel lines are detached.
Catch and dispose of escaping fuel in a suitable container.
Observe country-specific waste disposal regulations.
Necessary preliminary tasks:
- Remove INTAKE PLENUM .
Removal:
Release screws (1) below cable channel.
Unlock the lock (1) of the feed line.
Close off fuel hose with special tool (1) 13 5 160.
Release nut (1) of the feed line to the duo high pressure pump.
Close off feed line and high pressure pump with a matching plug from set of special tools 32 1 270.
Unlock connector (2) on the low pressure sensor and pull off.
Remove feed lines.
Installation note:
Adhere to tightening/torque sequence.
First, fit feed line on high pressure pump and engine block only hand-tight . Do not connect fuel hose to the feed line yet.
Installation:
Tighten screws (1) below the cable channel.
Tightening torque 13 62 6AZ .
Replace aluminium screws.
Tighten union nut (1) with special tool 13 5 020.
Tightening torque 13 53 7AZ .
Reconnect connector (2) to the low pressure sensor.
Connector (2) must snap audibly into place.
Unlock the lock (1) of the feed line.
Lock (1) must snap audibly into place.
Required follow-up work:
- Install INTAKE PLENUM .
Assemble engine.
Check fuel system for tightness.
Check function of DME.