| The fuel pressure sender -G247--6-is located in the high-pressure accumulator. It measures the fuel pressure and sends a voltage signal to the control unit for direct diesel injection system -J248-. |
| »Carry out the following work sequence« |
Caution | First read through the rules for cleanliness and the instructions for working on the fuel system. |
| Follow these instructions before starting work and while working on the fuel system. |
|
| –
| Before removal, clean area around thread for fuel pressure sender, using e.g. a cold cleaning solvent. No dirt must enter the bore in the high-pressure accumulator. |
| l
| Under no circumstances may dirt enter the borehole of the fuel distributor. |
| l
| It must be ensured that no cleaning agent gets into the connector housing of the fuel pressure sender -G247-. |
| –
| Dry fuel pressure sender -G247-. |
| –
| Pull electrical connector from fuel pressure sender -G247-. |
Caution | Do not remove fuel pressure sender with open-ended spanner or open ring spanner. Risk of damage! |
| Use an extended socket insert. |
|
| –
| Collect escaping fuel with a cleaning cloth. |
| –
| Unscrew fuel pressure sender -G247-. |
| –
| Use suction device to extract dirt from high-pressure accumulator bore (threads and sealing surface). Do not use metal tools, etc. |
Note | Seal off high-pressure accumulator hole immediately with a suitable plug to prevent dirt from entering. |
Note | t
| Make sure that sealing surfaces (deformable sealing lip) and threads on new fuel pressure sender -G247- are undamaged. |
| t
| Check sealing surface on the borehole of the high-pressure reservoir. |
| t
| The thread on the fuel pressure sender -G247- has a special lubricating coating. The thread must be free of oil and grease. |
Caution | Do not tighten the fuel pressure sender with open-ended spanner or open ring spanner. Risk of damage! |
| Use an extended socket insert. |
|
| –
| Tighten fuel pressure sender -G247- by hand. |
| –
| Then tighten sender. Tightening torque → Item |
| –
| After installing, leave engine running at moderate speed for a few minutes and then switch off again. |
| –
| Then road test the vehicle, accelerating to full throttle at least once. Check high pressure part of fuel system again for leaks. |
|
|
|
