High Pressure Pump

High Pressure Pump

Special tools, testers and auxiliary items required

• Puller (T40064)

• Locking Tool (T40135)

• Follow the guidelines for a clean working environment when working on the fuel system. Refer to => [ Clean Working Conditions ] Clean Working Conditions.

• Always follow these rules before and during work.

• Stop the high pressure pump toothed belt using the (T40135) before installing the toothed belt. (Do not allow the toothed belt to swing!)

• The high pressure pump must be filled with fuel before starting the engine for the first time. Refer to => [ Fuel Tank, Filling with Fuel after Installing High Pressure Pump ] General Information. (Never let the high pressure pump run dry).

Removing

- Remove the intake manifold upper section. Refer to => [ Upper Intake Manifold ] Upper Intake Manifold.

- Remove the high pressure pump toothed belt. Refer to => [ High Pressure Pump Toothed Belt ] High Pressure Pump Toothed Belt.

- Remove the bolts - arrows - and the high pressure line protective plate.






- Remove the union nuts - 1 through 4 - and free up the high pressure lines.

- Disconnect the connector - 3 -.






- Remove the fuel supply hose - 1 - and return hose - 2 -.

- Remove the bolts - arrows - and remove the high pressure pump.

Installing

Install in reverse order, paying attention to the following:

• Replace the gaskets and seals.

• The fuel return lines must not be bent, damaged or plugged.

• If the toothed belt sprocket needs to be replaced, remove the high pressure pump toothed belt sprocket using the (T40064).






• Stop the high pressure pump toothed belt using the (T40135) before installing the toothed belt. (Do not allow the toothed belt to swing!)






• Align the 2 Top Dead Center (TDC) points with each other in order correctly adjust the high pressure pump toothed belt.

• TDC in the crankshaft - 1 -






• TDC in the camshaft - arrow -






• Tightening specifications: High pressure pump assembly overview, refer to => [ High Pressure Pump Overview ] Service and Repair

- Install the high pressure pump toothed belt. Refer to => [ High Pressure Pump Toothed Belt ] High Pressure Pump Toothed Belt.

- High pressure lines, installing. Refer to => [ High Pressure Lines, Installing ] High Pressure Lines, Installing.

- Install the upper section of the intake manifold. Refer to => [ Upper Intake Manifold ] Upper Intake Manifold.

• The high pressure pump must be filled with fuel before starting the engine for the first time. Do not let the high pressure pump run dry. First fuel filling, refer to => [ Fuel Tank, Filling with Fuel after Installing High Pressure Pump ] General Information.

• Letting the high pressure pump run dry will destroy it.

Perform an adaptation after replacing the high pressure pump and / or the fuel pressure regulator valve (N276). Use a vehicle diagnosis tester.