Attention! Risk of injury from high pressure fuel. Before opening the high pressure circuit of the injection system, the fuel pressure must be reduced to residual pressure. Dirt can cause problems.
Remove the high pressure pipe. Disconnect connector -1-. Loosen clamp -2- and disconnect fuel pressure line. Remove screws -3- and remove high-pressure pump with roller tappet.
Installation
Check roller tappet for damage, replace if necessary. Coat roller tappet -1- with a thin film of clean engine oil. Install lubricated roller tappet -1- into camshaft housing.
Note: Replace sealing ring.
Rotate the crankshaft in the operating direction until the roller tappet is at its lowest point. Install a new oiled O-ring -2- in the groove of the high pressure pump -3-.
High Pressure Pump - Torque and Tightening Order
To prevent the flange of the high pressure pump from being deformed during installation, install the high pressure pump as follows. Tighten the screws in stages as follows.
Check the tightness of the power system.