High Pressure Pumps

High Pressure Pumps

Special tools, testers and auxiliary items required

• Torque Wrench (V.A.G 1331)

• SW 17 socket (V.A.G 1331/6)

• SW 14 socket, open ring (V.A.G 1331/8)

Removing

CAUTION!
• Fuel system is under high pressure! Before opening high pressure components of the fuel injection system, pressure must be relieved to residual pressure. Refer to => [ Before Opening High Pressure Fuel Injection System ] Service and Repair.

• Then wrap a clean rag around the connection and relieve residual pressure by carefully loosening the connection.

• Observe safety precautions when disconnecting the battery.

- Disconnect electrical connector - 1 - from respective high pressure pump.

Right high pressure pump





Left high pressure pump





- Remove union nuts - 3 - and - 4 -.

- Remove bolts - 2 -.

• Do not change the angles of the high pressure lines.

- Carefully remove high pressure pump.

- Remove roller tappet from cylinder head.

Installing

Installation is in reverse order of removal, note the following:

Tightening specifications. Refer to => [ High Pressure Pump Assembly Overview ] High Pressure Pump Assembly Overview.

• Always replace O-ring.

- Insert roller tappet in cylinder head.

- To set the high pressure pump in place, lift the high pressure lines only slightly.

- Insert high pressure pump with new O-ring in cylinder head and tighten.

• High pressure line connections must not show any signs of damage.

• Do not change the angles of the high pressure lines.

- Hand-tighten the union nuts for the high-pressure lines.

- Make sure the high-pressure lines are seated free of stress.

- To fasten the SW 14 union nut for high pressure line, use torque wrench (V.A.G 1331) with 17 mm open end wrench socket (V.A.G 1331/8).





- To tighten SW 17 union nut for high pressure line, use the torque wrench (V.A.G 1331) with SW 17 socket (V.A.G 1331/6).