High Pressure Pump

High Pressure Pump

Removing

• Always follow the safety precautions when reducing the high side fuel pressure. Refer to => [ Safety Precautions ] Safety Precautions.

• Do not disassemble the high pressure pump!

• Read the safety precautions before starting. Refer to => [ Fuel System ] Fuel System.

• Follow the guidelines for clean working conditions. Refer to => [ Clean Working Conditions ] Clean Working Conditions.

- Release the tabs on the side and remove the cover - 1 - from the air duct.






- Unclip the air duct - 2 -.

- Remove the bolt - A -, disconnect the connector - B -, loosen the spring clamp - C - and remove the air filter housing and connecting pipe. Pay attention to the mark - D - when installing.






- Remove the air duct bolts - arrows - and duct from the lock carrier.






- Remove the lifting eye bolts - arrows - and lifting eye - A -.






The fuel lines are under pressure.

Danger of personal injury to eyes and skin.

Wear protective eyewear and protective clothing in order to avoid injury and contact with the skin. Wrap a cloth around the connection before removing a fuel hose. Open the connection carefully and release the pressure.

- Remove the low pressure hose - 1 -. Remove the high pressure pipe - 2 - using the flare nut attachment 17 mm (T10456). When doing this, counter hold the connection on the high pressure pump with a wrench.






• The low pressure hose must always be replaced because it is damaged when it is removed from the ridged connections.

- Disconnect the connector - A -, remove the bolts - arrows - and remove the high pressure pump - B - from the engine.






Installing






- Check the cam follower - 1 - for damage and replace if necessary. Lubricate the cam follower and insert it correctly with the guide - 2 - into the cylinder head.

- Slowly rotate the engine using the vibration damper in engine rotation direction. When doing this, press the cam follower in the - direction of the arrow - until it reaches the deepest point in the cylinder head.

- Replace the O-ring for the high pressure pump and coat it lightly with clean motor oil.

- Install the high pressure pump and tighten the bolts - arrows - evenly. For the tightening specification, see - item 7 - in the => [ High Pressure Pump Overview ] High Pressure Pump Overview.






- Tighten the connection for the high pressure pipe and low pressure hose at the high pressure pump.

Connection for high pressure pipe: 40 Nm

Connection for low pressure hose: 28 Nm

• The low pressure hose must always be replaced because it is damaged when it is removed from the ridged connections.

• The low pressure hose and high pressure pipe must not touch after being tightened. Ensure sufficient "spacing".

- Install the new low pressure hose - A -. Pay attention to the installation marks and position of the spring clamps - arrows -.






- Install the high pressure pipe and tighten by hand.

- Evenly tighten the high pressure pipe - A - using the flare nut attachment 17 mm (T10456) while counter holding the high pressure pipe in the - direction of the arrow -. The high pressure pipe - A - and low pressure hose - B - must not touch after being tightened.






• Tightening specification: 28 Nm

Install the engine lifting eye.