11 72 052 Removing and installing / replacing non-return valve (cylinder bank 1-6) (M73)

Compress retainer (2) and push off connector (1).

Fig 1: Compressing Retainer And Push Off Connector

Open clips (1).

Unfasten hose clip (2) from inlet hose for air pump. Remove hose.

Disconnect plug connection (3).

Unfasten hose clip (4).

Remove complete top right section of intake filter housing.

Fig 2: Disconnecting Plug Connection

Unclip and remove oil drip tray.

Fig 3: Removing Fan Coupling With Fan Wheel

Non-return valve for cylinder bank 1 to 6
Non-return valve for cylinder bank 7 to 12

Fig 4: Identifying Non-Return Valve For Cylinder Bank

Unfasten hose clip (1) to non-return valve for cylinder bank 7 to 12 and remove pressure hose.

Fig 5: Unfastening Hose Clip To Non-Return Valve For Cylinder Bank

Unfasten hose clip on non-return valve for cylinder bank 1 to 6 and remove pressure hose.

Fig 6: Unfastening Hose Clip On Non-Return Valve For Cylinder Bank

Unclip bracket (1) for coolant vent hose.

Fig 7: Removing Bracket For Coolant Vent Hose

Unfasten screws in non-return valve (1) for cylinders 1 to 6 to pressure pipe (2) and remove non-return valve.

Installation:

Replace gasket.

Fig 8: Removing Screws In Non-Return Valve For Cylinders To Pressure Pipe

Unfasten hose clip on pressure pipe for air pump. Remove hose.

Fig 9: Unfastening Hose Clip On Pressure Pipe For Air Pump

Unfasten pressure pipe (1) from brackets and remove.

Fig 10: Unfastening Pressure Pipe From Brackets

Installation:

The spacer disc (2) must be fitted under the bracket (1) to the water pump to prevent the pressure pipe from being subjected to tension.

Fig 11: Installing Spacer Disc Must Be Fitted Under Bracket Water Pump