Golf Mk4
| Assembly overview - fuel filter |
| 1 - | Supply line |
| q | From fuel tank. |
| q | White or with white marking. |
| q | Check for secure seating. |
| 2 - | Return line |
| q | To fuel cooler |
| q | Blue or with blue marking. |
| q | Check for secure seating. |
| 3 - | O-ring |
| q | Renew |
| 4 - | Control valve |
| q | Installation position: arrow points towards fuel tank |
| q | When changing filter, remove securing clip and take control valve off complete with fuel lines. |
| q | Below +15 °C: passage to filter open. |
| q | Over +31 °C: passage to filter closed. |
| 5 - | Securing clip |
| q | Check for secure seating. |
| 6 - | Return line |
| q | Check for secure seating. |
| q | From tandem pump → Item |
| 7 - | Supply line |
| q | Check for secure seating. |
| q | To tandem pump → Item |
| 8 - | Fuel filter |
| q | Fill with diesel before installing |
| q | Direction of flow is marked by arrows |
| q | Do not interchange connections |
| q | Renew if damaged. |
| 9 - | Gasket |
| q | Renew if damaged. |
| 10 - | Water drainage plug |
| q | To bleed, remove control valve securing clip and take off control valve complete with fuel lines |
| q | Loosen and allow approx. 100 cm3 fluid to drain |
