Volkswagen Workshop Service and Repair Manuals

• Return pipe
• ◆ To fuel cooler
  
• ◆ Blue or with blue marking
• ◆ Check securely seated
• Supply pipe
• ◆ From fuel tank
  => Page 20-6
• ◆ White or with white marking
• ◆ Check securely seated
• Securing clip

• Control valve
• ◆ Installation position: arrow points towards fuel tank
• ◆ When changing filter, remove securing clip and take control valve off complete with fuel pipes
• ◆ Below + 15 °C:
  Passageway to filter open
• ◆ Over + 31 °C:
  Passageway to filter closed
• O-ring
• ◆ Renew
• Return pipe
• ◆ From tandem pump
  => Page 13-7
• ◆ Check securely seated
• ◆ Blue or with blue marking
• Fuel pipe

• Fuel temperature sender (G81)
• ◆ Checking:

=> Repair group 23; Servicing Diesel direct injection system; Checking fuel temperature sender

• Non-return valve
• ◆ Installation position: Arrow points towards tandem pump
• Supply pipe
• ◆ To tandem pump
  => Page 13-7
• ◆ Check securely seated
• ◆ White or with white marking
• Fuel filter
• ◆ Fill with diesel before installing
• ◆ Flow direction is marked by an arrow
• ◆ Do not interchange connections
• ◆ Renew if damaged

• Gasket
• ◆ Renew if damaged
• Water drain plug
• ◆ To bleed remove securing clip and take control valve off complete with fuel pipes attached
• ◆ Loosen and allow approx. 100 cm3 fluid to drain