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Home >> Audi >> 2008 >> Q7 4.2 >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (3.0L - Fuel Supply System - Engine Code(S): CATA & CNRB) >> 20 Fuel Supply >> Fuel Cooler >> Fuel Cooler, Removing And Installing >> Removing

Fuel Cooler, Removing And Installing: Removing

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Follow the guidelines for clean working conditions, refer to CLEAN WORKING CONDITIONS .

WARNING:

Risk of scalding due to hot steam and hot coolant.

  • The coolant system is under pressure when the engine is warm.
  • Cover the coolant reservoir cap with a cloth and then open it slowly to release the pressure.

-- Open the cap on the coolant reservoir.

-- Remove the fuel filter from the bracket, the fuel hoses remain connected to the fuel filter:

-- Place a clean cloth under the separating location to catch any fuel that may leak out.

WARNING:

Very hot fuel can burn your skin.

  • In extreme cases, the fuel lines and the fuel itself in vehicles with a common rail engine can be as hot as 100 °C (212 °F) after the engine has been turned off. Let the fuel cool down before opening any line connections otherwise there is a danger of scalding.
  • Wear safety gloves
  • Wear protective eyewear.

There is a risk of injury because the fuel is under pressure.

  • To reduce pressure in fuel system, lay a clean cloth around the connector and carefully loosen connector.

-- Remove the fuel return hose -3- from the fuel cooler and the fuel filter with the hoses still connected and lay them to the side.

Fig 1: Identifying Coolant Hoses -1 To 2-, Bolt -5, Fuel Cooler -4-, And Fuel Return Hose -6-
GWWA20-10501Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the coolant hoses -1 and 2- with the Hose Clamps - Up To 25mm3094 and remove them from the fuel cooler.

-- Remove the fuel return hose -6- from the fuel cooler.

-- Remove the bolt -5- and the fuel cooler -4-.