Audi Workshop Service and Repair Manuals > A4 Mk3 > Power unit | 4-cylinder TDI engine (2.0 ltr. 4-valve common rail), mechanics | Engine cooling | Parts of cooling system (on engine) | Removing and installing pump for exhaust gas recirculation coolerV400

Removing and installing pump for exhaust gas recirculation coolerV400

Removing and installing pump for exhaust gas recirculation cooler -V400-

Special tools and workshop equipment required

t	Hose clamps for hoses up to 25 mm -3094-

t	Hose clip pliers -V.A.G 1921-

Removing

–	Remove engine cover panel -arrows-.

–	Open hose clips -arrows- and detach air hose.

WARNING

Hot steam/hot coolant can escape - risk of scalding.

The cooling system is under pressure when the engine is hot.

Cover filler cap on coolant expansion tank with a cloth and open carefully to dissipate pressure.

–	Clamp off coolant hoses with hose clamps up to 25 mm -3094- as shown in illustration.

–	Detach coolant hoses -2- and -3-.

–	Unplug electrical connector -4-.

–	Unscrew bolt -1- and remove pump for exhaust gas recirculation cooler -V400- with bracket.

–	Detach pump for exhaust gas recirculation cooler from bracket.

Installing

Install in reverse order. Note the following:

Note

t	Hose connections and air pipes and hoses must be free of oil and grease before assembly.

t	Secure all hose connections with the correct type of hose clips (same as original equipment) → Electronic parts catalogue.

t	To secure the air hoses at their connections, spray rust remover onto the worm thread of the used hose clips before installing.

–	Fill up with coolant → Chapter.

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