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Checking charge air system for leaks > < Removing and installing charge pressure senderG31 / intake air temperature senderG42

A3 Mk2

Removing and installing charge air cooler
Removing and installing charge air cooler
   
Removing
–  Remove radiator → Chapter.
–  Remove bumper cover (front) → Rep. gr.63.
–  Unbolt air ducts on left and right sides of charge air cooler.
–  Release hose clip -2-, lift retaining clip -1- slightly and remove air hose.
  A21-10336
  WARNING
Risk of injury caused by refrigerant.
The air conditioner refrigerant circuit must not be opened.
  Caution
Make sure that condenser and refrigerant pipes and hoses are not damaged.
Do NOT stretch, kink or bend refrigerant lines and hoses.
–  Remove bolts -1- for charge air cooler and -2- for condenser.
–  Pivot charge air cooler slightly to the rear, disengage from mountings by pulling upwards, and take out from below.
Installing
Installation is carried out in the reverse order; note the following:
l  Tightening torques → Chapter „Charge air cooler - exploded view“
  Note
t  If there are slight impressions on the fins, refer to → Chapter.
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 ensure that the air hoses can be properly secured at their connections, spray rust remover onto the worm thread of used hose clips before installing.
–  Install condenser → Rep. gr.87.
–  Install bumper cover (front) → Rep. gr.63.
–  Install air hose with plug-in connector → Fig..
–  Install radiator → Chapter.
  A19-0474

Checking charge air system for leaks > < Removing and installing charge pressure senderG31 / intake air temperature senderG42