seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

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Installing > < Removing and installing heat exchanger

Leon Mk2

Removing
Removing
–  Disconnect battery → Electrical system; Rep. gr.27.
–  Remove knee airbag → General body repairs, interior; Rep. gr.69.
  WARNING
Observe the general safety regulations when working on the airbag, belt tensioner and battery isolator units (pyrotechnical components) → Rep. gr.69.
–  Remove footwell vent on driver side → Chapter.
  Note
t  The coolant circuit must be bled after it is opened → Rep. gr.19.
t  Cooling system is pressurized when engine is warm. If necessary, release pressure before carrying out repairs.
–  Place drip tray -VAS 6208- beneath engine.
–  Drain coolant circuit → Power unit; Rep. gr.19.
–  Mark coolant hoses -1- to heater and air conditioning unit.
  WARNING
Danger of scalding injuries.
When the engine is warm, the coolant temperature may be above 100 °C. The cooling system is pressurised.
If necessary, release pressure and reduce temperature before carrying out repairs.
   
–  Clamp off coolant hoses to heat exchanger -1- of heater and air conditioning unit (e.g. with hose clamps to 25 mm Ø -3094-) and disconnect them.
  N80-10016
–  Push a piece of hose -A- and -B- onto both connections to heat exchanger.
–  Hold a container -C- under hose from lower connection -B-.
–  Using a compressed air gun -D-, carefully blow coolant out of heat exchanger into container -C- via hose -A-.
–  Pull interior carpet away from centre tunnel in left-hand area.
–  Mark installation position of positioner -1- to heater and air conditioning unit -2-.
  A87-10233
–  Pull positioner -1- out of heater and air conditioning unit -2-.
  N80-10314
–  Remove heat exchanger cover -1-, undo bolts -arrows- for this.
–  Cover carpet in area under heat exchanger with waterproof foil and water absorbing paper.
  WARNING
Danger of scalding injuries.
The cooling system is pressurised. When the engine is warm, the coolant temperature may be above 100 °C.
If necessary, release pressure and reduce temperature before carrying out repairs.
  N80-10315
–  Undo bolts (2 Nm) -arrows- from clamps -1- of coolant lines.
–  Slowly pull coolant lines out of heat exchanger and collect coolant that leaks out in a container.
–  Pull heat exchanger from heater and air conditioning unit.
  N80-10316

Installing > < Removing and installing heat exchanger