Seat Leon >> Removing and installing refrigerant line with internal heat exchanger

SEAT Leon Service and Repair Manual / Heating and air conditioning / Air conditioning system / Refrigerant circuit / Removing and installing refrigerant line with internal heat exchanger

Special tools and workshop equipment required

  • Air conditioner service station
  • Engine bung set - VAS 6122-

Air conditioning system

Removal:

  • Turn off the ignition and all electricity consumers.

Vehicles without access and start authorisation system

  • Remove ignition key, if fitted.

Vehicles with access and start authorisation system

  • Store ignition key outside the vehicle to prevent the ignition from being switched on unintentionally.

Continued for all vehicles

  • Extract refrigerant.
  • Observe instructions when working on refrigerant circuit.

Vehicles with petrol engine:

  • Release hose clips -1- and -2- and remove air intake pipe.

Diesel engine vehicles:

Air conditioning system

  • Press the release buttons at the crankcase breather hose -1- and detach the hose from the cylinder head cover.
  • Lay bare the vacuum hoses at the air pipe -arrows-.
  • Release hose clip -3-.
  • Screw out the bolt -2-, swivel the air pipe with connection to the rear and detach from the turbocharger.

All vehicles (continued):

Air conditioning system

  • Unscrew speed nuts -1- and -3-.
  • Fold the heat shield -2- as far forwards as possible -arrow-.

Air conditioning system

  • Unscrew the bolt -7-.
  • Detach refrigerant line -6- with internal heat exchanger from expansion valve.
  • Unscrew nuts -1- and -3- and remove refrigerant lines -2- and -4-.
  • Take out the refrigerant line -5- with internal heat exchanger to the right.
  • Seal open lines and connections with clean plugs from the Engine sealing plug set - VAS 6122- .

Air conditioning system

Installing

Install in reverse order of removal; note the following.

  • Renew O-rings.
  • Clean the connections at the expansion valve -2- and at the internal heat exchanger -4- and check for damage.
  • Thoroughly clean connection area of refrigerant lines and check for damage.

Note

  • Moisten O-rings with refrigerant oil before installing.
  • Pay attention to correct positioning of the O-rings in the groove of the corresponding refrigerant pipe.

Air conditioning system

  • Insert the O-rings -1, 3- in the groove at the connection of the internal heat exchanger.
  • Insert internal heat exchanger at expansion valve.
  • Tighten bolt -5-.
  • Clean connections on refrigerant lines and check for damage.
  • If applicable, check the fitted pin -4- for damage and correct positioning.
  • Check the guide ring -2- at the refrigerant line connection for damage.

Note

  • Moisten O-rings with refrigerant oil before installing.
  • Pay attention to correct positioning of the O-rings in the groove of the corresponding refrigerant pipe.

 

  • Insert the O-ring -3- in the groove -arrow- at the connection of the refrigerant line -1-.
  • Insert the refrigerant lines in the corresponding connection.
  • Tighten the nuts.

Note Routing and attachment of refrigerant lines.

  • Refill with refrigerant and refrigerant oil.
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    See also:

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