VW Golf manuals

Volkswagen Golf Service & Repair Manual: Removing and installing coolant pipes at heat exchanger (Denso)

  Note
There are different designs and makes of heater and air conditioning unit. The individual components of the various heaters and air conditioning units are similar but not identical (distinguishing features → Chapter). The combined fitting of different makes of component is therefore not permissible → Electronic Parts Catalogue.
   
Removing
–  Remove heater and air conditioner unit → Chapter.
–  Detach the sealing collar -3- to the plenum chamber bulkhead.
–  Remove bolt -2-.
–  Detach the coolant pipe holder -4- to the left.
–  Detach the foam -1-.
–  Screw out the bolts -5- and detach the screw-type clamps -6-.
–  Pull coolant pipes -7- and -8- off heat exchanger.
 

Removing and installing coolant pipes at heat exchanger (Denso)

Installing
Installation is carried out in the reverse order. When installing, note the following:
–  Check connection -3- of the heat exchanger and the connection of the coolant pipes -1- for damage or dirt.
–  Clean and smoothen sealing surface for seals.
–  Moisten new seals -2- with coolant (or lubricate lightly with silicone grease) and fit them to coolant pipe -1-.
–  Push coolant pipes into heat exchanger as far as stop.
Risk of malfunction on heat exchanger due to defective seals and leaks.Never squeeze seals.Never cant coolant pipes.Slide on coolant pipes completely.
 

Removing and installing coolant pipes at heat exchanger (Denso)

–  Fit new screw-type clamps -2- at the coolant pipe/heat exchanger joint.
–  Tighten bolt -1-.
–  Check screw-type clips -2- for proper seating on connections of heat exchanger and check coolant pipes. The coolant pipes must not rest against air distribution housing or any other components.
–  Install heater and air conditioning unit → Chapter.
–  Read event memory, and clear any entries displayed vehicle diagnostic tester in “Guided fault finding” mode.
–  As a final step, check operation of heater and air conditioning system.
Specified torques:
→ Chapter „Assembly overview - heater and air conditioning unit“
 

Removing and installing coolant pipes at heat exchanger (Denso)

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