Volkswagen Golf Mk7 Service & Repair Manual: Removing and installing coolant pipes at heat exchanger (Denso)

Note: different makes of Volkswagen Golf Mk7 heater/AC unit exist with distinguishing features between them — this page covers removing coolant pipes specifically at the Denso heat exchanger.

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.

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.

–  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“

Questions & answers

Removing and installing coolant pipes at heat exchanger (Denso) — Volkswagen Golf Mk7

How do I remove the Golf Mk7 Denso heat exchanger coolant pipes?

Same principle as Valeo. Different pipe routing and connection types. Drain coolant first.

Removing and installing coolant pipes at heat exchanger (Valeo)

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Other materials:

• Removing and installing condensation drain (RHD)
• Removing and installing evaporator
• Dismantling and assembling heater and air conditioning unit
• Removing and installing heater and air conditioning unit
• Assembly overview - add-on parts of heater and air conditioning unit and of air intake box