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Volkswagen Golf Mk7 Service & Repair Manual: Removing and installing coolant valve for high-voltage battery -N688-

Using hose clamps -3094- and hose clip pliers -VAS 6362-, this page covers removing the e-Golf/ GTE HV battery coolant valve -N688- — observing cooling system safety precautions first.

Special tools and workshop equipment required
   
Hose clamps, up to 25 mm -3094-
 

Removing and installing coolant valve for high-voltage battery -N688-

Hose clip pliers -VAS 6362-
Removing
 

Removing and installing coolant valve for high-voltage battery -N688-

–  Observe safety precautions → Chapter „Safety precautions when working on the cooling system“.
–  Disconnect electrical connector -2-.
  Note
Place a cloth underneath to absorb escaping coolant.
–  Unscrew bolts -arrows-.
When the engine is warm, the cooling system is under pressure. Danger of scalding due to steam and hot coolant. There is a risk of injury to the skin and parts of the body due to scalding.Always wear safety gloves.Always wear safety goggles.Proceed as follows to release the pressure: cover the cap of the coolant expansion tank with a cloth, and open it carefully.
–  Clamp off coolant hoses using hose clamps -3094-, and remove coolant hoses. To do this, release hose clips -3-.
–  Remove coolant valve for high-voltage battery -N688-.
Installing
Installation is carried out in the reverse order. When installing, note the following:
  Note
Secure hose connections with hose clips corresponding to the standard version of the equipment → Electronic Parts Catalogue.
–  Check coolant level → Rep. gr.19.
Specified torques
Assembly overview - coolant valves → Rep. gr.19.
 

Removing and installing coolant valve for high-voltage battery -N688-

    Questions & answers

    Removing and installing coolant valve for high-voltage battery -N688- — Volkswagen Golf Mk7

    How do I remove the Golf Mk7 HV battery coolant valve -N688-?
    Use hose clamps -3094- and hose clip pliers. Drain coolant, disconnect hoses and electrical connector, unbolt and remove.
    Incorporation of heat exchanger for high-voltage battery into coolant circuit of high-voltage system
      Note Fill coolant and bleed coolant circuit → Rep. gr.19. The illustration below shows only some of the compone ...

    Removing and installing coolant pump for high-voltage battery -V590-
    Special tools and workshop equipment required     Hose clamps, up to 25 mm -3094-   ...

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