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

Volkswagen Golf Service & Repair Manual / Heating, air conditioning / Air conditioner / Coolant circuit / Removing and installing coolant valve for high-voltage battery -N688-

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-

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- ...

Other materials:

Rules for cleanliness
When working on the fuel supply and injection system, observe the following “5 rules” for cleanliness: Thoroughly clean all unions and surrounding areas before disconnecting. Place removed parts on a clea ...

Checking colour indicator, “3-colour”
WARNING Danger of injury! Observe warning notices and safety regulations → Chapter! General information about colour indicator: Applies fo ...

Totally discharged batteries
WARNING Danger of injury! Observe warning notices and safety regulations → Chapter! A battery is designated “totally discharged” when the no-load volta ...