VW Golf manuals

Volkswagen Golf Service & Repair Manual: Removing and installing refrigerant shut-off valve for high-voltage battery heat exchanger -N542

Volkswagen Golf Service & Repair Manual / Heating, air conditioning / Air conditioner / Refrigerant circuit / Removing and installing refrigerant shut-off valve for high-voltage battery heat exchanger -N542

Removing
–  Observe safety precautions → Chapter „Safety precautions when handling refrigerants“.
–  Comply with notes → Chapter „Working on refrigerant circuit“.
–  Observe safety precautions when working in the vicinity of high-voltage components → Chapter „Safety precautions when working in the vicinity of high-voltage components“.
–  Observe the risk category of the high-voltage system → Rep. gr.00.
–  Switch off ignition.
–  Drain refrigerant circuit.
Risk of freezing injury caused by escaping pressurised refrigerant.There is a risk of injury to the skin and parts of the body due to freezing.Always wear safety gloves.Always wear safety goggles.Extract refrigerant, and open the refrigerant circuit immediately afterwards.If more than 10 minutes passed since the refrigerant has been extracted, do not open the refrigerant circuit prior to extracting refrigerant anew. Due to re-evaporation, pressure will be built up in the refrigerant circuit.
   
–  Disconnect connector -A- from -N542--B-.
–  Loosen union nuts -C-. Counterhold on -N542--B- while doing so.
–  Remove refrigerant line -D- from heat exchanger for high-voltage battery → Chapter.
 

Removing and installing refrigerant shut-off valve for high-voltage battery heat exchanger -N542

–  Remove shut-off valve -N542--D-.
Installing
Installation is carried out in the reverse order. When installing, note the following.
  Note
Adhere to the installation instruction for seals -B- → Chapter.
Following attachment, check the routing of the refrigerant lines. They must be inserted in the holders provided and not make contact with other components.
–  Renew seals -B-; for correct version refer to → Electronic Parts Catalogue.
 

Removing and installing refrigerant shut-off valve for high-voltage battery heat exchanger -N542

–  Check restrictor in refrigerant line -D- (leading to heat exchanger for high-voltage battery) for soiling → Chapter.
–  Screw on union nuts -C- to stop by hand.
–  Install refrigerant line -D- to heat exchanger for high-voltage battery → Chapter.
–  Tighten union nuts -C-. Counterhold on -N542--B- while doing so, and make sure that refrigerant lines are routed free of stress.
  Note
When tightening the union nuts, make sure that the refrigerant lines remain free of stress.
Following attachment, check the routing of the refrigerant lines. They must be inserted in the holders provided and not make contact with other components.
Also refer to the notes on commissioning of air conditioning system after filling → Air conditioning system with refrigerant R134a; Rep. gr.00.
–  Evacuate and charge refrigerant circuit → Air conditioner with refrigerant R134a; Rep. gr.00.
–  Switch on ignition.
–  Read event memory of operating unit, Climatronic control unit -J255-, and clear any faults which may have been stored vehicle diagnostic tester in “Guided fault finding” mode.
Specified torque
 

Removing and installing refrigerant shut-off valve for high-voltage battery heat exchanger -N542

Component Specified torque
Union nuts -C- 16.5 Nm
Removing and installing refrigerant shut-off valve for heater and air conditioner unit -N541
Removing –  Observe safety precautions → Chapter „Safety precautions when handling refrigerants“. ...

Removing and installing heat exchanger for high-voltage battery
Special tools and workshop equipment required Hose clamps, up to 25 mm -3094- Engine bung set -VAS 6122- ...

Other materials:

General information
Fig. 155 In the tailgate: location of the camera for the reverse assist system (Rear Assist) Fig. 156 Reverse assist system display First read and observe the introductory information and safety warnings  Function Action in vehicles without the ParkPilot o ...

Removing and installing brake system pressure accumulator -VX70-, LHD vehicles
Special tools and workshop equipment required     Torque wrench -V.A.G 1331-   Torque wrench -V.A.G 1410- ...

Removing and installing front air distribution flap actuation unit, heater and air conditioning system with electric/manual controls, LHD vehicles
Removing –  Remove dash panel → General body repairs, interior; Rep. gr.70. –  Remove the air duct for the defroster vent → Chapter. –  ...

© 2016-2019 Copyright www.vwgolf.org