VW Golf manuals

Volkswagen Golf Service & Repair Manual: O-ring

Use only O-rings that are resistant to refrigerant R134a and related refrigerant oils. O-rings are no longer colour-coded. Coloured and black O-rings are used.
Check that the O-rings used have the correct internal diameters.
→ Rep. gr.87
→ Parts catalogue
Never reuse O-rings.
Before installing, moisten O-rings lightly with refrigerant oil (PAG oil).
  Note
When purging components with compressed air and nitrogen, always collect the gas mixture exiting the component with suitable exhaust gas extraction equipment (workshop fume extractor).
After completion of repair work screw sealing caps (with seals) onto valve and service connections.
Before operating the air conditioning system. Check the vehicle-specific charge quantities → Rep. gr.87.
Do not top up a charged refrigerant circuit; discharge refrigerant present and recharge system.
Basics for working on refrigerant circuit
Observe instructions specific to the workplace; → Volkswagen ServiceNet; Handbooks; Service handbook; Environmental protection. Refrigerant from air c ...

Before operating the air conditioning system after recharging with refrigerant
After installing a new air conditioner compressor or filling with fresh refrigerant oil (e.g. after blowing out refrigerant circuit), turn compressor pulley 10 r ...

Other materials:

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. –  ...

Removing and installing brake caliper
Special tools and workshop equipment required Vehicle diagnosis, testing and information system -VAS 5051- Tool set for brake bleeding -VAS 6564- Insert tool with ratchet -VAS 6784- Bit attachment (7 mm) -T10503- ...

Removing and installing camshaft housing
Removing –  Remove coolant pump → Chapter. –  Remove air filter housing → Chapter. –  Remove ignition coils → Chapter. ...

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