Audi A4 Owners & Service Manuals

Audi A4: Commercially Available Tools and Materials

Fin comb


Fill hoses

5/8"-18 UNF thread


  • Use differently colored charging hoses (1800 mm long).
  • Have valve opener and spare seals to hand.
  • A charging hose in short version is also included in Refrigerant Circuits Adapter Set 1 -VAS6338/1-.


Connection piece for refrigerant cylinder with seal, quick-release coupling connection or threaded connection 5/8" - 18 UNF


Valve caps with spare seals (for 5/8"-18 UNF thread)

Seals can also be used for charging hoses.


Valve caps with spare seals are also included in Refrigerant Circuits Adapter Set 1 -VAS6338/1-.


Pressure gauge set with pressure reducer for nitrogen (max. reducing pressure: 15 bar (218 psi) )


1 - Pressure gauge set

2 - Pressure hose (inner diameter 5 mm, length 2 m)

3 - Nitrogen

4 - Hose fitting


For connection to A/C Adapter Set -VAG1785- with 5/8"-18 UNF thread

Quick-release coupling adapter for service connections


  • High-pressure side, nominal size 16 mm
  • Low-pressure side, nominal size 13 mm
  • 2x release tool (Sharan)


This quick-release coupling is delivered with the service station.

Improvised Tools

Charging hose with connection for workshop compressed-air system


A - Charging hose 5/8" - 18 UNF** (version with large inner diameter)

B - Connection for workshop compressed-air system ** (always use filter)

Revision History

DRUCK NUMBER: A0053300221

Revision History



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     General, Technical data

    Repair Information General Repair Information Using the Repair Manual Refer to the "7-Speed DSG Transmission 0CK" repair manual for all special procedures with the transmission installed, depending


     Operating in the cockpit

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     Driver and Front Passenger Seat Heating Element -Z6-/-Z8-, Removing and Installing

    Seat Heating Element, Removing and Installing, Seat Cushion Procedure - Separate the cover and cushion. Refer to → Chapter "Seat Pan Cover and Cushion, Separating". - Clip the wires directly at the heating elements.   Note The old heating elements remain on the cushion and wi

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