Volkswagen Golf Service & Repair Manual: Refrigerant circuit with restrictor and reservoir

Refrigerant circuit with expansion valve and evaporator

1 -  Evaporator 2 -  Expansion valve 3 -  Valve for extracting, charging and measuring ...

Evacuation and charging valves for quick-release couplings of air conditioner service station on refrigerant circuit

Special tools and workshop equipment required Torque wrench -V.A.G 1783- (2…10 Nm) with 1/4" ratchet adapter -VAS 6234- ...

Other materials:

Lowering rear axle, multi-link suspension, front-wheel drive, except for e-Golf
Special tools and workshop equipment required Assembly tool -3301- Assembly tool -3346- Torque wrench -V.A.G 1332- Engine and gearbox jack -V.A.G 1383 A-   Lower subframe ...

Without roller dynamometer for four-wheel drive vehicles
  Note If no test rig is available for four-wheel drive vehicles, the brake test can also be carried out on a standard single-axle roller dynamometer as follows: –  Drive vehicle forwards onto the rollers. ...

Detecting leaks
External damage can cause leaks in the refrigerant circuit. Because a small leak will involve only small quantities of refrigerant, leaks should be checked for using an electronic leak detector or by introducing a leak detection additive to the refrigerant circuit. Electronic leak detectors ca ...