Volkswagen Golf Service & Repair Manual: Distribution of the refrigerant circuit components and their influence on
the high-pressure and low-pressure sides
| On the high-pressure side, there are the condenser, the
receiver and the restrictor or expansion valve that acts as the
separation between the high-pressure fluid and low-pressure
fluid sides. |
| High pressure is created because the restrictor or expansion
valve forms a restriction and holds back the refrigerant,
leading to increased pressure and temperature. |
| Excessive pressure results if the circuit is filled with too
much refrigerant or refrigerant oil, or the condenser is dirty,
the radiator fan is defective, there is a blockage in the system
or there is moisture in the refrigerant circuit (causing the
restrictor or expansion valve to ice up). |
| On the low-pressure side, there are the evaporator, the
reservoir, the temperature sensor for the evaporator and the air
conditioner compressor that acts as the separation between the
high-pressure and low-pressure gas sides. |
| A loss of pressure in the system can be due to loss of
refrigerant, restrictor or expansion valve failure (not creating
a restriction), defective air conditioner compressor or an
iced-up evaporator. |
|
|
|
Caution
Non-authorised tools or materials (e.g. leak
inhibitor additive) may cause damage or adversely
influence t ...
The air conditioner compressor is driven by a V-belt from
the engine.
An electromagnetic clutch is fitted to the air conditioner
compressor. Wh ...
Other materials:
General repair instructions
–
→ Chapter „Safety precautions when working on high-voltage
system“ Comply with notes.
–
Read self-diagnosis of auxiliary heater using vehicle
diagnostic tester.
–
...
Assembly overview – underbody covers, e-Golf
1 -
Noise insulation
Removing and installing
2 -
Front underbody cover
Removing and installing
→ Chapter
3 -
Centre underbody cover
Left and right
Removing and installing
→& ...
Overview of fitting locations – control units, front of RHD vehicles
1 -
Headlight range control unit -J431-/control unit for cornering light
and headlight range control -J745-
Assembly overview
→ Chapter
2 -
Interface for entry and start system -J965-
Assembly ...
© 2016-2024 Copyright www.vwgolf.org
Refrigerant circuit components
Air conditioning system compressor with magnetic clutch