Volkswagen Golf Service & Repair Manual: Searching for leaks in refrigerant circuits using leak detector -V.A.G 1796
 Note
| Small leaks can be detected with, for example, an electronic
leak detector. |
| – |
Evacuate refrigerant circuit using an air conditioner
service station
→ Chapter. |
Note
| If a larger leak is detected during the evacuation process,
determine cause and rectify as described
→ Chapter. |
| If during the evacuation process no leak is detected or a
very small leak is detected that but cannot be located, proceed
as follows
→ Chapter. |
| Refrigerant gas is quickly dispersed by air motion.
Therefore drafts must be avoided during a search for leaks. |
| If the refrigerant circuit is completely empty, charge with
about 10% of refrigerant capacity (sticker R134a or
vehicle-specific workshop manual). |
| – |
Prepare leak detector for operation according to its
operating instructions. |
| – |
Always hold probe tip under location of suspected leak. |
|
|
|
| If the rate of clicks rises or a howl occurs, depending on
model, a leak has been found (see operating instructions for
leak detector). |
|
|
 |
Note
A leak in the refrigerant circuit can be detected, for
example, by pressurising the circuit to a maximum of 15 bar
using cleaned and dr ...
Note
Small leaks can be detected with, for example, an UV leak
detector additive.
–
Evacuate refrigerant circuit using a ...
Other materials:
Product characteristics
Refrigerants used in car air conditioning systems belong to
the new generation of refrigerants, the chlorine-free,
partially-fluoridated hydrocarbons (H-CFC, R134a).
In regard to their physical behaviour, they are refrigerants
which can ...
Converting R12 refrigerant circuits to R134a refrigerant circuits and
repairing them (retrofitting)
Note
The laws and regulations listed below are valid in the
Federal Republic of Germany. Other or additional laws and
regulations may apply in other countries.
Sources in other countries may be obtained from the
...
Renewing LSU Lambda probe (6-pin)
Note
If necessary, replace attachment parts, cable ties or
marking rings to match the uniform probe to the defective probe
as specified.
The wires should not be crimped or cut as otherwise the
function of the L ...
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Leak detection in refrigerant circuit using compressed air or nitrogen
Detecting leaks in refrigerant circuit using leak detecting system -VAS
6196- or leak detecting system -VAS 6201- or a later model