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:
Relay carrier, fuse carrier in dash panel/A-pillar, LHD vehicles
1 -
Bracket
For parking aid control unit -J446-/park assist steering control
unit -J791-
Removing and installing
→ Chapter
2 -
Bracket
For onboard supply control unit -J519-
...
Introduction
This chapter contains information on the following subjects:
→ Indicator lamps and fuel gauge
→ Filling the tank with petrol, diesel or E85
→ Things to note for diesel vehicles
→ Capacities
→ Checks when filling the tank
The fuel c ...
Wheel bolts, versions
Explanations regarding types of convex seats
There are two different versions of convex tapered seats,
the spherical seat and the tapered.
The spherical seat is the curved surface of a s ...
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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