Volkswagen Golf Service & Repair Manual: 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 can detect leakage rates of less than 5 grams loss of refrigerant per year. The leak detector should be specific to the composition of the particular refrigerant in use. For example, a leak detector for R12 refrigerant is not appropriate for R134a refrigerant because R134a refrigerant has no chlorine atoms to which the lead detector responds.)
Charge factor
There must be space both for liquid and vapour in a
container. As the temperature rises, the liquid expands. The
space occupied by the vapour becomes smaller. Eventua ...
Refrigerant machine oil
Refrigerant machine oil is miscible (approx. 20%–40%
depending on the type of air conditioner compressor and the
quantity of refrigerant) in the refrigerant. I ...
Other materials:
Air recirculation mode
First read and observe the introductory information
and safety warnings General notes
There are different types of air recirculation mode:
Manual
air recirculation mode (heating system, air conditioning (manual), Climatronic).
...
Removing and installing intermediate padding, backrest with through-loading
aperture
Removing
–
Fold down lid for through-loading aperture.
–
Release locking lugs -1- using
a screwdriver and at the same time push down intermediate
padding -2- as far as stop
-arrow A-.
...
Fitting the rear towing eye
Fig. 248 Rear bumper on the right-hand
side: removing the cover
Fig. 249 Rear bumper on the right-hand
side: screwing in the towing eye
First read and observe the introductory information
and safety warningsThe towing eye is screwed into a threaded hole behind
a cover on the right of the ...
