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:
Introduction
This chapter contains information on the following subjects:
→ Warning and indicator lamps
→ Electronic parking brake
→ Parking
→ Information on the brakes
→ Brake support systems
→ Switching TCS or TCS with ESC on and off ...
Introduction
This chapter contains information on the following subjects:
→ Handling seat covers
→ Cleaning cloth seat covers, fabric trim and Alcantara upholstery
→ Cleaning and caring for natural leather covers
→ Cleaning leatherette upholstery
→ C ...
Loading the trailer
First read and observe the introductory information
and safety warnings Trailer weight and drawbar load
The trailer weight is the weight that the vehicle can pull . The drawbar load
is the weight that the towing bracket exerts on the ball coupling vertically from
above .
The figure ...
