Volkswagen Golf Service & Repair Manual: Heat always flows from warmer to colder material
Every material consists of a mass of moving molecules. The fast moving molecules of a warmer material loose part of their energy to slower molecules possessing less heat. This slows down the molecules of the warmer material and accelerates those with less heat. This continues until the molecules in both materials are moving at the same speed. They have the same temperature, and no further exchange of heat occurs.
Physical basics
The four known physical states of water also apply to air
conditioning refrigerants.
1 -
Gas (invisible)
2&nbs ...
Pressure and boiling point
The boiling points given in the table below are always based
on an atmospheric pressure of 1 bar. If the pressure on a liquid
is changed, its boiling point changes al ...
Other materials:
Overview of fitting locations - front control motors, air conditioning system
with electric/manual controls, RHD vehicles
1 -
Temperature flap control motor -V68-
Checking: with vehicle diagnostic tester
Removing and installing
→ Chapter.
Renewing: initiate basic setting using vehicle diagnostic tester.
2 -&nb ...
Fitting single wire seals
Note
Single wire seals prevent the ingress of moisture and dirt
in the contact housing. They are installed, for example, in the
engine compartment and must always be reinstalled following
repairs.
As standard, ...
General repair notes
To ensure flawless and successful gearbox repairs, the
greatest care and cleanliness as well as the use of good and
proper tools are essential. Of course, the basic rules for
safety also apply during repair work.
A number of genera ...
