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:
Removing and installing pop-up cylinder
Special tools and workshop equipment
required
Drip tray
Removing
Note
Removal and installation are described for the left side.
Removal and installation on the right side are c ...
Removing and installing mechatronic unit for dual clutch gearbox -J743
Special tools and workshop equipment
required
Vehicle diagnostic tester
Used oil collection and extraction unit -V.A.G 1782-
...
Locking and unlocking the vehicle from the outside
Fig. 27 Buttons on the vehicle key
Fig. 28 Vehicle key with alarm button
First read and observe the introductory information
and safety warnings
Function
Buttons to be used on the vehicle key or
Unlocking the vehicle.
Press the b ...