Frequently asked questions
IntroductionTire Wear, Center
This wear pattern is found on drive wheels on high-powered
vehicles that often drive long stretches at high speed.
At high speeds, the centrifugal force increases the tire
diameter at the center of the tread more than at the shoulders
of ...
Refrigerant Circuit, Converting R12 to R134a and Servicing
Note
The laws and regulations listed below are applicable in
Germany. Different or additional laws and regulations may apply
in other countries.
Addresses in other countries can be obtained from the
relevant au ...
Welding and Soldering on Refrigeration Systems
Before performing welding or soldering work on vehicles near
the air conditioning system components, extract the refrigerant
and remove the residue by flushing with compressed air and
nitrogen.
The products of refrigerant decomposition d ...