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Checking and adjusting CO2 content in exhaust gas of auxiliary heater > < Unfastening quick-release coupling at auxiliary heater fuel pipe

A4 Mk2

Routing of fuel pipe to auxiliary heater
Routing of fuel pipe to auxiliary heater
   
The fuel pipe between the metering pump -V54- and the auxiliary heater -A- is routed on the floor of the vehicle.
The various holders -B-, -C-, -D- etc. not only secure the fuel pipe -A- in position, but also the brake pipes.
The fuel pipe -A- must be routed such that it does not come into contact with components which become warm and must be protected against heat generation which could affect operation.
  A82-0340

Checking and adjusting CO2 content in exhaust gas of auxiliary heater > < Unfastening quick-release coupling at auxiliary heater fuel pipe