seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

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Regulation of auxiliary heaters -B5W- S and -D5W- S > < Test prerequisites:

Leon Mk2

Checking:
Checking:
  WARNING
Danger of fuel escaping.
Fuel system is under pressure.
Before opening system, wrap a cloth around the connection. Then release pressure by carefully loosening the connection.
   
–  Remove fuel line from pressure connection of metering pump and fit a new fuel hose (length approx. 200 mm) from pressure connection to measuring glass (capacity approx. 25 ml).
–  Switch auxiliary heater on (with the help of a second mechanic, if required). The metering pump will start to deliver after 45 seconds.
–  Hold measuring glass at same height as heater unit.
–  After approx. 40 seconds, the fuel line is filled and bled.
–  Switch auxiliary heater off and empty measuring glass.
–  Switch auxiliary heater on again.
  N82-0157
–  Hold measuring glass at same height as heater unit.
–  The auxiliary heater switches off automatically after 90 seconds.
–  Read measuring glass. Quantity delivered: petrol = 10.9 ml to 12.1 ml; diesel = 7.5 ml to 8.5 ml
–  If quantity delivered is not within specifications, renew metering pump -V54-.
  Note
t  If the ambient temperature is above 20 °C, fuel vaporisation may lead to incorrect measurements.
t  No bubbles are to be delivered.
  N82-0157

Regulation of auxiliary heaters -B5W- S and -D5W- S > < Test prerequisites: