Checking The Component
Use protective gloves and protective goggles due to the risk of fuel spillage.
- Ignition on
- Position a glass gauge with a capacity of at least 15 cm3 under the fuel line.
Activate the heater.
On activation of the heater sequence, the heater starts up and operates for approximately 2 min 30 s. The fuel pump starts pumping fuel after approximately 45 seconds.
During measurement, remember to hold the container level with the heater. The fuel pump is automatically switched off after 90 seconds.
Do not interrupt the heater sequence. The heater is switched off automatically after approximately 2 min 30 s.
When the heater sequence is completed the read out of whether or not flames were detected can be made.
Compare the amount of fuel in the glass gauge with the values in the table below.
The fuel pump must be replaced if the measured amount of fuel exceeds the maximum value or is below the minimum value.
Nominal amount Nominal amount of fuel 11.1 cm3/90 s Max. amount of fuel 12.0 cm3/90 s Min. amount of fuel 10.4 cm3/90 s Other information
Is the fuel pump (FP) working?
- YES
Refer to CHECKING THE INTAKE AIR FLOW
- NO
Refer to VERIFICATION