6-6
Model 3090/3090AK Engine Exhaust Particle Sizer
TM
Spectrometer
6. As you lift the charger head, note the honeycomb flow straightener. The
“honeycomb” may be dislodged, it may stay inside the charger
assembly, or it may stay inside the column. If the honeycomb remains in
the charger assembly or inside the column, use a needle nose tweezers
to remove it (Figure 6-5). Put the honeycomb aside for reassembly.
Figure 6-5
Remove the Honeycomb for Reassembly
7. With the charger head upside down on the charger column (as shown in
Figure 6-5) and the honeycomb removed, inspect the charger needle.
8. The charger needle (Figure 6-6) is located on top of the white cone tip
(insulator) and is nearly invisible to the naked eye. Use a magnifying
glass (8x minimum), a jeweler's loop, or a microscope to view the fine
charger wire. Generally, if you have a charger error, you will see a tiny
bulb of contaminant (either white or black) collected on the charger
needle.
