Fav 900
Engine / Injection valves
Checking injection nozzles
E
Testing
Fav 900 chassis number 23/3001and up
05.02.2001
2712 000001
E
a
3/3
Capitel Docu-No.
Index
Date Version
Page
Checking injection nozzles
PM-Picturemodule
PM-Picturemodule
PM-Picturemodule
PM-Picturemodule
PMTAB_Picture
Terst intermediate washer for wear.
Fit pressure pin and intermediate washer.
PMTAB_Picture
Dip nozzle and needle separately into filtered
diesel fuel, and check slide resistance.
When the needle is withdrawn from the nozzle
body by one third and released, it must drop back
into the position by its own weight.
Fit injection nozzle observing the location of pins.
PMTAB_Picture
Screw on threated union and tighten to specified
torque.
Check injection nozzle on the test appliance.
PMTAB_Picture
Observe correct seating of filter in the nozzle
holder.
The cause for these problems may well be due to
an off-center filter in the nozzle holder. The
injection flow is throttled and slowed down,
leading to engine problems.
Always measure the press-in depth of the filter in
the nozzle holder inlet.
The permissible press-in depth is approx. 5 mm
(.197").
If the filter can be inserted further, the nozzle
holder must be replaced.
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