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6.7.6 Fuel prefilter – Draining
from MTU 12V4000M23F_ 12V4000M23S_ 16V4000M23F_ 16V4000M23S_ MS150068_01E Diesel Engine Operating Instruc
Preconditions
☑Engine is stopped and starting disabled.
WARNING Fuels are combustible.
Risk of fire and explosion!
• Avoid open flames, electrical sparks and ignition sources. • Do not smoke.
Draining fuel prefilter
1. Cut out the filter to be replaced (A or B). 1 Filter A cut out 2 Filter B cut out
2. Open vent plug (1) of filter to be drained. 3. Open drain valve (2). 4. Drain water and contaminants from filter until pure fuel emerges. 5. Close drain cock (2).
6. Connect filling pump to filling connection (1) on the suction side of the filter. 7. Open vent valve (2) and fill with fuel until fuel emerges from the vent pipe (3). 8. Close vent valve (2). 9. Open rotary slide valve (4) a little (by approx. 30°) and open vent valve(s) (2), until fuel emerges from the vent pipe (3). 10. Close vent valve(s) (2). 11. Turn rotary slide valve (4) back to locked position.
