MTU 20V4000M93 series Operating Instructions Manual page 174

13. Open rotary slide valve (2) a little (turning to
approx. 30°) to introduce fuel into the filter
housing with the new filter element.
14. Close vent valve (1) as soon as fuel emerges
from vent pipe (4).
15. Turn the rotary slide valve to the upright posi-
tion (3) until it engages.
Result: Both filters are cut in.
16. Set differential pressure gage (→ Page 165).
172 | Fuel Filter | MS150048/05E 2018-03