MTU 12 V 4000 M23F Operating Instructions Manual page 196

2. Open vent valve (1) of the filter to be re-
placed.
3. Open drain valve (5) and drain fuel.
4. Loosen screws (3) and screw out filter
housing (A or B).
5. Remove filter element (4).
6. Insert new filter element in filter housing.
7. Fit O-ring.
8. Reinstall filter housing (A or B) with filter el-
ement (4).
9. Tighten screws (6 or 3) with torque wrench to the specified tightening torque (maximum half a turn per
screw).
Name
Screw
10. Connect filling pump to filling connection
(1) on the suction side of the filter.
11. Open vent valve (2) and fill with fuel until
fuel emerges from the vent pipe (3).
12. Close vent valve (2).
13. Open rotary slide valve (4) a little (by ap-
prox. 30°) and open vent valve(s) (2), until
fuel emerges from the vent pipe (3).
14. Close vent valve(s) (2).
15. Turn rotary slide valve (4) back to locked
position.
196 | Task Description | MS150068/01E 2014-01
Size Type
Tightening torque
Lubricant Value/Standard
40 Nm