MTU 12 V 4000 M23F Operating Instructions Manual page 229

Cleaning centrifugal oil filter
and replacing filter sleeve (en-
gines with switchable oil filter)
1. Undo and remove screw (1).
2. Remove clamp (3) and take off hood (2).
3. Carefully remove rotor (5) from housing.
4. Hold rotor assembly (5) firmly in position
with filter wrench and undo knurled nut (7).
5. Take off rotor cap (8).
6. Remove filter sleeve (9), stiffener plate (10)
and sealing ring (11).
7. Measure thickness of oil residues on filter
sleeve.
8. If maximum layer thickness of oil residues
exceeds 30 mm, shorten maintenance in-
terval.
9. Remove standpipe (12) from lower rotor
section (13).
10. Wash hood (2), rotor cap (8), stiffener
plate (10), standpipe (12), lower rotor sec-
tion (13) and nozzles (14) with cleaner and
blow out with compressed air. Do not use
sharp objects for cleaning.
11. Check nozzles (14) for obstructions.
12. Push standpipe (12) onto rotor lower sec-
tion (13).
13. Insert new filter sleeve (9) with stiffener
plate (10) into rotor cap (8), ensuring that
the smooth surface of the filter sleeve (9)
faces the rotor cap (8).
14. Check sealing ring (11), replace if necessa-
ry. Coat sealing ring with grease and insert
in groove of rotor cap (8).
15. Place rotor cap (8) onto standpipe (12).
16. Hold rotor assembly (5) firmly in position
with filter wrench and tighten knurled
nut (7).
17. Lubricate bearings of rotor (5), insert in
housing (6) and check for ease of move-
ment.
18. Check sealing ring (4), replace if necessary.
Fit sealing ring on housing (6).
19. Fit hood (2).
20. Tighten screw (1) by hand.
21. Install clamp (3) and tighten to specified torque using a torque wrench:
Name
Clamp
22. Tighten screw (1) to specified torque using a torque wrench:
Name
Screw
Size Type
Tightening torque
Size Type
Tightening torque
Lubricant
Lubricant
MS150068/01E 2014-01 | Task Description | 229
Value/Standard
6 Nm + 1 Nm
Value/Standard
6 Nm + 1 Nm