MTU MS150112/01E Operating Instructions Manual page 176

Note: • The procedure is only described for one
exhaust flap, but also applies to the re-
maining exhaust flaps. Exhaust flap over-
view (→ Page 144).
• Collect emerging engine coolant in a
suitable container.
10. Loosen the union nut (4) of the lower cool-
ant line (3).
11. Carefully pull the coolant line (3) out of the
union.
12. Loosen the union nut (1) of the upper cool-
ant line (2).
13. Pull the coolant line (2) somewhat out of
the union.
Note: Wait until no more coolant comes out of
the lines.
14. Tighten the union nuts (1, 4) of the coolant
lines (2, 3) again.
Final steps
1. Close all drain valves and screw in drain plugs with new sealing rings.
2. Fit cap on filler neck and close it.
176 | Task Description | MS150112/01E 2014-10