MTU 16V4000M73 Operating Instructions Manual page 142

Note: Danger of confusion: There might be an addi-
tional OT/A1 mark (1) on the outer perimeter
of the flywheel.
4. The additional OT/A1 mark (1) (if fitted) on
the outer perimeter of the flywheel must not
be used for reference.
Diagram for 8V engines – Two
crankshaft positions
Diagram for 12V engines – Two
crankshaft positions
142 | Valve Drive | MS150123/01E 2017-05