MTU Detroit Diesel 183 Series Technical Publication page 330

Group 07
Subgroup 8410
Seite 6
20080/1 E 98-12
Remove sealing ring (4) from injection pump.
Installation
Install rotator with M8x20 screws on gear case and turn
engine in compression stroke of first cylinder until mark
for start of delivery is aligned with edge (arrow) in
inspection port.
The engine must not be turned back (the valves of the
first cylinder must be closed, the rocker arms fully
unloaded and the push rods must turn easily in the ball
sockets.
Rotating device
Fit sealing ring (4) on drive flange of injection pump.
Task Description
407 589 00 63 00