MTU Detroit Diesel 183 Series Technical Publication page 310

Group 07
Subgroup 6750
Page 6
20080/1 E 98-12
Fuel Injector Assembly
Clean injectors as described before re-assembling.
Check compression spring (6) for cracks and the thrust
pin for wear, replace if necessary.
Position nozzle holder (8) vertically in support.
Insert washer (7), compression spring and thrust pin
into holder.
Insert intermediate washer (4) and injection nozzle (2)
into nozzle holder.
Ensure that the locating pins in the intermediate washer
are correctly positioned!
Ensure the smooth surfaces are absolutely clean!
Note
Install an appropriate washer (7) if the injection
pressure was found to be too low or too high when the
nozzle was inspected.
If the pressure is too high or too low replace washer
with a thinner or thicker washer respectively.
Tighten thrust nut (1) onto nozzle holder with torque
wrench.
Tightening torque: 80 Nm.
Lubricant: Engine oil
Do not tighten the thrust nut with higher torque
otherwise the nozzle is under stress, leading to
jamming or catching of the nozzle needle.
Socket
Support
Check injection nozzle (07-6712).
Task Description
403 589 00 13 00
403 589 00 31 00.