MTU 12V4000M73 series Operating Instructions Manual page 191

Installing injector
Note: • The new sealing ring is included in the
scope of supply of the injector (new part).
• Use a multi-purpose grease without solids
content.
1. Install new sealing ring (1) with multi-purpose
grease and ensure that the installation posi-
tion is correct.
Note: If the milling cutter is pressed with excessive
force into the seat of the injector, this can
cause damage to the cylinder head.
2. Remove oil carbon from sealing face on cylin-
der head and protective sleeve by using the
milling cutter with little force.
Note: Remove seal plugs on HP line only before in-
stallation of the adapter.
3. Remove seal plug.
Note: The damper ring is already in place for new
assembly. Coat damper ring with assembly
compound.
4. Fit damper ring (1) on injector and coat with
assembly compound (Molykote P 37).
Note: The O-rings are already in place for new as-
sembly. Coat O-rings with assembly com-
pound.
5. Fit new O-rings (3) and (2) on injector and
coat with assembly compound (Kluthe Haku-
form 30-15).
Note: Make sure that the sealing ring does not fall
into the water sleeve.
6. Ensure that the sealing ring (4) is correctly
seated.
7. Insert injector with hold-down clamp into cyl-
inder head, ensuring that the HP line connec-
tion is correctly aligned.
MS150045/03E 2018-08 | Injection Valve / Injector | 189