Technical data

Fuel Injector 6–21
Injector installation
1. Prior to installation, remove all plugs.
2. Clean sealing surface on cylinder head and
protective sleeve.
3. Coat new sealing ring (1) with petroleum jelly
and fit onto injector.
4. Coat new sealing ring (2) with petroleum jelly
and fit onto injector.
5. Press injector into cylinder head by hand.
Result:
• The pin must be at 11-o’clock position to the
longitudinal axis of the engine.
• The pin must be engaged in the groove
of
the clamp (4).
6. Install clamp (4) with screw (5), positioning it
correctly.
Result:
Forked clamp end must engage in the
cover recess.
7. Check injector for correct seating.
8. Tighten clam
p screw (5) to 50 Nm.
9. Blow out fuel
line (3) and pressure pipe neck (1)
with compressed air.
10. Coat new O-ring with petroleum jelly and fit on
pressure pipe neck (1).
11. Coat sealing cone of pressure pipe neck with
engine oil.
12. Insert pressure pipe neck into cylinder head until
the sealing ring is in contact with cylinder head,
do not press in yet!
13. Press pressure pipe neck (1) into cylinder head
by hand.
14. Screw thrust screw (2) into cylinder head by a
few threads.
15. Tighten thrust screw (2)
to 40 Nm + 5 Nm.
16. Install fuel line (3).
17. Tighten union nut on injection pump to
30Nm+5Nm.
18. Tighten union nut on pressure pipe neck to 20
Nm+5Nm.
19. Install leak-off-fuel lines.
Final steps
1. Install cylinder head cover (→ Page 6 – 13).
2. Vent fuel system (→ Page 6 – 23).
M015560/00E 03-05 ©MTU