Man D 0836 LE 401 Operating Instructions Manual page 63

If air gets into the high-pressure part of
the injection pump (model VP 44) the sys-
tem must be bled again.
If the engine does not start after the tank
has been run empty or after repairs to the
fuel system the high-pressure system
must be bled.
The following steps must be carried out
onat least three cylinders,
one after the other:
D Loosen the union nut in one pressure
pipe at the injection nozzle by approx.
1/2 revolution
D Turn engine over with starter motor un-
til fuel is seen to emerge.
Caution:
The pipes contain fuel!
Use a rag to catch any fuel that
emerges.
Comply with safety regulations
and official regulations!
D Tighten the union nut
Note:
First tighten the nuts to 10 Nm and
then by an angle of 60_.
Violent tightening will destroy the
screw connection!
D Start the engine and let it idle for ap-
prox. 30 seconds to ensure that the in-
jection pump is lubricated and that the
system is completely bled.
Maintenance and care
63