- 41 -
KD 477-2 Workshop Manual_cod. ED0053029370_
1° ed
_ rev.
00
XIII
84
85
86
87
Checking start of injection
1
. Connect fuel tank to injection pump.
2
. Bring accelerator lever to max. position and piston, flywheel side,
at compression beginning (cylinder No 1)
All operations are to be carried out with the rack bar in wor-
king position to annul the delay caused by the notch on the
pumping element of the injection pump.
3
. Fit the special tool, p.n.
00365R0940
, to the delivery valve holder
(flywheel side) as shown in figure 84.
4
. Insert a band (fig. 85) to ease the tension of the spring.
5
. Turn the flywheel slowly until the column of diesel fuel inside the
special tool starts to move. This indicates the start of static injec-
tion.
At this moment injection pimp delivery starts (fig. 86) and the top
dead centre reference on the air conveyor must coincide with the
IP
mark punched cm the flywheel (fig. 87).
If the
IP
mark falls short of the notch on the air conveyor, injection is
too fast. The injection pimp must be disassembled and shims must be
added between the pump flange and the crank case.
If the
IP
mark falls after the T.D.C. reference notch, injection is too
slaw and the above operation is to be inverted.
Bear in mind that every
0.1 mm
shim under the pimp corresponds to
a
2.5 mm
rotation of the flywheel.
Repeat operation on second pumping element.
Should the flywheel need to be replaced, the top dead center com-
pression position of the pistons is to be determined as per page 40
and the start of injection according to the following table:
ENGINE ASSEMBLY
Ø flywheel
I.P.
236 mm
26°
=
53,5 mm
