- 27 -
KD 477-2 Workshop Manual_cod. ED0053029370_
1° ed
_ rev.
00
XI
36
37
38
39
The quantity of diesel is in relation to 1000 deliveries with the rack bar
at
8 mm
from the stop position.
Engine
Ø Pumping
element mm
cc
valve
Valve Ø
mm
Capacity
cc
Pump
RPM
INJECTION EQUIPMENT
Injection pump assembly
After having dismantled the injection pump it should be reassembled
in the following manner:
1
. Insert cylinders into pump casing with diesel inlet opposite to fe-
eding inlet connection (fig. 36). This position is necessary due to
two eccentric dowels on the pump casing.
Make sure the supporting faces of the cylinders and pumps are
free of dirt.
2
. Fix cylinders by inserting valves and temporarily tightening the
delivery connections to stop the pumping elements from coming
out. (fig. 37).
3
. Insert rack bar and lock in a half way position (fig. 38). Make sure
the bar moves freely on the guides. Resistance and drag will cau-
se the engine to run unevenly.
4
. Marks
b
cut on the bar must coincide with marks
a
of the too-
thed quadrants. Marks
c
on toothed quadrants must coincide with
marks
d
on the flanges of the piston (fig. 39).
5
. Insert piston into cylinder with groove turned towards the eccen-
tric dowel on the pump casing.
6
. Complete assembly of pump.
IMPORTANT:
The roller tappets (No 8 fig. 34) and the lo-
wer plates are not interchangeable as they determine the
timing of the pumping elements.
When replacing parts make sure that:
a. the distance between the injection cam in bottom dead
centre position (PMI) and the pump supporting surface is
82.6
to
83 mm
as stated on the plate.
b. the piston stroke from the bottom dead centre position (PMI) of
the injection cam to delivery commencement is
2.0
to
2.1 mm
.
7
. Check pressure seal again, as described in paragraph "Checking
injection pump" page 26, to make sure the replaced parts are
working properly.
6
15
4
1500
KD477-2
24 ÷ 26
