Chapter 3 Fuel Injection
Equipment
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_______________________
3,4JH3(B)(CJE
Nozzle body identification number
The type of nozzle can be determined from the number
inscribed
on
the outside of the nozzle body.
1)
Hole type fuel injection nozzles
Sample
y
DLL A
-150
P
225TCO
1
-lT
~oesigh
code
L_
Nozzle
size
P
s,tze
S
size
Spray
angle
Mounting
angle
of
nozzle
on
cylinder
head
Code
A:
at
angle
No
code:
not
at
angle
Type
(Dll:
semi-long
type)
YANMAR
ldentification
number
6-2
Fuel injection nozzle disassembly
NOTE :
1.
Disassemble fuel injection nozzle
in
a clean
area as for the fuel injection pump.
2.
When
disassembling more than one fuel injec-
tion nozzle, keep the parts for each injection
nozzle separate for each
cylinder
(i.e. the
nozzle for cylinder 1 must be remounted in
cylinder 1
).
(1) When removing the injection nozzle from the cylinder
head, remove the high pressure fuel pipe, fuel leak-
age pipe, etc., the injection nozzle retainer nut, and
then the fuel injection nozzle.
Fuel
injection nozzle
Printed
in
japan
!IIXS!ll-118009
®
©
~-
Fuel
injection
nozzte
retainer
Hole
type
3-33
(2)
Put the nozzle
in
avise
NOTE : Use the special nozzle holder for the hole type
injection nozzle so that
the
high pressure mount-
ing threads are not damaged.
(3) Remo.ve the nozzle nut
NO
TE
: Use a special box spanner for the hole type (the
thickness
of
fhe two nozzle nuts is
15mm.
(4)
Remove the inner parts
NOTE:
Be
careful not
to
loosen the spring seat, adjusting
shims
or
other small parts.
6-3
Fuel injection nozzle inspection
6.3.1
Washing
(1)
Be
sure to use new diesel oil to wash the fuel injection
nozzle parts
(2) Wash the nozzle
in
clean diesel oil with the nozzle clean.
ing kit.
Nozzle
cleaning
kit
1) Zexel nozzle cleaning kit:
Type NP-8486B No.5789-001
2) Anzen Jidosha Co.,
ltd.
nozzle cleaning kit:
Type NCK-001
(3)
Clean off the carbon on the outside of the nozzle body
with
a brass brush.
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