apter
3 Fuel Injection Equipment
Fuel
Injection Nozzle
,4LHA Series
Nozzle
valve
F.O.
reservoir
Nozzle
body
Injection
hole
Spray
angle
MPa(kgf/cm
2
)
Dzzie
opening
essure
26.5-27.5
(270-280)
23.5-24.5
(240-250)
Dzzie
type
140P355KO
5-^0.35X140*
140P325KO
5-^0.32X140"
igine model
4LHA-STE/STZE
STP/STZP
4LHA-DTE/DTZE
DTP/DTZP
Nozzle
body
identification
number
The
type of nozzle can be determined
from
the
number inscribed on the outside of the nozzle
body.
Hole
type fuel injection nozzles
iple)
Y DLL A - 150 P
244JO
-Design
code
I—Spray
angle
— Mounting angle
ol
nozzle
on
cylinder head
Code
A:
at angle
No
code:
not at angle
-Nozzlesize
Psize
Ssize
Type
(DLL:
semi-long type)
YANMAR
Identification
number
7-3
Fuel
injection
nozzle
disassembly
NOTE: 1. Disassemble the fuel injection nozzle in
a clean area as for fuel injection pump.
2. When disassembling more than one fuel
injection nozzle, keep the parts for each
injection nozzle separate (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 leakage pipe, etc., the injection nozzle retainer
nut, and then the fuel injection
nozzle.
Fuel
injection nozzle
Hole
type
(2) Put the nozzle in a vise
NOTE: Use the special nozzle holder for the hole
type injection nozzle so that the high pressure
mounting threads are not damaged.
(3) Remove the nozzle nut
Box
spanner
Holder
3-2-44