4)
Take off the fuel
injection valve spring
holder,
taking care not
to
drop
the
nozzle spring
adjusting
plates.
Checking & Servicing
Check
point
Remed] Part code
NozzIe
valve.
Dusty,
stuck,
scratched or worn.
I
2
Clean if
dusty.
Clean or
renew if
stuck.
Renew
if
scratched.
Renew
if
worn.
YSES YSE12
Nozzle
valve
172100-5i000
Remark: Common to all models.
t
ReasBembly
Verification
After
completion of
the reassembly,
verify that the injection
pressure
and the
spray
nonnal
or as rated. A nozzle
tester simplifies
the verification. but if itrs not
to left and
fit
the tuel injection
valve and swing the
V
pulley
of the
power
take-off shalt
right.
venting is necessar'y.
l) Attach
tbe inter spildae. sti'ing
seat, nozzle spring,
adjusting
plate,
packing,
and
nozzle spdng holder.to
the fuel
injection valve body. Be
sure of the spring side of
the spdng seat, and do not drop
the spring
adjusting
plates-
)
Attach the nozzle
valve and the
nozzle bod! to the fuel injection valve
bodJ
)
Vise the fuel injection
valve and
tighten various
parts.
from are
available,
Injection
pressure
not
normal.
1.
Juclgement using nozzle tester.
2,
Judgement
without
using nozzle
tester.
(Low
pressure:
large fuel
particle
size, or bad
exhaust
color.
).
High
pressure:
small fuel
particle
aize, or knocking,
Adjust to 160 kg/cmz.
*
Adjusting
plate
thickness
and
pressures
YSES YSE12
Nozzle
spnng
adjusting
plate
1r0250-53150
Sold in sets.
I
2t
Check
point
Judging
criterion
&
remedy
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