Toyota 3b Repair Manual page 113

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FUt481
lf
the opening pressure
is no within
specification, dis-
assemble
the
nozzle
and change the adjusting shim on the
top of the pressure spring.
Adjusted opening
pressure:
105
-
125k9/cm2
(1,493
-
1,778
Psil
(10,296
-
12,258 kPal
Adjusting shim
thickness
mm
(in.)
1.OO
(O.O3e4) I
1.50 (0.05e1)
1.05
(0.0413)
I
1.55 (0.0610)
1.10
(0.0433) I
1.60 (0.0630)
1.15
iO.O453) I
1.65 (0.0650)
1.2O
(O.O472) I
1.70 (0.0669)
1.25
(O.O492) I
1.75
(O.068e)
1.30
(0.0512) |
1
.8O (O.07Oe)
1.35
(0.0531) I
1.85 (0.0728)
1.40
(0.0551)
i
1.90 (0.0748)
1.45
(0.0571)
I
1
.95 (0.0768)
HINT:
.
Varying
the
adjusting
shim thickness
by
O.O5 mm
(O.0O2O
in.)changes the injection pressure
by
about 6.4
kg/cm2 (91 psi, 628
kPa).
o
Only one adjusting shim should be
used.
(e)
There should be no dripping
after
injection.
5.
LEAKAGE TEST
While maintaining pressure at about 10.0
-
2O.O
kg/cm2
(142
-
284 psi,
981
1,961 kPa) below
opening
pressure (adjust by tester handle), check
that there is
no
dripping
for
1O seconds
from the injection hole or
around
the retaining nut.
lf the
nozzle
drips
within
1O
seconds, replace
it
or
clean
and overhaul
the
nozzle assemblY.
SPRAY PATTERN TEST
(a)
The injection nozzle should shudder
at
a
pumping
speed between 15
-
60 times (old nozzle)or 30
-60
times (new
nozzle)
per minute.
(b)
Check
the
spray pattern during shuddering.
lf
the
spray pattern
is not
correct during shuddering,
the
nozzle
must be replaced or cleaned.
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