Toyota 3b Repair Manual page 15

ENGINE MECHANICAL
-
Diesel Engine Diagnosis
EM-7
:-
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.l
ptpe.
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d
9r
or
be
reep
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G--l
!
F
I.r/
tnlTAKE
HEATERI
I
1,.-wi,r.r
ne
ignition switch turned
ON
and
tn"
int"n"-l
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INOPERATIVE
PRE-HEATING
heater indicator light illuminated, check that there
is
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]
voltage applied to
the intake
heater.
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lf
not, refer to
ELECTRICAL
DIAGNOSIS and repair
as
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I
necessarv.
(See
oaqe
EM-13)
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z.
IB
AND
3BI
I
f
Check
the glow plug for continuity. (See page
5T-6)
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i
lll!ry-9fgw PLUG
lf
no continuity, a broken
wire
is indicated and
the
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J
lglow
ptug snouto oe
reptace.
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I
e.
[w,z INTAKE
HEATER]
i
[Cnect the
intake heater continuity.
(See page
ST-11)
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i
ll9!ry-1ry-TIKE
HEATER
tf no continuity, a broken
wire
is indicated and
intake
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J
I
heater should'be
replaced.
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lean
9.
IMPROPER INJECTION
TIMING
Turn crankshaft pulley clockwise to where either
No.
1
or
No.
4 piston
is at TDC
and, after releasing
cold
start advance system
(w/
ACSD),
check plunger
stroke
with SST. (See page EM-221
ssr
09275-54010
Plunger
stroke:
B,
38
1.27
-
1.33 mm
(O.O45O
-
O.0524 in.)
118
1.34
-
1.4O mm
(0.0528
-
O.O551 in.)
148
1.31
-
1.37
mm
(0.0516
-
O.O539 in.)
lf
not
as
specified, injection timing must
be
readjusted.
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t
o.
[w,z
ACSD]
I
I M"asrr"
timer piston stroke and fast idle
lever
.l
I IMPROPER COLD
START
opening angle
with
injection pump tester when
cold
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ADVANCE AND FAST
IDLE |
[start
advance is
operated.
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11.
FAULW INJECTION
NOZZLE Check
the injection pressure with
nozzle tester.
(See page FU-9 or
15)
Opening pressure:
B
and
38
105
-
125k9/cm2
(1,493
-
1,778 psi)
(10,296
-
12,258kPa\
118
and
148
180
-
21Okg/cm2
(2,560
-
2,987 psi)
(17,652
-
20,594
kPa)
It not
within specification,
nozzle
adjustment
is
improper and pressure should be readjusted.
lf pressure cannot
be
adjust to specification, replace
nozzle.