Isuzu engine 4j series. Instruction - page 75
6C - 44 ENGINE FUEL
IDENTIFICATION PLATE AND NUMBER
Use the data following the injection pump identification number
to adjust the injection volume.
F06LV002.tif
F06LV001.tif
F06LW002.tif
ENGINE FUEL 6C - 45
INJECTION VOLUME AND GOVERNOR PERFORMANCE DIAGRAM
Adjustment specification of injection
volume
Pump
rotation
rpm
Average
injection
quantity
mm
3
/ST
Uneven
amplitude
mm
3
/ST
Oil
temperature
°C
Remarks
500
(38.6)
48±2
700
34.9±2.5
50±2
1000
42.1±1.0
4.0
50±2
Standard
1450
44.5±2.5
50±2
1800
47.6±3.0
60±2
2100
12.9±3.0
4.0
52±2
390
6.7±3.0
2.0
48±2
100
60 - 100
48±2
Engine ; 4JB1
Injection pump assembly No. ; 8943616830 (104741-6410)
8943616850 (104741-6430)
Adjustment specification of timer and
pump case pressure
Timer piston
stroke mm
Air pressure
of pump
kPa (kg/cm
2
)
Solenoid timer
Solenoid timer
Pump
rotation
rpm
ON
OFF
ON
OFF
Standard
700
Over 0.5
—
—
—
1300
—
1.4±0.4
—
—
1600
—
3.9±2
—
490±20
(5.0±0.2)
Standard
1950
—
7.0
—
—
Adjustment specification of aneroid
compensator
Pump
rotation
rpm
Altitude
m
Air
pressure
difference
kPa
(mmHg)
Amount of
reduction
mm
3
/ST
Rate of
reduction
%
0
0
0
0
(500)
-5.9±3.3
(-44±3)
Inflation
point
Inflation
point
1000
2000
-21.9
(-164)
-4.6±1
-11±3
6C-44-3.tif
6C-44-1.tif
6C-44-2.tif
+
0.4
−
0.3
6C - 46 ENGINE FUEL
+
0.4
−
0.3
Adjustment specification of timer and
pump case pressure
Timer
piston
stroke (mm)
At pressure
of pump
(MPa (kg/cm
2
))
Solenoid timer
Solenoid timer
Pump
rotation
(rpm)
ON
OFF
ON
OFF
Standard
700
Over 0.5
—
—
—
1300
—
1.4±0.4
—
—
1600
—
3.9±2
—
0.49±0.02
(5.0±0.2)
Standard
1950
—
7.0
—
—
Adjustment specification of injection
volume
Pump
rotation
(rpm)
Average
injection
quantity
(mm
3
/ST)
Uneven
amplitude
(mm
3
/ST)
Oil
temperature
(°C)
Remarks
500
(38.6)
48±2
700
34.9±2.5
50±2
1000
42.1±1.0
4.0
50±2
Standard
1450
44.5±2.5
50±2
1800
47.6±3.0
50±2
2100
12.9±3.0
4.0
52±2
390
6.7±2.0
2.0
48±2
100
60 - 100
48±2
Engine ; 4JB1
Injection pump identification No. ; 104746-1230, 1240, 1250, 1260, 1280, 1290, 1370
Injection volume adjustment
Adjustment specification of aneroid
compensator (For 104746-1230,14746-
1280)
Pump
rotation
(rpm)
Altitude
(m)
Air pressure
difference
kPa
(mmHg)
Amount of
reduction
(mm
3
/ST)
Rate of
reduction
(%)
0
0
0
0
(500)
-5.9±3.3
(-44±25)
Inflation
point
Inflation
point
1000
2000
-21.9
(-164)
-4.6±1
-11±3
F06LV004.tif
F06LV019.tif
F06LV020.tif
Timer adjustment
ENGINE FUEL 6C - 47
6C-46-3.tif
Adjustment specification of injection
volume
Pump
rotation
rpm
Average
injection
quantity
mm
3
/ST
Uneven
amplitude
mm
3
/ST
Remarks
100
78±12
350
64±6.0
500
52±3.0
720
55.9±3.4
1000
62.6±1.0
4.0
1250
60.9±3.5
1700
574±3.5
4.0
2100
13±5.0
2250
Below 5.0
360
15.9±3.0
2.5
550
Below 3.0
Engine ; 4JG2 (For ’91/542B) (Belt drive)
Injection pump assembly No. ; 897138-8422 (196000-1042)
F06LV005.tif
F06LV004.tif
F06LV007.tif
F06LV006.tif
F06LV008.tif