Isuzu engine 4j series. Manual - part 76
6C - 48 ENGINE FUEL
+
0.4
−
0.3
+
0.4
−
6.0
F06LV022.tif
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
Remarks
700
Over 0.5
—
—
—
1400
—
1.5±0.4
—
—
1600
—
3.0±0.2
—
0.53±0.02
(5.4±0.2)
Standard
2100
—
5.7
—
—
Engine ; 4JB1 (For ’91/542A) (Gear drive)
Injection pump identification No. ; 104742-1451, 1461, 1471
Injection volume adjustment
Timer adjustment
Adjustment specification of injection
volume
Pump
rotation
(rpm)
Average
injection
quantity
(mm
3
/ST)
Uneven
amplitude
(mm
3
/ST)
Oil
temperature
(°C)
Remarks
500
(29.7±4.5)
48±2
1000
(46.4±3.5)
50±2
1150
47.6±1.0
3.5
50±2
Standard
1800
(55.5 )
50±2
2100
14.9±3.0
4.0
52±2
Standard
375
7.3±2.0
2.0
48±2
Standard
100
(60 - 100)
48±2
Adjustment specification of aneroid
compensator (For 104742-1471)
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
1150
2000
-21.9
(-164)
(-5.2±1.3)
(-11±3)
F06LV004.tif
F06LV021.tif