Information injection-pump assembly
ZEXEL
104749-1770
1047491770
ISUZU
8941286570
8941286570
Rating:
Cross reference number
ZEXEL
104749-1770
1047491770
ISUZU
8941286570
8941286570
Zexel num
Bosch num
Firm num
Name
104749-1770
8941286570 ISUZU
INJECTION-PUMP ASSEMBLY
4FC1J * K
4FC1J * K
Calibration Data:
Adjustment conditions
Test oil
1404 Test oil ISO4113orSAEJ967d
1404 Test oil ISO4113orSAEJ967d
Test oil temperature
degC
45
45
50
Nozzle
105000-2010
Bosch type code
NP-DN12SD12TT
Nozzle holder
105780-2080
Opening pressure
MPa
14.7
14.7
15.19
Opening pressure
kgf/cm2
150
150
155
Injection pipe
Inside diameter - outside diameter - length (mm) mm 2-6-840
Inside diameter - outside diameter - length (mm) mm 2-6-840
Transfer pump pressure
kPa
20
20
20
Transfer pump pressure
kgf/cm2
0.2
0.2
0.2
Direction of rotation (viewed from drive side)
Right R
Right R
Injection timing adjustment
Pump speed
r/min
1250
1250
1250
Average injection quantity
mm3/st.
32.5
32
33
Difference in delivery
mm3/st.
2.5
Basic
*
Injection timing adjustment_02
Pump speed
r/min
2600
2600
2600
Average injection quantity
mm3/st.
15.5
14
17
Injection timing adjustment_03
Pump speed
r/min
2250
2250
2250
Average injection quantity
mm3/st.
30.9
28.8
33
Injection timing adjustment_04
Pump speed
r/min
1800
1800
1800
Average injection quantity
mm3/st.
32
30
34
Injection timing adjustment_05
Pump speed
r/min
1250
1250
1250
Average injection quantity
mm3/st.
32.5
31.5
33.5
Injection timing adjustment_06
Pump speed
r/min
600
600
600
Average injection quantity
mm3/st.
26.5
24.5
28.5
Injection quantity adjustment
Pump speed
r/min
2600
2600
2600
Average injection quantity
mm3/st.
15.5
14.5
16.5
Difference in delivery
mm3/st.
4.5
Basic
*
Injection quantity adjustment_02
Pump speed
r/min
2900
2900
2900
Average injection quantity
mm3/st.
4
Governor adjustment
Pump speed
r/min
400
400
400
Average injection quantity
mm3/st.
7.6
5.6
9.6
Difference in delivery
mm3/st.
2
Basic
*
Governor adjustment_02
Pump speed
r/min
400
400
400
Average injection quantity
mm3/st.
7.6
5.6
9.6
Governor adjustment_03
Pump speed
r/min
475
475
475
Average injection quantity
mm3/st.
3
Timer adjustment
Pump speed
r/min
100
100
100
Average injection quantity
mm3/st.
60
50
70
Basic
*
Speed control lever angle
Pump speed
r/min
400
400
400
Average injection quantity
mm3/st.
0
0
0
Remarks
Magnet OFF
Magnet OFF
0000000901
Pump speed
r/min
1250
1250
1250
Overflow quantity
cm3/min
459
330
588
Stop lever angle
Pump speed
r/min
1250
1250
1250
Pressure
kPa
470.5
451
490
Pressure
kgf/cm2
4.8
4.6
5
Basic
*
Stop lever angle_02
Pump speed
r/min
1250
1250
1250
Pressure
kPa
470.5
451
490
Pressure
kgf/cm2
4.8
4.6
5
Stop lever angle_03
Pump speed
r/min
2000
2000
2000
Pressure
kPa
637.5
608
667
Pressure
kgf/cm2
6.5
6.2
6.8
0000001101
Pump speed
r/min
1250
1250
1250
Timer stroke
mm
3.9
3.7
4.1
Basic
*
_02
Pump speed
r/min
570
470
670
Timer stroke
mm
0.5
0.5
0.5
_03
Pump speed
r/min
1250
1250
1250
Timer stroke
mm
3.9
3.6
4.2
_04
Pump speed
r/min
1800
1800
1800
Timer stroke
mm
6.7
6.1
7.3
_05
Pump speed
r/min
2250
2250
2250
Timer stroke
mm
9
8.6
9.4
0000001201
Max. applied voltage
V
8
8
8
Test voltage
V
13
12
14
Timing setting
K dimension
mm
3.3
3.2
3.4
KF dimension
mm
5.8
5.7
5.9
MS dimension
mm
1.6
1.5
1.7
Pre-stroke
mm
0.25
0.23
0.27
Control lever angle alpha
deg.
24.5
20.5
28.5
Control lever angle beta
deg.
45
40
50
Test data Ex:
0000001801 MICROSWITCH ADJUSTMENT
Microswitch adjustment
With the control lever a from the idle position (idle stopper lever clearance L1) and the microswitch ON, gradually move the microswitch and fix it in the position where the microswitch goes OFF.
(From the idle position the microswitch is on at a.)
----------
a=26+-1deg L1=8.5+-0.2mm
----------
----------
a=26+-1deg L1=8.5+-0.2mm
----------
0000001901 FICD ADJUSTMENT
Adjustment of the V-FICD
1. Adjust so that the distance between the control lever and the FICD shaft is S.
2. Apply negative pressure P to the actuator and confirm the full stroke.
----------
S=1+1mm P=-53.3kPa(-400mmHg)
----------
----------
S=1+1mm P=-53.3kPa(-400mmHg)
----------
Information:
Illustration 7 g06347860
Injector male spade terminals
There are two options to build injector adapter harness for C3.3.If available, use the injector connector removed from C3.3 harness. Cut both 100 mm wires from the connector and attach bullet terminals that fit in the injector adapter harness C3.8 terminal from injector test kit.If no harness is available, build a harness with the following. Two female spade terminals for injector male spade terminal, two 16 gauge 100 mm wires, and two bullet terminals for injector adapter harness C3.8 terminal.
Illustration 8 g06345429
Injector adapter harness C2.4
Illustration 9 g06346223
Injector adapter harness C3.8
Illustration 10 g06346237
Injector male spade terminals
There are two options to build injector adapter harness for C2.4.If available, use the injector connector removed from C2.4 harness. Cut both 100 mm wires from the connector and attach bullet terminals that fit in the injector adapter harness C3.8 terminal from injector test kit.If no harness is available, build a harness with the following. Two female spade terminals for injector male spade terminal, two 16 gauge 100 mm wires, and two bullet terminals for injector adapter harness C3.8 terminal.Injector Test Set-up
Illustration 11 g06346391
Mounted nozzle test group
Find a suitable stable and surface to either mount or place the nozzle test group. Fill fuel container with #1 diesel and install high-pressure hose assembly. Use adaptors, if needed, based on nozzle tester. Tighten the fuel line adapter to (25 ft lbs). Install the fuel line adapter and tighten to (25 ft lbs) to allow connection to the injector.
Illustration 12 g06346423
Injector holder assembly
Take the injector test kit and remove all parts to assemble, as shown above. Take the injector holder and the clear fuel shield with screws from the kit and remove the screws using a 3mm alan wrench. Assemble the parts so the clear fuel shield with screws is on the bottom. While, the mounted injector holder is on top with the screws removed from before.
Illustration 13 g06346719
Fuel collector and injector holder
Place injector holder onto a fuel collector or another container to capture the injection spray.
Illustration 14 g06346839
Injector setup and harness connection
Install the injector that is needing to be tested into the opening at the top of injector holder. Attach the return fuel drain hose and run the drain hose to another fuel collector. Make the harness connection using the correct adapter for the C2.4, C3.3, and C3.8 engines. Connect the injector pulse tool and the injector adapter harness to the injector.
Illustration 15 g06346868
Complete setup of nozzle tester and injector test kit
Once injector test kit and nozzle test group are set up, connect fuel line adaptor on the high-pressure hose assembly to the injector, leave connection loose. Actuate the lever on the nozzle test group until fuel drips from connection allowing air to purge from setup. Tighten fuel line adaptor at injector to (25 ft lbs).Injector Test Procedure
Illustration 16 g06346881
Mounted nozzle test group (close-up)
Inspect the injector for any leaks. Using the lever on the nozzle tester group, build injection fuel pressure to (5000 psi). Turn the locking valve to insure there is no leakage back through the tester.
Let the nozzle test
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Group cross 104749-1770 ZEXEL
Isuzu
104749-1770
8941286570
INJECTION-PUMP ASSEMBLY
4FC1J
4FC1J