Information injection-pump assembly
ZEXEL
101402-0790
1014020790
ISUZU
8944470490
8944470490
Rating:
Cross reference number
ZEXEL
101402-0790
1014020790
ISUZU
8944470490
8944470490
Zexel num
Bosch num
Firm num
Name
Calibration Data:
Adjustment conditions
Test oil
1404 Test oil ISO4113 or {SAEJ967d}
1404 Test oil ISO4113 or {SAEJ967d}
Test oil temperature
degC
40
40
45
Nozzle and nozzle holder
105780-8140
Bosch type code
EF8511/9A
Nozzle
105780-0000
Bosch type code
DN12SD12T
Nozzle holder
105780-2080
Bosch type code
EF8511/9
Opening pressure
MPa
17.2
Opening pressure
kgf/cm2
175
Injection pipe
Outer diameter - inner diameter - length (mm) mm 6-2-600
Outer diameter - inner diameter - length (mm) mm 6-2-600
Overflow valve opening pressure
kPa
157
123
191
Overflow valve opening pressure
kgf/cm2
1.6
1.25
1.95
Tester oil delivery pressure
kPa
157
157
157
Tester oil delivery pressure
kgf/cm2
1.6
1.6
1.6
Direction of rotation (viewed from drive side)
Right R
Right R
Injection timing adjustment
Direction of rotation (viewed from drive side)
Right R
Right R
Injection order
1-3-4-2
Pre-stroke
mm
3.6
3.55
3.65
Beginning of injection position
Drive side NO.1
Drive side NO.1
Difference between angles 1
Cal 1-3 deg. 90 89.5 90.5
Cal 1-3 deg. 90 89.5 90.5
Difference between angles 2
Cal 1-4 deg. 180 179.5 180.5
Cal 1-4 deg. 180 179.5 180.5
Difference between angles 3
Cyl.1-2 deg. 270 269.5 270.5
Cyl.1-2 deg. 270 269.5 270.5
Injection quantity adjustment
Adjusting point
A
Rack position
10
Pump speed
r/min
1150
1150
1150
Average injection quantity
mm3/st.
67.6
66.5
68.7
Max. variation between cylinders
%
0
-2
2
Basic
*
Fixing the rack
*
Injection quantity adjustment_02
Adjusting point
-
Rack position
7.6+-0.5
Pump speed
r/min
400
400
400
Average injection quantity
mm3/st.
10
8.6
11.4
Max. variation between cylinders
%
0
-14
14
Fixing the rack
*
Remarks
Adjust only variation between cylinders; adjust governor according to governor specifications.
Adjust only variation between cylinders; adjust governor according to governor specifications.
Test data Ex:
Governor adjustment
N:Pump speed
R:Rack position (mm)
(1)Target notch: K
(2)Set idle sub-spring
(3)Main spring setting
----------
K=5
----------
----------
K=5
----------
Speed control lever angle
F:Full speed
I:Idle
D:Dead point
(1)Stopper bolt setting
----------
----------
a=(3deg)+-5deg b=18deg+-3deg c=(20deg)+-5deg
----------
----------
a=(3deg)+-5deg b=18deg+-3deg c=(20deg)+-5deg
Stop lever angle
N:Pump normal
S:Stop the pump.
----------
----------
a=19deg+-5deg b=53deg+-5deg
----------
----------
a=19deg+-5deg b=53deg+-5deg
Timing setting
(1)Pump vertical direction
(2)Position of gear mark 'CC' at No 1 cylinder's beginning of injection
(3)B.T.D.C.: aa
(4)-
----------
aa=16deg
----------
a=(90deg)
----------
aa=16deg
----------
a=(90deg)
Information:
Introduction
The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.Problem
Some of the 3408E engines and 3412E engines in the above listed machines may experience hard starting or low power due to oil that is leaking past the poppet valve in the injector. The oil leakage is caused by the operating conditions at either low idle or high idle. Excessive oil leakage can reduce actuation pressure to the fuel injector. This may prevent fuel injection.Solution
Electrical shock hazard. The electronic unit injector system uses 90-120 volts.
Follow the proper troubleshooting procedure for the correct engine. If the problem is not located and the symptoms that are listed above continue, remove the engine valve covers. Electrically disable the injectors. Crank the engine. Watch the spill ports of the injector for oil leakage. A small amount of oil leakage is acceptable. A continuous stream of oil may mean leakage from the poppet valve. Excessive leakage from the poppet valve may prevent fuel injection.Note: Normal oil pressure during cranking should be 5 MPa (725 psi). Oil pressure below 5 MPa (725 psi) may indicate excessive oil leakage in injectors. Do not replace the oil pump. Service personnel should replace the injectors that have a continuous flow of oil from the oil ports. Injectors that have a continuous flow of oil and injectors that are within the guidelines of warranty can be returned. Injectors that do not have a continuous flow of oil should not be replaced. Injectors that do not have a continuous flow of oil should not be returned.Note: For additional information on the operation of Hydraulic Electronic Unit Injectors HEUI, refer to CD, RENR1390.
Illustration 1 g01308874
(1) Oil drain portThe oil drain ports are located underneath the solenoid. This will direct the oil flow downward. Some oil may also leak from the rectangular slots at the side of the solenoid. Excess oil leakage will still be visible on the cylinder head.
The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.Problem
Some of the 3408E engines and 3412E engines in the above listed machines may experience hard starting or low power due to oil that is leaking past the poppet valve in the injector. The oil leakage is caused by the operating conditions at either low idle or high idle. Excessive oil leakage can reduce actuation pressure to the fuel injector. This may prevent fuel injection.Solution
Electrical shock hazard. The electronic unit injector system uses 90-120 volts.
Follow the proper troubleshooting procedure for the correct engine. If the problem is not located and the symptoms that are listed above continue, remove the engine valve covers. Electrically disable the injectors. Crank the engine. Watch the spill ports of the injector for oil leakage. A small amount of oil leakage is acceptable. A continuous stream of oil may mean leakage from the poppet valve. Excessive leakage from the poppet valve may prevent fuel injection.Note: Normal oil pressure during cranking should be 5 MPa (725 psi). Oil pressure below 5 MPa (725 psi) may indicate excessive oil leakage in injectors. Do not replace the oil pump. Service personnel should replace the injectors that have a continuous flow of oil from the oil ports. Injectors that have a continuous flow of oil and injectors that are within the guidelines of warranty can be returned. Injectors that do not have a continuous flow of oil should not be replaced. Injectors that do not have a continuous flow of oil should not be returned.Note: For additional information on the operation of Hydraulic Electronic Unit Injectors HEUI, refer to CD, RENR1390.
Illustration 1 g01308874
(1) Oil drain portThe oil drain ports are located underneath the solenoid. This will direct the oil flow downward. Some oil may also leak from the rectangular slots at the side of the solenoid. Excess oil leakage will still be visible on the cylinder head.