Information injection-pump assembly
BOSCH
9 400 612 278
9400612278
ZEXEL
106676-2521
1066762521
Rating:
Service parts 106676-2521 INJECTION-PUMP ASSEMBLY:
1.
_
7.
COUPLING PLATE
8.
_
9.
_
11.
Nozzle and Holder
ME440089
12.
Open Pre:MPa(Kqf/cm2)
15.7{160}/21.6{220}
14.
NOZZLE
Include in #1:
106676-2521
as INJECTION-PUMP ASSEMBLY
Cross reference number
BOSCH
9 400 612 278
9400612278
ZEXEL
106676-2521
1066762521
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 8-3-600
Outer diameter - inner diameter - length (mm) mm 8-3-600
Overflow valve
131424-8020
Overflow valve opening pressure
kPa
255
221
289
Overflow valve opening pressure
kgf/cm2
2.6
2.25
2.95
Tester oil delivery pressure
kPa
157
157
157
Tester oil delivery pressure
kgf/cm2
1.6
1.6
1.6
RED4 control unit part number
407915-0
590
RED4 rack sensor specifications
mm
19
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
1-5-3-6-
2-4
Pre-stroke
mm
3.9
3.85
3.95
Beginning of injection position
Governor side NO.1
Governor side NO.1
Difference between angles 1
Cal 1-5 deg. 60 59.5 60.5
Cal 1-5 deg. 60 59.5 60.5
Difference between angles 2
Cal 1-3 deg. 120 119.5 120.5
Cal 1-3 deg. 120 119.5 120.5
Difference between angles 3
Cal 1-6 deg. 180 179.5 180.5
Cal 1-6 deg. 180 179.5 180.5
Difference between angles 4
Cyl.1-2 deg. 240 239.5 240.5
Cyl.1-2 deg. 240 239.5 240.5
Difference between angles 5
Cal 1-4 deg. 300 299.5 300.5
Cal 1-4 deg. 300 299.5 300.5
Injection quantity adjustment
Rack position
(13.4)
PWM
%
63.5
Pump speed
r/min
700
700
700
Average injection quantity
mm3/st.
178
175
181
Max. variation between cylinders
%
0
-2.5
2.5
Basic
*
Injection quantity adjustment_02
Rack position
(7.3)
PWM
%
29+-2.8
Pump speed
r/min
225
225
225
Average injection quantity
mm3/st.
8.5
7
10
Max. variation between cylinders
%
0
-15
15
Test data Ex:
Governor adjustment
(1)Adjusting range
(2)Step response time
(N): Speed of the pump
(L): Load
(theta) Advance angle
(Srd1) Step response time 1
(Srd2) Step response time 2
1. Adjusting conditions for the variable timer
(1)Adjust the clearance between the pickup and the protrusion to L.
----------
L=1.5-0.2mm N2=800r/min C2=(10)deg t1=2.5--sec. t2=2.5--sec.
----------
N1=750r/min P1=0kPa(0kgf/cm2) P2=392kPa(4kgf/cm2) C1=10+-0.3deg R01=0/4load R02=4/4load
----------
L=1.5-0.2mm N2=800r/min C2=(10)deg t1=2.5--sec. t2=2.5--sec.
----------
N1=750r/min P1=0kPa(0kgf/cm2) P2=392kPa(4kgf/cm2) C1=10+-0.3deg R01=0/4load R02=4/4load
Speed control lever angle
N:Pump normal
S:Stop the pump.
(1)Rack position = aa
(2)Rack position bb
----------
aa=20mm bb=1mm
----------
a=2deg+-5deg b=37deg+-5deg
----------
aa=20mm bb=1mm
----------
a=2deg+-5deg b=37deg+-5deg
0000000901
(1)Pump vertical direction
(2)Coupling's key groove position at No 1 cylinder's beginning of injection
(3)B.T.D.C.: aa
(4)-
----------
aa=10deg
----------
a=(2deg)
----------
aa=10deg
----------
a=(2deg)
Stop lever angle
(PWM) Pulse width modulation (%)
(R) Rack position (mm)
Rack sensor output characteristics
1. Rack limit adjustment
(1)Measure the rack position R2 for PWM a2%.
(2)Confirm that it is within the range R2 = 15+-1 mm.
(3)Measure the rack position R1 at PWM a %.
(4)Confirm that it is within the range R2 - R1 = 10+-0.1 mm.
2. Check the limp home operation.
(1)Move the switch box's limp home switch to the limp home side.
(2)Confirm rack position L1 (mm ) and L2 (mm) for PWM in the above table.
3. Check the pull down operation.
(1)Confirm that the rack position is 19 mm at PWM B%.
(2)In the conditions described in the above table, move the switch box's pull down switch to the pull down side and confirm that the rack position momentarily becomes 1 mm or less.
----------
a1=16.25% a2=72.5% L1=1--mm L2=19++mm A=5 % B=95%
----------
----------
a1=16.25% a2=72.5% L1=1--mm L2=19++mm A=5 % B=95%
----------
Information:
ACTION REQUIRED
Take the following actions after a failure occurs on one or more injectors in any of the engines in the Affected Product. A failure is considered extreme fuel dilution, in the range of 20 liters per minute.
- If one or more injectors fail it may be necessary to replace additional injectors at the time of repair.
- Verify the injector serial number of the failed injector. Verify the injector serial number of the remaining injectors in the engine. Refer to Image1 for an example of part number (A) and injector serial number identification (B). If the injector serial number falls within the range of 1134640-1234085, the injector should be replaced. The 154-6389 Buttons on the engine should also be replaced. The 154-6389 Button and 9F-7707 Retaining Clip on the injector rocker arms should also be replaced.
Only injectors falling within the range of 1134640-1234085 should be replaced and claimed under this program.
Refer to the Disassembly and Assembly manual for the removal/installation procedure of the unit injector and button.
Excessive fuel dilution of the engine oil requires changing the engine oil and filters. Refer to the appropriate Service Manual as necessary.
Image1
SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
*******Group 1*******
0-3000 hrs,
0-36 mo 100.0% 100.0% 0.0% 0.0% 0.0% 0.0%
This is a 2.6-hour job for Group 1
An additional 0.6 hours labor will be allowed per injector replaced due to inspection results.
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
*******Group 2*******
0-3000 hrs,
0-36 mo 100.0% 100.0% 0.0% 0.0% 0.0% 0.0%
This is a 2.6-hour job for Group 2
An additional 0.6 hours labor will be allowed per injector replaced due to inspection results.
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.