Information injection-pump assembly
ZEXEL
104304-4160
1043044160
ISUZU
8941421840
8941421840
Rating:
Cross reference number
ZEXEL
104304-4160
1043044160
ISUZU
8941421840
8941421840
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
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
2.1
2.05
2.15
Rack position
Point B R=B
Point B R=B
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
8.1
Pump speed
r/min
1300
1300
1300
Average injection quantity
mm3/st.
28
27.5
28.5
Max. variation between cylinders
%
0
-2.5
2.5
Basic
*
Fixing the lever
*
Injection quantity adjustment_02
Adjusting point
C
Rack position
7.1+-0.5
Pump speed
r/min
425
425
425
Average injection quantity
mm3/st.
8
7
9
Max. variation between cylinders
%
0
-14
14
Fixing the lever
*
Remarks
Adjust only variation between cylinders; adjust governor according to governor specifications.
Adjust only variation between cylinders; adjust governor according to governor specifications.
Injection quantity adjustment_03
Adjusting point
E
Rack position
-
Pump speed
r/min
1100
1100
1100
Average injection quantity
mm3/st.
28
27
29
Fixing the lever
*
Test data Ex:
Governor adjustment
N:Pump speed
R:Rack position (mm)
(1)Torque control stroke: L1
(2)Set the idle spring.
(3)Main spring setting
(4)Rack difference between N = N1 and N = N2
(5)Rack difference between N = N3 and N = N4
----------
L1=1.2mm N1=1300r/min N2=1000r/min N3=1300r/min N4=700r/min
----------
----------
L1=1.2mm N1=1300r/min N2=1000r/min N3=1300r/min N4=700r/min
----------
Speed control lever angle
F:Full speed
I:Idle
----------
----------
a=8deg+-3deg b=30deg+-6deg
----------
----------
a=8deg+-3deg b=30deg+-6deg
Timing setting
(1)Pump vertical direction
(2)Position of gear's standard threaded hole at No 1 cylinder's beginning of injection (same as key groove position)
(3)B.T.D.C.: aa
(4)-
----------
aa=17deg
----------
a=(50deg)
----------
aa=17deg
----------
a=(50deg)
Information:
20Oct2015
U-557
A-401
D-483
O-483
TM-15
TA-4
Parts stock action only
PRODUCT IMPROVEMENT PROGRAM FOR REMOVING CERTAIN 20R-0476 INJECTOR ASSEMBLIES FROM DEALER PARTS STOCK
7750 PI70592
Caterpillar’s obligations under this Service Letter are subject to, and shall not apply in contravention of, the laws, rules, regulations, directives, ordinances, orders, or statutes of the United States, or of any other applicable jurisdiction, without recourse or liability with respect to Caterpillar.
When submitting claim for Parts Stock Action, Use the appropriate 99Z as the s/n, the appropriate Service Letter Program Number as the Part number in the Part Causing Failure field, "7751" as the Group Number, "56" as the Description Code.
The information supplied in this service letter may not be valid after the termination date of this program.Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.
TERMINATION DATE
31Jan2016
PROBLEM
All 20R-0476 Injector Assemblies in dealer parts stock need to be inspected for the date code. 20R-0476 Injector Assemblies that have a date code of D08M07Y15P47 need to be removed from dealer parts stock. These injector as may have a nozzle assembly marked 2645K015 which is not correct. (Image1 = Incorrect) The correct nozzle assembly should be marked 2645K016. (Image2 = Correct) These two nozzles are not interchangeable.
ACTION REQUIRED
Inspect the date code on all 20R-0476 Injector Assemblies in dealer parts stock. 20R-0476 Injector Assemblies that have a date code of D08M07Y15P47 need to be removed from dealer parts stock.
Image1
Image2
SERVICE CLAIM ALLOWANCES
Submit one claim for all parts removed from dealer parts stock.
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.