Information injection-pump assembly
ZEXEL
106871-1123
1068711123
ISUZU
1156029842
1156029842

Rating:
Service parts 106871-1123 INJECTION-PUMP ASSEMBLY:
1.
_
6.
COUPLING PLATE
7.
COUPLING PLATE
8.
_
9.
_
11.
Nozzle and Holder
1-15300-328-0
12.
Open Pre:MPa(Kqf/cm2)
15.7{160}/22.1{225}
15.
NOZZLE SET
Include in #1:
106871-1123
as INJECTION-PUMP ASSEMBLY
Cross reference number
ZEXEL
106871-1123
1068711123
ISUZU
1156029842
1156029842
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
105780-8250
Bosch type code
1 688 901 101
Nozzle
105780-0120
Bosch type code
1 688 901 990
Nozzle holder
105780-2190
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
134424-4320
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
255
255
255
Tester oil delivery pressure
kgf/cm2
2.6
2.6
2.6
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
1-8-7-3-
6-5-4-2
Pre-stroke
mm
5.5
5.47
5.53
Rack position
Point A R=A
Point A R=A
Beginning of injection position
Governor side NO.1
Governor side NO.1
Difference between angles 1
Cal 1-8 deg. 45 44.75 45.25
Cal 1-8 deg. 45 44.75 45.25
Difference between angles 2
Cal 1-7 deg. 90 89.75 90.25
Cal 1-7 deg. 90 89.75 90.25
Difference between angles 3
Cal 1-3 deg. 135 134.75 135.25
Cal 1-3 deg. 135 134.75 135.25
Difference between angles 4
Cal 1-6 deg. 180 179.75 180.25
Cal 1-6 deg. 180 179.75 180.25
Difference between angles 5
Cal 1-5 deg. 225 224.75 225.25
Cal 1-5 deg. 225 224.75 225.25
Difference between angles 6
Cal 1-4 deg. 270 269.75 270.25
Cal 1-4 deg. 270 269.75 270.25
Difference between angles 7
Cyl.1-2 deg. 315 314.75 315.25
Cyl.1-2 deg. 315 314.75 315.25
Injection quantity adjustment
Adjusting point
-
Rack position
10.3
Pump speed
r/min
700
700
700
Average injection quantity
mm3/st.
109
107.4
110.6
Max. variation between cylinders
%
0
-3
3
Basic
*
Fixing the rack
*
Standard for adjustment of the maximum variation between cylinders
*
Injection quantity adjustment_02
Adjusting point
Z
Rack position
6.5+-0.5
Pump speed
r/min
420
420
420
Average injection quantity
mm3/st.
13.5
11.5
15.5
Max. variation between cylinders
%
0
-13
13
Fixing the rack
*
Standard for adjustment of the maximum variation between cylinders
*
Injection quantity adjustment_03
Adjusting point
A
Rack position
R1(10.3)
Pump speed
r/min
700
700
700
Average injection quantity
mm3/st.
109
108
110
Basic
*
Fixing the lever
*
Injection quantity adjustment_04
Adjusting point
B
Rack position
R1+1.2
Pump speed
r/min
1150
1150
1150
Average injection quantity
mm3/st.
115
111
119
Fixing the lever
*
Test data Ex:
Governor adjustment

N:Pump speed
R:Rack position (mm)
(1)Torque cam stamping: T1
(2)Tolerance for racks not indicated: +-0.05mm.
(3)Damper spring setting
----------
T1=AC67
----------
----------
T1=AC67
----------
Timer 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=1-0.2mm N2=800r/min C2=(8)deg t1=1.5--sec. t2=1.5--sec.
----------
N1=950++r/min P1=0kPa(0kgf/cm2) P2=392kPa(4kgf/cm2) C1=8+-0.3deg R01=0/4load R02=4/4load
----------
L=1-0.2mm N2=800r/min C2=(8)deg t1=1.5--sec. t2=1.5--sec.
----------
N1=950++r/min P1=0kPa(0kgf/cm2) P2=392kPa(4kgf/cm2) C1=8+-0.3deg R01=0/4load R02=4/4load
Speed control lever angle

F:Full speed
(1)Use the pin at R = aa
(2)Stopper bolt set position 'H'
----------
aa=42.5mm
----------
a=20deg+-5deg b=33deg+-3deg
----------
aa=42.5mm
----------
a=20deg+-5deg b=33deg+-3deg
Stop lever angle

N:Pump normal
S:Stop the pump.
(1)Use the pin at R = aa
(2)Set the stopper bolt so that speed = bb and rack position = cc. (Confirm non-injection.)
----------
aa=37.5mm bb=0r/min cc=1.5+-0.3mm
----------
a=40deg+-5deg b=43deg+-5deg
----------
aa=37.5mm bb=0r/min cc=1.5+-0.3mm
----------
a=40deg+-5deg b=43deg+-5deg
0000001501 RACK SENSOR

Rack sensor adjustment
1. Flange type rack sensor (rack sensor adjustment -5*20)
(1)These types of rack sensors do not need adjustment. Confirm the performance with the following procedures.
(2)Mount the rack sensor main body to the pump main body.
(3)Fix the pump lever at full.
(4)At supply voltage V1, pump speed N1 and rack position Ra, confirm that the amp's output voltage is Vist.
(5)Move the pump lever two or three times.
(6)Set again to full.
(7)Confirm that the amplifier output voltage is Vist.
(8)Fix the caution plate to the upper part of the rack sensor.
(For those without the caution plate instructions, make sure the nameplate of the rack sensor carries the "Don't hold here" caution.)
(9)Apply red paint to the rack sensor mounting bolts (2 places).
----------
V1=5+-0.01V N1=1150r/min Ra=R1(10.3)+1.2mm Vist=1.65+-0.14V
----------
----------
V1=5+-0.01V N1=1150r/min Ra=R1(10.3)+1.2mm Vist=1.65+-0.14V
----------
Timing setting

(1)Pump vertical direction
(2)Position of "Z" mark at the No 1 cylinder's beginning of injection (governor side)
(3)B.T.D.C.: aa
(4)-
----------
aa=4deg
----------
a=(180deg)
----------
aa=4deg
----------
a=(180deg)
Information:
15Jun2015
(Revised 08Sep2015)
U-312
A-215
D-253
O-261
Parts stock action only
PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REMOVING CERTAIN 10R4761 AND 10R4763 REMAN INJECTORS FROM DEALER PARTS STOCK
7750 PI70569
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.
This Revised Service Letter replaces the 15Jun2015 (Revised 12Aug2015) Service Letter. Changes have been made to Action Required and Service Claim Allowance. A request for photographs to be submitted with the claims story has been added.
TERMINATION DATE
30Sep2015
PROBLEM
Certain reman fuel injectors were mislabeled with an incorrect part number.
ACTION REQUIRED
Inspect all 10R4761 and 10R4763 Reman Fuel Injectors in dealer parts stock.
If an injector has a 12-character serial number listed in the table in Image 1, remove the part from dealer parts stock. Refer to the Parts Disposition. Include the Injector Serial Number in the Claim Story. Also, attach a photograph of the injector serial number with the claim story.
If an injector does not have a 12-character serial number listed in the table in Image 1, mark the package to indicate that the part has been inspected according to this program and return the part to dealer parts stock.
Image 2 identifies Reman Hydraulic Electronic Unit Injector (HEUI) product markings.
(1) 7-character Part Number
(2) 12-character Serial Number
(3) 4-digit Confirmation Code
Image1
Image2
SERVICE CLAIM ALLOWANCES
Submit one claim for all parts removed from dealer parts stock. Include the Injector Serial Number(s) in the Claim Story. Also, attach a photograph of the injector serial number with the claim story.
PARTS DISPOSITION
NACD:
Hold all 10R4761 and 10R4763 Reman Fuel Injectors removed from dealer parts stock for a Parts Return Request (PRR). A Parts Return Request (PRR) will be issued to you through the Send-It-Back process after the claim is submitted. Make sure to list the service letter program number on the packing slip and include the closed work order paperwork.
EAME, LACD, and APD:
Hold all 10R4761 and 10R4763 Reman Fuel Injectors removed from dealer parts stock for 30 days for a possible Parts Return Request (PRR). Make sure to list the service letter program number on the packing slip and include the closed work order paperwork.
Contact Runge_Mark_H at Reman Product Support for a Parts Return Request (PRR).
If a Parts Return Request (PRR) is not issued to you after 30 days through the Send-It-Back process, handle the parts in accordance with your warranty bulletin on warranty parts handling.