106873-7750 ZEXEL INJECTION-PUMP ASSEMBLY Calibration Data


Information injection-pump assembly

ZEXEL 106873-7750 1068737750

Service parts 106873-7750 INJECTION-PUMP ASSEMBLY:

1. _
2. FUEL INJECTION PUMP 106080-7250
3. GOVERNOR 105923-3130
4. SUPPLY PUMP 105237-5010
5. AUTOM. ADVANCE MECHANIS 105691-3910
6. COUPLING PLATE 105664-2020
7. COUPLING PLATE
8. _
9. _
10. NOZZLE AND HOLDER ASSY 105110-7450
11. Nozzle and Holder ME093733
12. Open Pre:MPa(Kqf/cm2) 15.7{160}/21.6{220}
13. NOZZLE-HOLDER 105041-4120
14. NOZZLE
15. NOZZLE SET 105019-0620

Include in #1:

106873-7750 as INJECTION-PUMP ASSEMBLY

Cross reference number

ZEXEL 106873-7750 1068737750


Zexel num Bosch num Firm num Firm Name
106873-7750        INJECTION-PUMP ASSEMBLY

Calibration Data:



Adjustment conditions
Test oil   ISO4113 or {SAEJ967d}
1404 Test oil
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   20.7
Opening pressure kgf/cm2   211
Injection pipe mm   8-3-600
Outer diameter - inner diameter - length (mm)
Overflow valve   131425-0220
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   255 255 255
Tester oil delivery pressure kgf/cm2   2.6 2.6 2.6
Direction of rotation (viewed from drive side)   R
Right


Injection timing adjustment
Direction of rotation (viewed from drive side)   R
Right
Injection order   1-2-7-3- 4-5-6-8
Pre-stroke mm   3.9 3.85 3.95
Beginning of injection position   NO.1
Governor side
Difference between angles 1 deg.   45 44.5 45.5
Cyl.1-2
Difference between angles 2 deg.   90 89.5 90.5
Cal 1-7
Difference between angles 3 deg.   135 134.5 135.5
Cal 1-3
Difference between angles 4 deg.   180 179.5 180.5
Cal 1-4
Difference between angles 5 deg.   225 224.5 225.5
Cal 1-5
Difference between angles 6 deg.   270 269.5 270.5
Cal 1-6
Difference between angles 7 deg.   315 314.5 315.5
Cal 1-8


Injection quantity adjustment
Adjusting point   -
Rack position   11.5
Pump speed r/min   700 700 700
Each cylinder's injection qty mm3/st.   115 111.5 118.5
Basic   *
Fixing the rack   *
Standard for adjustment of the maximum variation between cylinders   *


Injection quantity adjustment_02
Adjusting point   Z
Rack position   8+-0.5
Pump speed r/min   430 430 430
Each cylinder's injection qty mm3/st.   19 16.1 21.9
Fixing the rack   *
Standard for adjustment of the maximum variation between cylinders   *


Injection quantity adjustment_03
Adjusting point   A
Rack position   R1(11.5)
Pump speed r/min   700 700 700
Average injection quantity mm3/st.   115 114 116
Basic   *
Fixing the lever   *


Injection quantity adjustment_04
Adjusting point   B
Rack position   R1+0.9
Pump speed r/min   1100 1100 1100
Average injection quantity mm3/st.   117 113 121
Fixing the lever   *


Injection quantity adjustment_05
Adjusting point   C
Rack position   R1-0.6
Pump speed r/min   500 500 500
Average injection quantity mm3/st.   111 107 115
Fixing the lever   *

Test data Ex:



Governor adjustment

Test data 106873-7750 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=AC74
----------



Timer adjustment

Test data 106873-7750 (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=(10deg) t1=2.5--sec. t2=2.5--sec.
----------
N1=750++r/min P1=0kPa(0kgf/cm2) P2=392kPa(4kgf/cm2) C1=10+-0.3deg R01=0/4load R02=4/4load



Speed control lever angle

Test data 106873-7750 F:Full speed I:Idle (1)Use the hole at R = aa (2)Stopper bolt set position 'H' (3)Viewed from feed pump side.
----------
aa=37.5mm
----------
a=32deg+-5deg b=(42deg)+-3deg



Stop lever angle

Test data 106873-7750 N:Pump normal S:Stop the pump. (1)Use the hole at R = aa (2)Set the stopper bolt so that speed = bb and rack position = cc. (Confirm non-injection.) (3)Normal engine position (Rack position corresponding to dd)
----------
aa=54mm bb=1100r/min cc=3+-0.3mm dd=17.5mm
----------
a=41deg+-5deg b=5.5deg+-5deg c=(31deg)



0000001501 RACK SENSOR

Test data 106873-7750 (VR) measurement voltage (I) Part number of the control unit (G) Apply red paint. (H): End surface of the pump 1. Rack sensor adjustment (-0620) (1)Fix the speed control lever at the full position (2)Set the speed to N1 r/min. (If the boost compensator is provided, apply boost pressure.) (3)Adjust the bobbin (A) so that the rack sensor's output voltage is VR+-0.01. (4)At that time, rack position must be Ra. (5)Apply G at two places. Connecting part between the joint (B) and the nut (F) Connecting part between the joint (B) and the end surface of the pump (H)
----------
N1=1100r/min Ra=R1(11.5)+0.9mm
----------



Timing setting

Test data 106873-7750 (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=4deg
----------
a=(50deg)





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